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1.
Vestn Oftalmol ; 140(2): 40-46, 2024.
Article in Russian | MEDLINE | ID: mdl-38742497

ABSTRACT

Extended depth of focus (EDOF) intraocular lenses (IOLs) are the latest IOL designs. In recent years, several models of EDOF IOLs have become available in Russia, two of which (Tecnis Symfony and Acrysof IQ Vivity) are implanted in our clinic. Comparative studies devoted to the results of implantation of the new EDOF IOLs are rare in the available literature. PURPOSE: This article compares the outcomes of implantation of two EDOF IOLs in patients with presbyopia and/or cataract. MATERIAL AND METHODS: The prospective study included 60 patients (81 eyes) after implantation of EDOF IOL Tecnis Symfony (32 patients, 45 eyes; group 1) or EDOF IOL AcrySof IQ Vivity (28 patients, 36 eyes; group 2). The mean follow-up period was 3.9±1.3 months. RESULTS: All groups showed a significant (p<0.05) increase in uncorrected near visual acuity (UCNVA), intermediate visual acuity (UCIVA), and distance visual acuity (UCDVA) at the maximum follow-up time compared to preoperative values. In group 1, the best corrected near visual acuity (BCNVA) increased from 0.61±0.10 to 0.82±0.16 at the maximum follow-up time, and in group 2 - from 0.58±0.08 to 0.67±0.12 (p>0.05). Both groups showed a significant increase in best corrected intermediate and distance visual acuity (BCIVA and BCDVA) at the maximum follow-up time. The increase in the indicator compared to the preoperative period was not significant in both groups (p>0.05). The frequency of side optical phenomena was low in both groups. No significant differences were found between the groups (p>0.05). CONCLUSION: This study presents a comparative analysis of the results of implantation of two different EDOF IOLs. Both lenses were comparable in most of the studied parameters, including providing good distance and intermediate vision, functional near vision, as well as a low frequency of side optical phenomena. In all cases the patients were satisfied with the results of the surgical intervention.


Subject(s)
Lens Implantation, Intraocular , Lenses, Intraocular , Presbyopia , Visual Acuity , Humans , Male , Female , Lens Implantation, Intraocular/methods , Middle Aged , Presbyopia/surgery , Presbyopia/physiopathology , Prosthesis Design , Prospective Studies , Aged , Treatment Outcome , Cataract/physiopathology , Cataract/diagnosis , Refraction, Ocular/physiology , Depth Perception/physiology , Russia
3.
Turk J Ophthalmol ; 54(2): 63-68, 2024 Apr 19.
Article in English | MEDLINE | ID: mdl-38644781

ABSTRACT

Objectives: To evaluate the clinical results of a new trifocal intraocular lens (IOL) with sinusoidal design by comparing with a traditional trifocal IOL. Materials and Methods: A total of 79 patients undergoing uneventful microincisional cataract surgery with bilateral implantation of one of two types of trifocal IOLs, the Acriva Trinova IOL (VSY) or Acrysof IQ PanOptix IOL (Alcon), were enrolled in this prospective study. Visual and refractive outcomes, contrast sensitivity (CS), and defocus curve were assessed at 3 months after surgery. Patient satisfaction and incidence of photic phenomena were also evaluated. Results: The number of patients/eyes were 48/96 in the Trinova group and 31/62 in the PanOptix group. There were no significant differences between the groups for monocular and binocular corrected/uncorrected distance or intermediate (at 60 cm) and near visual acuities (VA) postoperatively. The Trinova group had statistically significantly better intermediate VA at 80 cm than the PanOptix group (p<0.05). The CS results of both groups were within the normal limits. In the binocular defocus curve of both IOLs, we observed a peak of good VA at 0.0 diopters defocus and a useful wide range for intermediate distances. The incidence of photic phenomena in the Trinova group was lower at postoperative 1 month (p<0.05) but this difference disappeared at 3 months. A total of 47 patients (97.9%) in the Trinova group and 30 patients (96.7%) in the PanOptix group stated that they would recommend the same IOL. Conclusion: Both trifocal IOLs provide good visual quality outcomes and patient satisfaction.


Subject(s)
Multifocal Intraocular Lenses , Presbyopia , Prosthesis Design , Refraction, Ocular , Visual Acuity , Humans , Prospective Studies , Female , Male , Visual Acuity/physiology , Aged , Middle Aged , Presbyopia/physiopathology , Presbyopia/surgery , Refraction, Ocular/physiology , Vision, Binocular/physiology , Patient Satisfaction , Contrast Sensitivity/physiology , Phacoemulsification , Follow-Up Studies , Lens Implantation, Intraocular/methods , Lenses, Intraocular
4.
Klin Monbl Augenheilkd ; 241(4): 540-544, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38653312

ABSTRACT

BACKGROUND: Performance and symptoms in completing a visual search task on a PC monitor and using a head-mounted display (HMD) were compared for different viewing conditions and between users of different ages. PATIENTS AND METHODS: Twenty-three young (M = 30 y, SD = 7 y) and 23 older (M = 52 y, SD = 5 y) participants performed a visual search task presented on a PC monitor. The task was repeated using an HMD for a near and a far virtual viewing distance. Reaction times (RT), detection sensitivity (d'), and symptoms were recorded for the three different viewing conditions. RESULTS: RT and d' were not affected by the viewing condition (p > 0.05). In contrast, symptoms significantly depended on the viewing condition but were, in part, not significantly affected by age. It is interesting to note that although not significant, young participants reported more ocular symptoms than older participants in the near vision task carried out using the HMD. DISCUSSION: HMD increases visual symptoms. However, HMD could be, in part, a remedy to problems when using visual aids for near work, in particular for presbyopes.


Subject(s)
Accommodation, Ocular , Presbyopia , Virtual Reality , Humans , Presbyopia/physiopathology , Presbyopia/therapy , Male , Female , Adult , Middle Aged , Accommodation, Ocular/physiology , Convergence, Ocular/physiology , Young Adult , Reaction Time/physiology
5.
Ophthalmic Physiol Opt ; 44(4): 774-786, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38578134

ABSTRACT

PURPOSE: To investigate gaze and behavioural metrics at different viewing distances with multifocal contact lenses (MFCLs), single vision contact lenses (SVCLs) and progressive addition lenses (PALs). METHODS: Fifteen presbyopic contact lens wearers participated over five separate study visits. At each visit, participants were randomly assigned to wear one of five refractive corrections: habitual PAL spectacles, delefilcon A (Alcon Inc.) MFCLs and three separate pairs of delefilcon A single vision lenses worn as distance, intermediate and near corrections. Participants wore a Pupil Core headset to record eye and head movements while performing three visual tasks: reading, visual search and scene observation. Data were investigated using linear regression and post-hoc testing. Parameters of interest included gaze (fixation duration, head movement) and behavioural (reading speed, reading accuracy, visual search time) metrics. RESULTS: Reading speed in SVCLs was significantly faster than in MFCLs and PAL spectacles (F = 16.3, p < 0.0001). Refractive correction worn did not influence visual search times (F = 0.16, p = 0.85). Fixation duration was significantly affected by the type of visual task (F = 60.2, p < 0.001), and an interaction effect was observed between viewing distance and refractive correction (F = 4.3, p = 0.002). There was significantly more horizontal and vertical head movement (F = 3.2, p = 0.01 and F = 3.3, p = 0.01, respectively) during visual search tasks when wearing PAL spectacles compared to SVCLs or MFCLs. CONCLUSION: This work showed that the type of refractive correction affects behavioural metrics such as reading speed and gaze behaviour by affecting horizontal and vertical head movements. The findings of this study suggest that under certain conditions, wearers of MFCLs make fewer head movements compared to PAL spectacles. Gaze behaviour metrics offer a new approach to compare and understand contact lens and spectacle performance, with potential applications including peripheral optical designs for myopia management.


Subject(s)
Contact Lenses , Eyeglasses , Fixation, Ocular , Presbyopia , Reading , Refraction, Ocular , Visual Acuity , Adult , Female , Humans , Male , Middle Aged , Eye Movements/physiology , Fixation, Ocular/physiology , Head Movements/physiology , Presbyopia/physiopathology , Presbyopia/therapy , Refraction, Ocular/physiology , Visual Acuity/physiology , Cross-Over Studies , Prospective Studies
6.
Cont Lens Anterior Eye ; 47(3): 102137, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38485618

ABSTRACT

A common non-spectacle strategy to correct presbyopia is to provide simultaneous images with multifocal optical designs. Understanding the neuroadaptation mechanisms behind multifocal devices usage would have important clinical implications, such as predicting whether patients will be able to tolerate multifocal optics. The aim of this study was to evaluate the brain correlates during the initial wear of multifocal contact lenses (CLs) using high-density visual evoked potential (VEP) measures. Fifteen presbyopes (mean age 51.8 ±â€¯2.6 years) who had previously not used multifocal CLs were enrolled. VEP measures were achieved while participants looked at arrays of 0.5 logMAR Sloan letters in three different optical conditions arranged with CLs: monofocal condition with the optical power appropriate for the distance viewing; multifocal correction with medium addition; and multifocal correction with low addition. An ANOVA for repeated measures showed that the amplitude of the C1 and N1 components significantly dropped with both multifocal low and medium addition CL conditions compared to monofocal CLs. The P1 and P2 components showed opposite behavior with an increase in amplitudes for multifocal compared to monofocal conditions. VEP data indicated that multifocal presbyopia corrections produce a loss of feedforward activity in the primary visual cortex that is compensated by extra feedback activity in extrastriate areas only, in both early and late visual processing.


Subject(s)
Contact Lenses , Evoked Potentials, Visual , Presbyopia , Visual Cortex , Humans , Presbyopia/physiopathology , Presbyopia/therapy , Male , Visual Cortex/physiopathology , Middle Aged , Female , Evoked Potentials, Visual/physiology , Visual Acuity/physiology
7.
J Cataract Refract Surg ; 50(6): 578-584, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38305420

ABSTRACT

PURPOSE: To evaluate subjective and objective outcomes after combined implantation of an extended depth-of-focus (EDOF) intraocular lens (IOL) and a combined technology multifocal lens (CT-IOL). SETTING: 2 clinical practices (Carolina Eyecare Physicians, Center For Sight) in the United States. DESIGN: Prospective, unmasked, multicenter, nonrandomized bilateral eye study. METHODS: Patients interested in reducing their dependence on spectacles were implanted with an EDOF IOL in the dominant eye and a CT-IOL in the nondominant eye. Refractive and visual acuity (VA) data at various distances (4 m, 66 cm, 40 cm, and 33 cm) were collected 3 months postsurgery, along with the distance-corrected binocular defocus curve and responses to questionnaires related to spectacle independence, visual disturbances, and overall visual function. RESULTS: Data from 37 participants were analyzed. The distance-corrected binocular defocus curve showed a mean VA better than 0.1 logMAR (20/25) at all vergences from +1.00 to -2.50 diopters (D). 36 participants (97%) had an uncorrected binocular VA of 0.3 logMAR or better, at all test distances. 70% of participants (26/37) reported never wearing spectacles at any distance, and 84% (31/37) were "completely" or "mostly" satisfied with their overall vision after surgery. Halos were the disturbance reported most frequently and reported as most bothersome, with difficulty driving at night the most common visual function issue. Difficulty reading was the next most reported issue. Overall eyesight was rated as "excellent" or "good" by 92% (34/37) of participants. CONCLUSIONS: This combined EDOF/CT-IOL approach was well-tolerated by participants and provided some potential benefits relative to bilateral implantation of either lens.


Subject(s)
Lens Implantation, Intraocular , Phacoemulsification , Presbyopia , Pseudophakia , Refraction, Ocular , Vision, Binocular , Visual Acuity , Humans , Prospective Studies , Visual Acuity/physiology , Presbyopia/physiopathology , Presbyopia/surgery , Vision, Binocular/physiology , Male , Female , Middle Aged , Aged , Refraction, Ocular/physiology , Pseudophakia/physiopathology , Patient Satisfaction , Lenses, Intraocular , Surveys and Questionnaires , Multifocal Intraocular Lenses , Dominance, Ocular/physiology , Depth Perception/physiology , Prosthesis Design
9.
Curr Opin Ophthalmol ; 32(4): 319-323, 2021 07 01.
Article in English | MEDLINE | ID: mdl-33973905

ABSTRACT

PURPOSE OF REVIEW: Presbyopia is the normal progressive loss of accommodation, which leads to the inability to focus clearly on objects located at different distances. Some of the accepted methods for treating this condition are glasses, contact lenses, and surgery. Pharmacological treatments are a new and promising noninvasive option for dealing with presbyopia. The aim of this review is to provide an update on some recent advances in this field. RECENT FINDINGS: Currently, there are three different strategies for the pharmacological treatment of presbyopia. The first one aims to produce miosis and increase depth of focus through a pinhole effect, therefore improving uncorrected near visual acuity. The second one tries to restore the elasticity the lens has lost due to aging. Finally, the third strategy is based on rehabilitating accommodation; which is to say, in a binocular way, allowing for good vision at all distances. SUMMARY: Pharmacological treatments are a new alternative that expands the diversity of existing strategies for treating presbyopia. These treatments are based on the instillation of eyedrops with different compositions, which vary according to the different strategies. Many of these developments will most likely be on the market in the next few years. If the process of patient selection is done properly, any one of these three strategies can be used successfully.


Subject(s)
Accommodation, Ocular/drug effects , Ophthalmic Solutions/administration & dosage , Practice Guidelines as Topic , Presbyopia/drug therapy , Visual Acuity , Humans , Presbyopia/physiopathology
10.
PLoS One ; 16(4): e0250087, 2021.
Article in English | MEDLINE | ID: mdl-33891599

ABSTRACT

PURPOSE: The aim of this study was to explore the status of quality of life between the ages 40-59 in relation to presbyopia and dry eye. METHODS: Near add power and preferred contact lens power were examined in 219 participants at three clinics. 2000 participants completed a web-based survey on presbyopic symptoms, symptomatic dry eye, sleep quality, and subjective happiness. RESULTS: Mean preferred corrected visual acuity was less than 20/20 in women (vs men, P<0.01) who were more often prescribed under-corrected contact lenses, whereas men preferred full correction. According to the annual progression rate of near add power in men (0.1468D/year), the estimated difference in presbyopia progression between men and women was 0.75 years in the right eye, and 1.69 years in the left eye, implying men might suffer presbyopia earlier than women due to higher myopic power of daily use contact lenses. The web-based survey revealed that men reported lower subjective happiness than women (P<0.001) and earlier onset of presbyopic symptoms by 1.1-1.7 years (P<0.05). Men received their first reading glasses 0.8 years earlier than women (P = 0.066). Multiple regression analysis demonstrated that awareness of presbyopic symptoms, visual burden, and dry eyes were significantly correlated with poor sleep quality and subjective happiness. CONCLUSION: Presbyopia and dry eye were significantly associated with sleep quality and subjective happiness in middle-adulthood.


Subject(s)
Dry Eye Syndromes/psychology , Happiness , Presbyopia/psychology , Quality of Life/psychology , Sleep/physiology , Adult , Cross-Sectional Studies , Dry Eye Syndromes/physiopathology , Female , Health Surveys , Humans , Male , Middle Aged , Presbyopia/physiopathology , Retrospective Studies , Sex Factors
11.
Am J Ophthalmol ; 227: 240-244, 2021 07.
Article in English | MEDLINE | ID: mdl-33823159

ABSTRACT

PURPOSE: Multifocal intraocular lenses (MIOLs) are effective in treating presbyopia before cataracts develop. This study measured health-related quality of life (HRQoL) and vision-related quality of life (VRQoL) after clear lens extraction (CLE) and MIOL implantation. DESIGN: Before-and-after study METHODS: Patients were treated in Medilaser Coronaria, CorGroup, Oulu, Finland. HRQoL was measured by a generic 15-dimension (15D) instrument. VRQoL was measured with Visual Function Index-14 (VF-14) questionnaire. RESULTS: CLE and MIOL implantation was performed in 137 patients. The patient age was 57 ± 6.2 years (mean ± standard deviation), and 58% were women. The near add was 2.1±0.3 diopters (D). The overall HRQoL 15D score increased from 0.938±0.058 to 0.955±0.057 at 6 months (P < .0001 vs baseline) and to 0.948±0.060 at 1 year (P = .02 vs baseline). The VRQoL VF14 score increased from 85.32±15.57 to 96.57±5.07 at 6 months (P < .0001 vs baseline) and to 96.61±6.48 at 1 year (P < .0001 vs baseline). The increase of HRQoL was correlated with the increase of VRQoL (P < .04). CONCLUSIONS: CLE and MIOL implantation improved HRQoL and VRQoL compared to spectacles in this 1-year follow-up study. Improvement of HRQoL was correlated with VRQoL.


Subject(s)
Lens Implantation, Intraocular , Lens, Crystalline/surgery , Multifocal Intraocular Lenses , Phacoemulsification , Presbyopia/surgery , Quality of Life/psychology , Vision, Ocular/physiology , Female , Follow-Up Studies , Humans , Male , Middle Aged , Presbyopia/physiopathology , Presbyopia/psychology , Prospective Studies , Pseudophakia/physiopathology , Surveys and Questionnaires , Treatment Outcome , Visual Acuity/physiology
12.
Ophthalmology ; 128(10): 1469-1482, 2021 10.
Article in English | MEDLINE | ID: mdl-33741376

ABSTRACT

PURPOSE: To review the published literature assessing the efficacy and safety of presbyopia-correcting intraocular lenses (IOLs) for the treatment of presbyopia after cataract removal. METHODS: Literature searches were undertaken in January 2018 and September 2020 in the PubMed, Medline, and Cochrane Library databases. This yielded 761 articles, of which 34 met the criteria for inclusion in this assessment and were assigned a level of evidence rating by the panel methodologist. Thirteen studies were rated level I and 21 studies were rated level II. RESULTS: Presbyopia-correcting lenses were effective at improving distance and near visual acuity after cataract surgery. Near acuity at different focal lengths was related directly to the effective add power of multifocal and extended depth-of-focus (EDOF) IOLs. Most multifocal and EDOF lenses that were compared with a control monofocal lens demonstrated that patient-reported spectacle independence was superior to the monofocal lens. All patients who had multifocal and EDOF lenses implanted showed decreased contrast sensitivity and reported more visual phenomena as compared with control participants who received monofocal lenses. CONCLUSIONS: Presbyopia-correcting lenses improve uncorrected near and distance visual acuity and decrease spectacle dependence after cataract surgery. Mesopic contrast sensitivity is decreased compared with monofocal lenses, and patient-reported visual phenomena are more likely in patients receiving multifocal or EDOF lenses.


Subject(s)
Academies and Institutes , Accommodation, Ocular/physiology , Lens Implantation, Intraocular/methods , Multifocal Intraocular Lenses , Ophthalmology , Presbyopia/surgery , Refraction, Ocular/physiology , Depth Perception , Humans , Patient Satisfaction , Presbyopia/physiopathology , Prosthesis Design , United States , Visual Acuity
13.
Exp Eye Res ; 205: 108474, 2021 04.
Article in English | MEDLINE | ID: mdl-33524364

ABSTRACT

Presbyopia is a growing problem in view of an aging global population and increasingly patients desire spectacle-free solutions to address this condition. Surgically implanted corneal inlays have been the topic of renewed research efforts in the past several years as a treatment option for presbyopia, with several approaches being used to modify the refractive properties of the cornea and enhance near vision. In this review we discuss historical approaches to corneal inlay surgery, critically appraise the current generation of presbyopia-correcting corneal inlays and their associated complications and consider the future prospects for emerging corneal inlay technologies that aim address the shortcomings of currently available inlays.


Subject(s)
Corneal Stroma/surgery , Presbyopia/surgery , Prostheses and Implants , Aging/physiology , Humans , Presbyopia/physiopathology , Prosthesis Implantation , Refraction, Ocular/physiology , Visual Acuity/physiology
14.
Curr Eye Res ; 46(8): 1240-1246, 2021 08.
Article in English | MEDLINE | ID: mdl-33406917

ABSTRACT

PURPOSE: To analyze and characterize the pattern of visual working distance (WD) and mobile phone usage distance (MPD) in a large population, analyzing the differences in these parameters according to the job profile. METHODS: Cross-sectional study consisting of a screening campaign evaluating the visual status of professionals from seven different environments. A total of 454 participants with a mean age of 41.5 years (range, 22-64 years) were revised. The screening campaign consisted of several rapid tests performed in a single session in the usual work environment of each participant, including measurement of WD, arm length, and MPD (VisionApp, VisionApp Solutions S.L.). RESULTS: WD was significantly longer than MPD (82.5 ± 150.6 vs. 31.9 ± 6.3 cm, p < .001), whereas no significant differences were found between arm length (74.3 ± 4.8 cm) and WD (p = .493). WD was below 80 cm in 89.6% (407/454) of participants, whereas MPD was below 40 cm in 89.0% (404/454). No significant correlation was found between WD and MPD (r = 0.126, p = .117). Statistically significant differences were detected among job profile subgroups in WD (p < .001), with military personnel showing significantly longer WD than other professionals (p ≤ 0.018). Significant differences were also found between job profile subgroups in MPD (p = .006), with shorter MPDs for shoe factory professionals compared to sellers (p = .046). CONCLUSIONS: WD and MPD vary significantly among individuals, but always showing a shorter MPD. WD varies significantly also according to the job profile, being necessary to consider this information when selecting the most optimal optical aid in each case, especially for the compensation of presbyopia.


Subject(s)
Cell Phone/statistics & numerical data , Lens Implantation, Intraocular , Occupations , Phacoemulsification , Presbyopia/surgery , Pseudophakia/physiopathology , Vision, Ocular/physiology , Adult , Cross-Sectional Studies , Female , Humans , Lenses, Intraocular , Male , Middle Aged , Multifocal Intraocular Lenses , Presbyopia/physiopathology , Work , Young Adult
15.
Optom Vis Sci ; 98(1): 73-80, 2021 01 01.
Article in English | MEDLINE | ID: mdl-33394934

ABSTRACT

SIGNIFICANCE: Image simulation is a useful and efficient tool to explore the impact of defocus and astigmatism combinations on visual acuity and image quality score when accommodation is taken into account. PURPOSE: The goal of this experiment was to determine if a simulation is able to predict visual acuity and image quality score (IQS) with defocus and astigmatism combinations in presbyopes. METHODS: We measured visual acuity and IQS in five defocus and astigmatism combinations in either real or simulated conditions. In real conditions, the subjects viewed a stimulus through an ophthalmic lens or a deformable mirror. In simulated conditions, subjects viewed images of the same stimulus with simulated blur. The amounts of defocus and astigmatism combinations of a progressive addition lens in near vision were generated through a static correction of the subject's aberrations. We simulated three levels of accommodation: subject could not accommodate (FOC0), subject could accommodate to the less hyperopic focal point (FOC1), or subject could accommodate to the circle of least confusion (FOC2). RESULTS: Visual acuity or IQS did not differ between mirror and progressive addition lens conditions. Visual acuity measured in real blur conditions differed significantly from that in FOC0 simulated blur condition but were similar to that in FOC1 and FOC2 simulated blur conditions. Image quality score obtained in real conditions were between scores measured with the FOC0 and FOC1 simulated conditions, suggesting that the subjects were able to produce a low level of accommodation. CONCLUSIONS: Accommodation may play a role when comparing optical and simulated defocus and astigmatism combinations. Presbyopic subjects are able to produce a low level of accommodation that may counterbalance a part of the deleterious effect of the astigmatism on image quality. Simulation remains a useful tool if the correct accommodation state is taken into account.


Subject(s)
Astigmatism/physiopathology , Presbyopia/physiopathology , Refractive Errors/physiopathology , Accommodation, Ocular/physiology , Astigmatism/therapy , Computer Simulation , Eyeglasses , Female , Humans , Male , Middle Aged , Presbyopia/therapy , Refractive Errors/therapy , Visual Acuity/physiology
16.
Ophthalmic Physiol Opt ; 41(1): 73-83, 2021 01.
Article in English | MEDLINE | ID: mdl-33150654

ABSTRACT

PURPOSE: To examine the pupil and visual impact of a single early morning drop of a low concentration miotic. METHODS: Pupil size, refraction, visual acuity (VA), near reading performance and intraocular pressure were monitored for 8 h at a wide range of light levels following bilateral instillation of single drops of 0.1% brimonidine tartate in 19 early presbyopes (40-50 years) and 11 mature presbyopes (>50 years). RESULTS: Pupil miosis did not alter distance VA or refraction. Significant pupil miosis peaked at 1-2 h after dosing, which expanded the depth of focus of mature presbyopes with the mean improvement in near logMAR VA of -0.15, -0.07 and -0.03, at 20, 200 and 2000 lux, respectively. One hour after instillation, near reading speed improved by 21, 24 and 5 words per min for text size commonly seen in US newspaper and cellphone text messages, 18, 21 and 19 words per min for text size of grocery labels and 12, 13 and 30 words per min for text size of over-the-counter medications at light levels of 20, 200 and 2000 lux, respectively. No such improvements in near VA and near reading speed were observed in the young presbyopes having some residual accommodation. Most of the pupil miosis remained 8 h after instillation, whereas near VA improvements disappeared after 4 h. CONCLUSION: Low dose miotics can enhance near vision in presbyopic subjects while retaining high quality distance vision over a wide range of light levels. Significant improvements in near vision were observed only during the 1-2 h period after dosing when miosis peaked.


Subject(s)
Accommodation, Ocular/drug effects , Adrenergic alpha-2 Receptor Agonists/administration & dosage , Brimonidine Tartrate/administration & dosage , Presbyopia/physiopathology , Pupil/drug effects , Refraction, Ocular/drug effects , Adult , Female , Humans , Intraocular Pressure/drug effects , Male , Middle Aged , Reading , Time Factors , Visual Acuity/drug effects
17.
Am J Ophthalmol ; 223: 53-59, 2021 03.
Article in English | MEDLINE | ID: mdl-33039375

ABSTRACT

PURPOSE: To compare visual outcomes and patient satisfaction between unilateral and bilateral trifocal diffractive intraocular lens (IOL) implantation in emmetropic patients with presbyopia. DESIGN: Retrospective observational case series. METHODS: This is a multicenter, multisurgeon study of emmetropic presbyopes who underwent refractive lens exchange (RLE) followed by an implantation of FineVision IOL (PhysIOL). Inclusion criteria were emmetropic eyes, with a sphere between -0.25 and +0.50 diopters (D), cylinder of less than 0.75 D and spherical equivalent (SE) between -0.25 and +0.25 D. In addition, uncorrected distance visual acuity (UDVA) had to be Snellen >0.9 in each eye. A total of 171 eyes of 122 patients were evaluated. This sample was divided into 2 groups depending on whether they have been operated monocularly or binocularly. Visual and refractive performance, patient satisfaction, and spectacle independence were evaluated. RESULTS: UDVA and corrected distance visual acuity (CDVA) remained almost unchanged after monocular and binocular surgery. Binocular uncorrected intermediate (UIVA) and near visual acuity (UNVA) were better in those operated binocularly (0.3±0.12 vs 0.22±0.06, P < .063, and 0.09±0.08 vs 0.04±0.05, P < .027, respectively). Predictability and efficacy were higher in the binocular group, whereas safety was better in the monocular group. Visual dysphotopsia was worse and spectacle independence for all distances was higher in binocular group. CONCLUSIONS: Our research shows that RLE with binocular implantation of a trifocal diffractive IOL in presbyopic emmetropic patients is more successful in UNVA than monocular implantation. However, no significant differences were observed in UDVA, UIVA, and patient satisfaction.


Subject(s)
Emmetropia/physiology , Lens Implantation, Intraocular , Multifocal Intraocular Lenses , Patient Satisfaction/statistics & numerical data , Presbyopia/surgery , Visual Acuity/physiology , Female , Follow-Up Studies , Humans , Male , Middle Aged , Presbyopia/physiopathology , Reoperation , Retrospective Studies , Surveys and Questionnaires , Vision, Binocular/physiology
18.
Ophthalmology ; 128(2): 188-196, 2021 02.
Article in English | MEDLINE | ID: mdl-32652205

ABSTRACT

PURPOSE: To assess the influence of distance and near visual impairment on self-reported near visual functioning (VF) in a multinational study. DESIGN: Population-based cross-sectional study. PARTICIPANTS: Participants aged 35 years or older were selected randomly with cluster sampling at 7 sites: rural sites in Nepal (Kaski) and India (Madurai), a semirural site in China (Shunyi), semiurban sites in South Africa (Durban) and Niger (Dosso), and urban sites in the United States (Los Angeles) and China (Guangzhou). METHODS: Binocular presenting distance and near visual acuity (VA) were measured with a logarithm of the minimum angle of resolution tumbling E chart at 4 m and 40 cm, respectively. A 12-item near VF questionnaire interview was administered by trained local interviewers, with responses scored from 100 to 0 as visual disability increased. Multiple linear regression was used to investigate the association of age, gender, education, and VA with overall eyesight, difficulty with activities, and social functioning subscale scores. MAIN OUTCOME MEASURES: Visual functioning subscale scores. RESULTS: The study sample consisted of 6851 questionnaire respondents. The VF subscale scores decreased significantly with worse distance and near VA, and even mildly impaired VA could result in reduced VF. Lower VF subscale scores were associated with older age at 4 sites, female gender at 3 sites, and greater education at 2 sites. The influence of near VA was greater than distance VA at 3 sites, and at 1 site, distance VA was more influential than near VA. With study site included in the regression modeling, lower scores for the overall eyesight subscale (compared with the Shunyi reference site) were found in Guangzhou, Kaski, and Durban; lower difficulty in activities scores were found in Kaski and Durban, but better scores were found in Guangzhou and Madurai; and social functioning scores were lower in Kaski, Durban, and Dosso. CONCLUSIONS: Along the entire VA spectrum, lower levels of distance and near VA led to significant reductions in VF subscale scores, with wide variation both within and between study sites. The impact of near vision on VF should receive greater emphasis with further investigation in various socioeconomic and cultural settings.


Subject(s)
Vision Disorders/ethnology , Vision Disorders/physiopathology , Visual Acuity/physiology , Visually Impaired Persons/statistics & numerical data , Adult , Age Distribution , Aged , Aged, 80 and over , Cross-Sectional Studies , Female , Global Health , Humans , Internationality , Male , Middle Aged , Presbyopia/ethnology , Presbyopia/physiopathology , Rural Population/statistics & numerical data , Self Report , Sex Distribution , Surveys and Questionnaires , Urban Population/statistics & numerical data , Vision, Binocular/physiology
19.
Curr Opin Ophthalmol ; 32(1): 45-53, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33122489

ABSTRACT

PURPOSE OF REVIEW: Corneal refractive surgery has achieved spectacle-free vision for millions of patients, but this aging population is now developing cataracts. Many of these patients may wish to avoid reliance on glasses after cataract surgery. Presbyopia-correcting intraocular lenses (IOLs) offer a solution, but corneal changes after refractive surgery may compound higher order aberrations and dysphotopic symptoms associated with these IOLs. This review aims to discuss potential factors that could aid in determining suitable postkeratorefractive candidates for presbyopia-correcting IOLs. RECENT FINDINGS: Studies investigating which preoperative measures influence outcomes are lacking. The few studies that have examined presbyopia-correcting IOLs in postkeratorefractive patients report that satisfactory outcomes are possible. However, recommendations for preoperative thresholds appear limited to expert opinion and studies involving virgin corneas. SUMMARY: As the number of presbyopia-correcting IOLs and postkeratorefractive patients grows, continued investigation into relevant preoperative factors and appropriate IOLs is required to make evidence-based decisions. The current literature shows that with rigorous counseling and appropriate patient selection, presbyopia-correcting IOLs can provide postkeratorefractive patients with satisfactory results and spectacle independence. In addition, the development of postoperative modifiable IOLs may prove to be the preferred option.


Subject(s)
Lens Implantation, Intraocular , Multifocal Intraocular Lenses , Presbyopia/surgery , Depth Perception/physiology , Humans , Keratomileusis, Laser In Situ/adverse effects , Photorefractive Keratectomy/adverse effects , Presbyopia/etiology , Presbyopia/physiopathology , Visual Acuity/physiology
20.
Rom J Ophthalmol ; 64(4): 364-379, 2020.
Article in English | MEDLINE | ID: mdl-33367174

ABSTRACT

Objective (aim): to test the refractive and visual outcomes and the quality of vision after the bilateral implantation of three different multifocal intraocular lenses (MIOLs) in patients with age-related cataract. Methods: In this retrospective, comparative study including 90 eyes of 45 cataract patients, bilateral implantation of either the hydrophilic trifocal Liberty® 677MY capsular bag IOL, the hydrophilic AT LISA® tri 839M lens, or the hydrophobic AcrySof® IQ PanOptix® IOL was performed during routine cataract surgery. Refractive outcomes, visual acuities (VA) for far, intermediate and near distances, as well as visual quality, dysphotopic events and spectacle use were evaluated six months postoperatively. Results: VA curves were similar for the three MIOLs, however the Liberty lens seemed to be superior for far and near, while AT LISA tri provided somewhat better VA in the intermediate range. Refractive correction was the most effective with the Liberty IOL (p=0.0131). Dysphotopic phenomena were usually perceived in low light conditions. Their frequency was lower with the AT LISA tri and Liberty lenses. Symptoms were significantly less disturbing for patients implanted with the Liberty lens, two-thirds of AT LISA tri and Liberty patients, while only 57% of PanOptix patients achieved spectacle independence. Conclusions: All examined MIOLs were found to be safe and efficient in presbyopia-correction of cataract patients, however different models had different advantages. The vision preferences of each patient should always be taken into consideration when choosing a MIOL, and the possible occurrence of dysphotopic events should be also clearly communicated in each case. Abbreviations: ACD = Anterior chamber depth, ANOVA = Analysis of variance, AXL = Axial length, CDVA = Corrected distance visual acuity, CYL = Cylinder; Cylindric refraction, D = Diopter, IOL = Intraocular lens, K1; K2 = Keratometry values, MIOL = Multifocal intraocular lens, n = Number of cases, n.a. = Not applicable, Postop = Postoperative, QoV = Quality of Vision, SD = Standard deviation, SEQ = Spherical equivalent, SPH = Sphere; Spherical refraction, UDVA = Uncorrected distance visual acuity, UIVA = Uncorrected intermediate visual acuity, UNVA = Uncorrected near visual acuity, VA = Visual acuity.


Subject(s)
Multifocal Intraocular Lenses , Patient Satisfaction , Presbyopia/surgery , Refraction, Ocular/physiology , Visual Acuity , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Presbyopia/physiopathology , Prosthesis Design , Retrospective Studies
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