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AIM: To evaluate the binocular visual function in high myopia patients after the implantation of implantable collamer lens(ICL)V4c.METHODS: A total of 35 cases(70 eyes)that received binocular ICL implantation at our hospital from May 2019 to May 2021 were enrolled in this prospective study. Binocular full-range visual acuity, contrast sensitivity, stereopsis, mesopic vision and glare sensitivity, and monocular wavefront and the quality of vision questionnaire were assessed before the surgery and at 1 mo postoperatively.RESULTS: At 1 mo postoperatively, 35 cases(100%)had binocular uncorrected distance visual acuity(UDVA)≤0.00(LogMAR), 16 cases(46%)had binocular UDVA≥preoperative corrected distance visual acuity(CDVA). Binocular UDVA and uncorrected intermediate visual acuity(UIVA,80 cm)were improved compared to preoperative CDVA and distance-corrected intermediate visual acuity(DCIVA,80 cm)(all P<0.05).While there were no differences in the binocular postoperative UIVA(60 cm)and preoperative DCIVA(60 cm),and uncorrected near visual acuity(UNVA,40 cm)and preoperative distance-corrected near visual acuity(DCNVA,40 cm)(all P>0.05). The binocular contrast sensitivity was significantly improved postoperatively(P=0.001), and the postoperative binocular mesopic vision, glare sensitivity(no glare/glare)and binocular stereopsis(5 m/40 cm)had no differences(all P>0.05). The postoperative total higher-order aberration, trefoil aberration, coma and spherical aberration were increased, besides the median of total coma in the right eye with a pupil diameter of 3.0 mm was decreased after surgery. The mean total score of quality of vision questionnaire was significantly increased from 54.87 preoperatively to 80.92 after implantation(P<0.05), with high satisfaction and no obvious visual disturbance in patients.CONCLUSION: Although the monocular high-order aberrations increased in the early stage after ICL V4c binocular implantation in patients with high myopia, the binocular visual function was improved.
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Purpose: The goal of this study was to compare the difference in binocular visual function for high and low?moderate myopes before and after femtosecond laser?assisted in situ keratomileusis (FS?LASIK). Methods: Thirty?three subjects (17 males and 16 females) were divided into two groups according to their preoperative refractive errors in spherical equivalent (SE): low?moderate myopia group (SE ??6.00 D) and high myopia group (SE <?6.00 D). The binocular visual function including accommodative amplitude (AA), accommodative facility (AF), positive and negative relative accommodation (PRA and NRA, respectively), horizontal phoria measurement, positive and negative fusion vergence, accommodative–convergence over accommodation (AC/A) ratio, and stereopsis were assessed with the best?corrected vision before patients received FS?LASIK and 7 and 30 days after the surgery. Repeated measures analysis of variance (ANOVA) was applied to study the change in binocular visual function. Results: The AF values in both groups were significantly reduced after 7 days of FS?LASIK (baseline vs. day 7 (mean): high myopia group: 7.85 vs. 5.62 cpm, repeated ANOVA, P = 0.01; low?moderate myopia group: 5.95 vs. 4.40 cpm, repeated ANOVA, P = 0.04). This change returned to the baseline level 30 days after the operation. In addition, the horizontal phoria values in both groups were significantly reduced for both distant (P = 0.019 and P = 0.001, respectively) and near (P = 0.003 and P = 0.049, respectively) 7 days after the operation, but they rebound to preoperative state after 30 days. Conclusion: A transient change in binocular visual function was noticed after 7 days of FS?LASIK operation, which could cause symptoms of asthenopia. Our data showed all the binocular visual functions returned to baseline level after 30 days of operation.
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AIM: To investigate the effect of wearing an orthokeratology lens on postoperative binocular vision rebuilding in patients with intermittent exotropia combined with myopic refractive error.METHODS: Prospective control study. A total of 60 patients(120 eyes)with intermittent exotropia and myopia who underwent surgical treatment in our hospital from June 2019 to December 2020 were selected. Patients who wore orthokeratology lenses or monofocal frame glasses after surgery were divided into a treatment group(group A)and a control group(group B)according to the wishes of patients and their families, with 30 cases(60 eyes)in each group, and they were followed-up for 6mo. The third level visual function and Titmus near stereoscopic visual function of the two groups of patients were observed before and 6mo after surgery.RESULTS: There was no statistical significance in all observation indicators between group A and group B before surgery(P>0.05). After 6mo of surgery, patients with intermittent exotropia achieved significant improvement in binocular visual function and corrected eye position. Group A was superior to group B in terms of fusion range and near stereoscopic visual function(P<0.05). There was no statistical significance between the two groups in terms of simultaneous vision and stereoscopic visual function(P>0.05).CONCLUSION: The binocular visual function of patients with intermittent exotropia after surgery has significantly improved. Wearing orthokeratology lenses can effectively improve binocular visual function in patients with intermittent exotropia combined with myopia after surgery.
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@#AIM: To study the curative efficacy of different surgical procedures in the treatment of congenital unilateral monocular oblique paralysis and its effects on binocular vision function.<p>METHODS: Totally 82 children of congenital unilateral monocular oblique paralysis who received therapy from May 2016 to 2019 in our hospital were selected as research objects, operative plan was determined by the degree of hyperfunction of the inferior oblique muscle, the movement of the eyeball and the vertical obliquity of the eye position, the inferior oblique muscle tendon amputation(3 cases), partial inferior oblique muscle resection(63 cases), inferior oblique muscle recession(6 cases), posterior rectus muscle repair(4 cases), inferior oblique muscle weakening+contralateral/ipsilateral rectus muscle operation(5 cases), upper oblique folding(1 cases). The effects of different surgical procedures and the changes of binocular visual function, corrected visual acuity and compensatory head position before and after surgery were compared. <p>RESULTS: Compared with before surgery, the fusion function, hyperstereopsis, myopia, corrected visual acuity and compensatory head position were significantly improved after operation(<i>P</i><0.05); there was no significant difference in stereopsis between children with or without compensatory head position after operation(<i>P</i>>0.05). <p>CONCLUSION: Choosing different surgical methods according to the severity of congenital superior oblique paralysis has positive significance, which can improve the vision and compensating head position of children, and it's helpful to rebuild binocular vision function.
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@#AIM: To discuss the effect of fresnel press-on prisms combined with mental image network training on binocular visual function recovery of the postoperative concomitant strabismus(CS). <p>METHODS: Totally 120 postoperative children with CS were selected from January 2015 to January 2018 in our hospital. According to the random digital table method, they were divided into the combination group and the prism group, 60 cases in each group, the prism group was given fresnel press-on prisms treatment, the combination group was given mental image network training on the basis, the visual function recovery of the two groups was compared. <p>RESULTS: After 6mo treatment, binocular visual machine visual function and Titmus near stereopsis visual function in both groups were significantly higher than before, and the binocular visual machine visual function and Titmus near stereopsis visual function in the combination group were significantly higher than those in the single press group, the difference was statistically significant(all <i>P</i><0.05). The long distance fusion function normal rates in the combination group and the prism group were significantly higher than those before treatment, the long distance fusion function normal rate in the combination group was significantly higher than that in the prism press group, the difference was statistically significant(93.3% <i>vs</i> 70.0%, <i>P</i><0.05). <p>CONCLUSION: Fresnel press-on prisms combined with mental image network training can effectively promote the binocular visual function recovery of the postoperative children with CS, which is worth for further clinical promotion.
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·AIM: To investigate single step combined surgical treatments of Helveston syndrome. ·METHODS: A retrospective clinical analysis of 7 cases (14 eyes) with Helveston syndrome in our hospital. There were 14 eyes underwent single step combined surgical treatments, according to the degree of patients with superior oblique overaction and strabismus. A-pattern, dissociated vertical deviation (DVD), function of superior oblique and binocular visual function were examined and analyzed preoperatively and postoperatively. · RESULTS: Bilateral superior oblique intrathecal tenectomy combined bilateral rectus recession were performed in 3 cases (6 eyes). Bilateral superior oblique tenectomy combined unilateral rectus recession were performed in 4 cases (4 eyes). The follow-up was 6mo;14 eyes of 7 patients attained normal ocular alignment. A-pattern and DVD disappeared. Binocular vision and stereoscopic vision were recovered in 6 eyes of 3 children. ·CONCLUSION: Helveston syndrome can be treated with single step combined surgery, and early surgical treatments can help the recovery of binocular visual function.
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Orthokeratology can change the shape of the cornea and control the growth of the eye axis through the special design of its inverse geometry, which has achieved significant clinical effect on adolescent myopia correction. Thus,it has been highly praised by the experts at home and abroad and widely used. Recent studies show that orthokeratology can control the myopia anisometropia and improve the binocular vision in myopic. This article introduces the latest research progress on the effect and mechanism of orthokeratology control myopia, the treatment of anisometropia, the influence of ocular accommodation parameters and improvement of the binocular vision.
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@#AIM: To explore the effect of binocular visual function training on the reconstruction of binocular visual function and maintaining the stable eye position in postoperative patients with intermittent exotropia. <p>METHODS: A total of 142 patients with intermittent exotropia underwent strabismus surgery in our hospital from January 2010 to December 2015 were enrolled. These patients were divided into two groups according to whether had binocular visual function training after surgery. The treatment group was used the DV-100 system to train the three-level visual function after surgery. For the control group, no intervention was performed after the operation. Respectively analysis the differences of binocular visual function and eye position in the two groups of patients before and 1mo after surgery, 3mo after surgery, 6mo after surgery, and 1a after surgery. <p>RESULTS: The rate of the positive eye position in the treatment group was higher than the control group in the 6mo and 1a after surgery, and statistically significant difference was found(<i>P</i><0.05). In 1, 3, 6mo and 1a after surgery, there were statistically significant differences in binocular visual function between the two groups. The recovery of binocular visual function in the treatment group was significantly better than that in the control group. <p>CONCLUSION: The binocular visual function may have a certain degree of recovery in the patients with intermittent exotropia after surgery to obtain positive eye position. Through the postoperative visual perception learning and binocular visual function training, the binocular visual function can be better and faster recovered and reconstructed so as to obtain stereoscopic vision. It can better stabilize the eye position and help to reduce the rate of the patient's eye position fallback after surgery.
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PURPOSE: To analyze the effect of stereopsis and contrast sensitivity on the quality of life and to evaluate the relationship between integrated binocular visual field (IVF) and binocular visual function in bilateral normal tension glaucoma (NTG) patients. METHODS: Stereopsis and contrast sensitivity tests were performed and compared among 44 NTG patients and 32 normal subjects. The IVF was integrated using the best location method. The correlation between visual function and subscales of the National Eye Institute Visual Function Questionnaire 25 (NEI VFQ-25) was evaluated using univariate linear regression. RESULTS: Stereopsis and contrast sensitivity for the bilateral NTG patients were decreased compared to the normal controls. Stereopsis and contrast sensitivity exhibited a significant correlation with social functions related to vision and color vision among subscales of NEI VFQ-25. IVF mean deviation (MD) and better eye MD showed a significant correlation with stereopsis and contrast sensitivity, while worse eye MD showed no association. CONCLUSIONS: Deterioration of stereopsis and contrast sensitivity in NTG patients affects their quality of life related to social functions and color vision. Both IVF and better eye MDs are correlated with stereopsis and contrast sensitivity in NTG patients.
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Humans , Color Vision , Contrast Sensitivity , Depth Perception , Linear Models , Low Tension Glaucoma , Methods , Quality of Life , Telescopes , Visual FieldsABSTRACT
AIM: To investigate the preoperative binocular visual function of intermittent exotropia and the rebuilding and recovery of the postoperative binocular visual function, and analyze the effect of binocular visual function on orthophoria after surgery. METHODS:From January 2011 to January 2014, 47 basic intermittent exotropia patients caming for treatment were collected in the clinical data. The changes in their near stereopsis, binocular visual function, binocular fusion and distance stereopsis after operations were recorded in the form of data. The preoperative binocular vision and the postoperative rebuilding were analyzed and contrasted with each other. In addition, the effect on the postoperative maintaining of orthophoria due to the existence, recovery and rebuilding of binocular visual function were observed. RESULTS:Intermittent exotropia patients got damage in different levels on their binocular visual functions, especially on distance stereopsis, which was the heaviest and earliest. After the operation, all functions were obviously recovered and reconstructed and the improvements were statistically significant compared against those before the operation (PCONCLUSION: The intermittent exotropia cause damage to the stereopsis which happened the earliest. Obvious recovery and reconstruction of binocular visual function can be observed after the surgery. A relatively good preoperative binocular visual function may lead to the increase in the ratio of orthophoria or cure the intermittent exotropia. Performing an operation when distance stereopsis is damaged can increase the success rate for the surgery and reduce the recurrence rate.
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AIM: To evaluate the effect of binocular visual function training in pediatric ocular trauma. METHODS: There were 76 patients (76 eyes) that were hospitalized with a primary diagnosis of ocular injury at the Affiliated Hospital of Medical College, Qingdao University between January 2006 and December 2009. Binocular visual function training was given after primary wound repair. Far stereopsis function were checked using AIT-1000 synoptophore fusion, and near stereopsis function was checked using Titmus stereogram.Binocular visual function was compared before and after training. RESULTS: Before binocular visual function training,26 eyes（34%）had no binocular vision, after training there were only 16 eyes（21%） without binocular vision. Before undertaking binocular visual function training with fusion, only 27 eyes (36%) had binocular vision, after the training there were 48 eyes (63%) with binocular vision. Before undertaking binocular visual function training with far stereopsis ,there were 23 eyes (30%) with binocular vision, after the training there were 29 eyes (38%). Before binocular visual function training with near stereopsis, there were 14 eyes (18%) with binocular vision, after the training there were 33 eyes (43%) with binocular vision. There was a significant difference in the number of patients with binocular vision before and after binocular visual function training. CONCLUSION:The training is useful for the reconstruction of binocular visual function in pediatric ocular trauma.
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AIM: To investigate the postoperative changes of binocular visual function in patients with congenital superior oblique palsy.METHODS: Eye position and binocular visual function were examined in 28 patients with congenital superior oblique palsy pre- and post-operatively. The results were statistically analyzed.RESULTS: The normal eye position rate after operation was 89.3%. There were 9 patients who gained simultaneous perception after operation, while 13 patients gained fusion as many as that gained stereoacuity. There was statistically significant difference between postoperative and preoperative eyes (P<0.05). Near stereoacuity was improved after operation. Patients who had better visual acuity and low strabismus degrees as well as fusion had a better recovery.CONCLUSION: The operation could improve the eye position and rebuild the binocular visual function of the congenital superior oblique palsy. The recovery of binocular visual function was related to visual acuity and strabismus degrees of the patients and whether they had fusion function.
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To evaluate the results of bilateral recession in large angle exotropia we examined medical records of 73 patients who had exotropia larger than 35PD and underwent bilateral lateral rectus recession. The mean of follow-up period was 16months. Successful alignment, defined as a final alignment of orthophoria, esotropia less than 5PD or exotropia less than 10PD was achieved in 44 patients(60.3%). There were no differences in age, refractive error, preoperative angle of deviation, prevalence of amblyopia, the presence and concurrent correction of vertical or cyclodeviation, the development of diplopia and the duration of follow-up period between the successful alignment group and failure group. The esodeviation on postoperative one-day tended to ensure a more satisfactory result, but it was not statistically significant. There were no statistically significant differences in stereoacuity and postoperative angle of deviation among the different fusional ability groups. The stereoacuity and postoperative angle of deviation did not show a positive correlation. However, on the two separate examinations of the stereoacuity and fusional ability, the latter results showed improvement in both parameters. This result suggests that the correction of exodeviation may play a role in improving binocular visual function in patients with large angle exotropia.