Clinical Characteristics of Patients with Intraocular Lens Calcification after Pars Plana Vitrectomy.

AIM: To determine the clinical risk factors that may increase the occurrence of intraocular lens (IOL) calcification in patients who had undergone pars plana vitrectomy (PPV). METHODS: The medical records of 14 patients who underwent IOL explantation due to clinically significant IOL opacification after PPV were reviewed. The date of primary cataract surgery, technique and implanted IOL characteristics; the time, cause and technique of PPV; tamponade used; additional surgeries; the time of IOL calcification and explantation; and IOL explantation technique were investigated. RESULTS: PPV had been performed as a combined procedure with cataract surgery in eight eyes and solely in six pseudophakic eyes. The IOL material was hydrophilic in six eyes, hydrophilic with a hydrophobic surface in seven eyes and undetermined in one eye. The endotamponades used during primary PPV were C2F6 in eight eyes, C3F8 in one eye, air in two eyes and silicone oil in three eyes. Two of three eyes underwent subsequent silicone oil removal and gas tamponade exchange. Gas in the anterior chamber was detected in six eyes after PPV or silicone oil removal. The mean interval between PPV and IOL opacification was 20.5 ± 18.6 months. The mean BCVA in logMAR was 0.43 ± 0.42 after PPV, which significantly decreased to 0.67 ± 0.68 before IOL explantation for IOL opacification (p = 0.007) and increased to 0.48 ± 0.59 after the IOL exchange (p = 0.015). CONCLUSIONS: PPV with endotamponades in pseudophakic eyes, particularly gas, seems to increase the risk for secondary IOL calcification, especially in hydrophilic IOLs. IOL exchange seems to solve this problem when clinically significant vision loss occurs.

Prevalence of Back Pain among German Ophthalmologists.

INTRODUCTION: The aim of this study was to evaluate the prevalence of back pain among German ophthalmologists, to investigate the relationship towards age, gender, various profession-related factors, to correlate localization of pain to subspecialties, and to explore individual therapeutic and coping strategies. METHODS: In this prospective, cross-sectional survey, a 9-item questionnaire was sent via mail to all members of the German professional association of ophthalmologists "Berufsverband der Augenärzte Deutschlands e.V. (BVA)." Responses were analyzed according to a pre-specified analysis plan. RESULTS: From a total of 5,954 members contacted, 1,861 copies (31%) were received back, of which 1,807 (30%) were suitable for analysis. 913 (51%) participants were female and 876 (48%) were male, with a median age of 50 years (interquartile range: 44; 57). 1,464 ophthalmologists (81%) reported current back problems, considerably more than had been reported in the general population or in other medical specialties. Older age, female gender, and higher number of professional years appeared to be risk factors for developing back pain. Overall, neck pain was the leading symptom in 951 attendees (65%) but differed between ophthalmologists who primarily performed conservative treatment (cervical spine) and those who performed surgery (mainly lumbar spine). 1,037 participants (71%) link their complaints to their occupational activity. Exercising and back training were reported as common strategies for prevention and coping with the problem. Recommendations for improvement were mainly ergonomic optimization of the working place. CONCLUSIONS: The prevalence of back pain complaints in German ophthalmologists is high. Neck pain (65%) was the leading localization, followed by low back pain (53%) and shoulder (38%) problems, which might emphasize a special back pain complaint profile in ophthalmologists. Low back pain seems to be more common in ophthalmologists with surgical specialization than in those with mainly medical tasks. The high prevalence of back pain in ophthalmologists should be communicated with employers, the industry, and professional societies to develop and implement a strategy to prevent occupational-related musculoskeletal disorders and preserve the ability to work and the quality of life.

Surgical Management of Choroidal Diseases. / Chirurgisches Management bei Erkrankungen der Aderhaut.

Accumulation of serous fluid in the suprachoroidal space, known as uveal effusion, and choroidal or suprachoroidal haemorrhage (SCH) following rupture of ciliary blood vessels are considered rare, but serious, events with extremely poor functional prognosis. As a result, uveal effusion, and expulsive suprachoroidal haemorrhage in particular, continue to be considered as more or less fatal complications. However, clinical experience demonstrates that both clinical entities can be managed by conservative as well as surgical strategies, depending on their severity and localisation, with sometimes surprisingly favourable visual outcome. In addition to prognostic factors, timely recognition and prompt, if possible preventive, acute care, as well as carefully considered timing of adequate surgical measures taking advantage of the specific characteristics of the choroidal tissue, are crucial to treatment success. Along with technical advances in the field of vitreoretinal surgery, numerous variants of therapeutic approaches to the treatment of choroidal effusion and suprachoroidal haemorrhage have been proposed to date. This review presents some of the most important surgical techniques and strategies in the field.

The impact of vitrectomy on outcomes achieved with 0.19 mg fluocinolone acetonide implant in patients with diabetic macular edema.

BACKGROUND: There is a lack of consensus on the use of intravitreal corticosteroid therapies in patients with diabetic macular edema (DME) and prior vitrectomized eyes in clinical practice. METHODS: Retro-IDEAL was a 3-year retrospective, multicenter study in patients with chronic DME (i.e. DME that persists or recurs despite treatment) treated with ILUVIEN® (0.2 µg daily fluocinolone acetonide intravitreal implant), who had suboptimal outcomes with first-line vascular endothelial growth-factor inhibitors and other DME therapies. RESULTS: A total of 81 eyes (63 patients) were included of which 39 eyes had undergone prior vitrectomy (PV group) while 42 eyes had not undergone prior vitrectomy (NPV). Baseline characteristics were balanced; however, more patients had proliferative diabetic retinopathy in the PV group vs. the NPV group (21.62% vs 9.38%, respectively). Over 36 months, mean visual acuity (VA) increased in both groups with a tendency for more ETDRS letters being gained in the NPV group (+5.33) vs. the PV group (+2.42). By month 36, central retinal thickness was reduced to ⩽300 µm in two-thirds of the eyes in both groups and the mean change from baseline in intraocular pressure was similar in both groups (+0.50 mmHg -0.75 mmHg; NPV and PV group). CONCLUSIONS: These long-term data suggest that the 0.2 µg/day FAc implant is effective in both vitrectomized and non-vitrectomized patients, with a manageable safety profile, and improved VA and reduced supplemental therapies for patients with a suboptimal response to first-line DME therapies. Clinicians may consider utilizing the FAc implant earlier in the DME disease process.

Management of vitreous floaters: an international survey the European VitreoRetinal Society Floaters study report.

BACKGROUND/OBJECTIVES: To evaluate the efficacy and safety of pars plana vitrectomy for symptomatic floaters. SUBJECTS/METHODS: Forty-eight vitreoretinal surgeons from 16 countries provided information on 581 eyes who underwent vitrectomy for floaters in this retrospective survey study conducted by European VitreoRetinal Society. Percentage symptomatic improvement, incidence of retinal tears/detachment and post-vitrectomy cataract surgery, and the factors associated with satisfaction and complications were investigated. RESULTS: Ninety-two percent were satisfied with the results, with 86.3% reporting complete resolution of daily-life symptoms. Overall satisfaction was lower in patients with smaller vitreous opacities at presentation (OR:0.4). Iatrogenic retinal breaks occurred in 29 eyes (5%). Core vitrectomy and cut rates of 1500-4000 or >4000 cuts/min were associated with lower risk of retinal breaks than complete vitrectomy (OR:0.05) and cut rates < 1500 cuts/min (OR: 0.03, 0.12, respectively). Fourteen eyes (2.4%) developed retinal detachment at a median of 3 months; and 84 (48.6%) developed cataract at a median of 16 months post-vitrectomy. CONCLUSIONS: Pars plana vitrectomy resulted in high patient satisfaction with relatively low rate of severe complications in a large group of patients. The procedure may be safer when core vitrectomy and cut rates > 1500 cuts/min are favoured. Proper patient selection and informed consent are the most important aspects of surgery.

Three-year results from the Retro-IDEAL study: Real-world data from diabetic macular edema (DME) patients treated with ILUVIEN® (0.19 mg fluocinolone acetonide implant).

INTRODUCTION: The Retro-IDEAL (ILUVIEN Implant for chronic DiabEtic MAcuLar edema) study is a retrospective study designed to assess real-world outcomes achieved with the ILUVIEN® (0.19 mg fluocinolone acetonide (FAc)) in patients with chronic diabetic macular edema (DME) in clinical practices in Germany. METHODS: This study was conducted across 16 sites in Germany and involved 81 eyes (63 patients) with persistent or recurrent DME and a prior suboptimal response to a first-line intravitreal therapy (primarily anti-VEGF intravitreal therapies). RESULTS: Patients were followed-up for 30.8 ± 11.3 months (mean ± standard deviation) and had a mean age of 68.0 ± 10.4 years. Best-recorded visual acuity (BRVA) improved by +5.5 letters at month 9 (P ⩽ 0.005, n=56; from a baseline of 49 letters) and this was maintained through to month 30 (P ⩽ 0.05, n = 42). There was a concurrent improvement in central macular thickness with a reduction from 502 µm at baseline to 338 µm at year 1 (P ⩽ 0.0001, n = 43). This effect was sustained to year 3 (i.e. 318 µm; P ⩽ 0.0001, n = 29). Mean intraocular pressure (IOP) remained constant between baseline and year 3 with a peak change of 1.9 mm Hg occurring at year 1. Elevated IOP was observed in a similar percentage of patients prior to (22.2% of cases) and following (27.2%) treatment with the FAc implant. In the majority of cases, these elevations were managed effectively with IOP medications. CONCLUSIONS: Despite substantial amounts of prior intravitreal treatments - primarily with anti-vascular endothelial growth factor (VEGF) drugs - this real-world study showed that sustained structural and functional improvements can last for up to 3 years with a single FAc implant.

An international collaborative evaluation of central serous chorioretinopathy: different therapeutic approaches and review of literature. The European Vitreoretinal Society central serous chorioretinopathy study.

PURPOSE: To study and compare the efficacy of different therapeutic options for the treatment of central serous chorioretinopathy (CSCR). METHODS: This is a nonrandomized, international multicentre study on 1719 patients (1861 eyes) diagnosed with CSCR, from 63 centres (24 countries). Reported data included different methods of treatment and both results of diagnostic examinations [fluorescein angiography and/or optical coherent tomography (OCT)] and best-corrected visual acuity (BCVA) before and after therapy. The duration of observation had a mean of 11 months but was extended in a minority of cases up to 7 years. The aim of this study is to evaluate the efficacy of the different therapeutic options of CSCR in terms of both visual (BCVA) and anatomic (OCT) improvement. RESULTS: One thousand seven hundred nineteen patients (1861 eyes) diagnosed with CSCR were included. Treatments performed were nonsteroidal anti-inflammatory eye drops, laser photocoagulation, micropulse diode laser photocoagulation, photodynamic therapy (PDT; Standard PDT, Reduced-dose PDT, Reduced-fluence PDT), intravitreal (IVT) antivascular endothelial growth factor injection (VEGF), observation and other treatments. The list of the OTHERS included both combinations of the main proposed treatments or a variety of other treatments such as eplerenone, spironolactone, acetazolamide, beta-blockers, anti-anxiety drugs, aspirin, folic acid, methotrexate, statins, vitis vinifera extract medication and pars plana vitrectomy. The majority of the patients were men with a prevalence of 77%. The odds ratio (OR) showed a partial or complete resolution of fluid on OCT with any treatment as compared with observation. In univariate analysis, the anatomical result (improvement in subretinal fluid using OCT at 1 month) was favoured by age <60 years (p < 0.005), no previous observation (p < 0.0002), duration less than 3 months (p < 0.0001), absence of CSCR in the fellow eye (p = 0.04), leakage outside of the arcade (p = 0.05) and fluid height >500 µm (p = 0.03). The OR for obtaining partial or complete resolution showed that anti-VEGF and eyedrops were not statistically significant; whereas PDT (8.5), thermal laser (11.3) and micropulse laser (8.9) lead to better anatomical results with less variability. In univariate analysis, the functional result at 1 month was favoured by first episode (p = 0.04), height of subretinal fluid >500 µm (p < 0.0001) and short duration of observation (p = 0.02). Finally, there was no statistically significant difference among the treatments at 12 months. CONCLUSION: Spontaneous resolution has been described in a high percentage of patients. Laser (micropulse and thermal) and PDT seem to lead to significant early anatomical improvement; however, there is little change beyond the first month of treatment. The real visual benefit needs further clarification.

International Practice Patterns for the Management of Acute Postsurgical and Postintravitreal Injection Endophthalmitis: European Vitreo-Retinal Society Endophthalmitis Study Report 1.

PURPOSE: To study the practice patterns for the management of acute postoperative and postinjection endophthalmitis. DESIGN: Retrospective, interventional, nonrandomized, multicenter study. PARTICIPANTS: Data on 237 eyes diagnosed with acute endophthalmitis occurring after intraocular surgery or procedures provided by 57 retina specialists from 28 countries. MAIN OUTCOME MEASURES: Rates of pars plana vitrectomy (PPV), repeat intravitreal injection, and adjunctive therapeutic regimens (local and systemic antibiotics and steroids). RESULTS: Of 237 analyzed eyes, acute endophthalmitis secondary to cataract surgery or secondary lens implantation represented 64.6% of cases (153 eyes), whereas the remaining were secondary to intravitreal injections (35 eyes [14.8%]), PPV (29 eyes [12.2%]), and other intraocular surgeries (20 eyes [8.4%]). All eyes received intravitreal antibiotics on the same day of diagnosis. Overall, early PPV was used within the first week of presentation in 176 eyes (74.3%). There was no statistical difference in the proportion of eyes requiring a second intravitreal injection of antibiotics whether the eye was managed primarily with intravitreal antibiotics alone versus early PPV plus intravitreal antibiotics (29.5% [18 eyes] vs. 25.0% [44 eyes], respectively). Adjunctive therapies in the form of intravitreal steroids, systemic steroids, and systemic antibiotics were used in 25.3%, 21.9%, and 66.6% of eyes, respectively. The absence of disc or macular view and absence of endophthalmitis after cataract surgery were associated with an increased likelihood for early PPV (odds ratios 4.1 and 5.1, respectively). CONCLUSIONS: Pars plana vitrectomy was frequently performed regardless of the presenting vision in eyes with endophthalmitis after cataract surgery and intravitreal injections. Increased vitreous opacification was associated with a higher probability for performing PPV.

[Pars plana vitrectomy]. / Pars-plana-Vitrektomie.

Pars plana vitrectomy (PPV) allows the treatment of a multitude of vitreoretinal disorders involving the vitreous, the retina or the choroid. There is a multitude of possible surgical sequences: peeling maneuvers, liquid perfluorocarbone, removal of traction and media opacities, retinopexy or destructive photocoagulation, and as ultima ratio, retinotomies and retinectomies. The intravitreal tamponade serves as a substitute in the vitreous cavity, allowing photoreceptors and retinal pigment epithelium (RPE) to reconnect. Due to the many potential complications, close monitoring is required after pars plana vitrectomy during the early postoperative period. Late-onset complications are usually associated to the dynamics of the underlying disease.

[Scleral Buckling]. / Eindellende Operationstechniken.

Buckling techniques are used for rhegmatogenous (break-induced) retinal detachment. The aim is to achieve a functional closure of the retinal breakwith permanent retinal attachment by scleral indentation and coagulation of retinal holes. The surgery is primarily extraocular. The use of different buckling methods depends on various factors. The success rates are high at 54 - 97% after the initial procedure, but decrease as the macula is detached. When the possibilities of the scleral buckling procedures are exhausted, pars plana vitrectomy is the next therapeutical option. In recent years, however, there is a trend to primarily address even a simple rhegmatogenic retinal detachment with vitreous surgical methods.

Material Analysis and Optical Quality Assessment of Opacified Hydrophilic Acrylic Intraocular Lenses After Pars Plana Vitrectomy.

PURPOSE: Explanted hydrophilic intraocular lenses (IOLs) with clinically significant opacification after pars plana vitrectomy (PPV) were assessed for material change and optical quality, in an in vitro laboratory study. DESIGN: Retrospective observational case series. METHODS: Ten opacified IOLs after PPV with intraocular gas injection were analyzed in a laboratory setting. Analyses included evaluation of patients' medical history, optical quality assessment, light microscopy, histologic staining, scanning electron microscopy, and energy dispersive x-ray spectroscopy. RESULTS: In all 10 IOLs a thin layer of calcium phosphate that had accumulated underneath either the anterior or posterior optical surface in a central circular area of the IOL optic caused the opacification. The calcifications lead to deterioration of the modulation transfer function (MTF) across all spatial frequencies. CONCLUSION: PPV with instillation of gas into a pseudophakic eye with an acrylic hydrophilic lens seems to increase the risk for secondary calcification irrespective of the manufacturer. In these cases, IOL exchange is the only treatment option available. Since IOL exchange is associated with a high intraoperative complication rate, our results suggest to consider the risk of IOL calcification when implanting hydrophilic acrylic IOLs.

Strategy for the management of macular edema in retinal vein occlusion: the European VitreoRetinal Society macular edema study.

OBJECTIVE: To compare the efficacy of different therapies in the treatment of macular edema associated with retinal vein occlusion (RVO). DESIGN: This is a nonrandomized, multicenter collaborative study. PARTICIPANTS: 86 retina specialists from 29 countries provided clinical information, including choice of treatment and outcome, on 2,603 patients with macular edema including 738 cases of RVO. METHODS: Reported data included the type and number of treatments performed, visual acuities, and other clinical and diagnostic findings. MAIN OUTCOME MEASURES: The mean increase in visual acuity and mean number of treatments performed. RESULTS: 358 cases of central retinal vein occlusion (CRVO) and 380 cases of branch retinal vein occlusion (BRVO) were included in this investigation. Taking all RVO cases together, pars plana vitrectomy with internal limiting membrane (ILM) peeling alone resulted in an improvement in vision greater than other therapies. Those treated with intravitreal antivascular endothelial growth factor (anti-VEGF) injection alone showed the second greatest improvement in vision. Dexamethasone intravitreal implant alone and intravitreal triamcinolone alone both resulted in modest visual gains. CONCLUSIONS: In the treatment of macular edema in RVO, vitrectomy with ILM peeling may achieve visual improvement and may be a good option for certain cases. Anti-VEGF injection is the most effective of the nonsurgical treatments.

Retrospective, observational study in patients receiving a dexamethasone intravitreal implant 0.7 mg for macular oedema secondary to retinal vein occlusion.

PURPOSE: To retrospectively evaluate the re-injection interval, efficacy and safety of dexamethasone (DEX) intravitreal implant 0.7 mg in the treatment of macular oedema (ME) due to retinal vein occlusion (RVO) in Germany in 2009-2012. METHODS: Retrospective, multicentre, anonymised observational study of data collected from the first DEX implant 0.7 mg injection through 3-6 months following the last injection. Data were included if the patient was >18 years old, had a diagnosis of ME secondary to branch or central RVO, and received at least 2 DEX implant 0.7 mg injections during routine practice. RESULTS: Data from 87 patients were analysed. Mean time to re-injection between first and second treatments was 5.03 months in the total RVO population, and 5.46 and 4.52 months for the branch and central RVO subpopulations, respectively. An intraocular pressure increase of >25 mm Hg was recorded in 20% of patients, and 34% of patients began treatment with anti-glaucoma medication, but surgery was not needed for this condition. CONCLUSIONS: DEX implant 0.7 mg was found to be well tolerated and effective with repeat treatments in clinical practice.

Retinal folds following retinal detachment surgery.

PURPOSE: To review the occurrence of macular retinal folds following retinal detachment surgery. METHOD: Review of the literature. RESULTS: Macular folds have been reported in up to 3% of cases postoperatively. Risk factors are tamponading gas bubble, large exoplants, detachments with bullous configuration or running through the fovea, and incomplete drainage of subretinal fluid. Preventive measures include correct posturing and avoidance of modifiable risk factors. The natural history is variable. Complete resolution as well as persisting folds with permanent structural damage have been reported. Treatment indications and techniques remain controversial. Very few successful reports of surgical correction have been published to date. CONCLUSIONS: Macular folds are a serious but underreported complication of retinal detachment surgery that can be avoided in the majority of cases. Macular folds can be prevented by correct posture and avoiding large exoplants, large tamponade bubbles and incomplete drainage of subretinal fluid.

Systematic evaluation of ICG and trypan blue related effects on ARPE-19 cells in vitro.

The aim of our study was a systematic analysis of the impact of variable parameters on indocyanine green (ICG) and trypan blue (TB) related cytotoxicity on human RPE cells. ARPE-19 cells were incubated with ICG (5.0-0.025mg/ml), with ICG-free solutions of corresponding osmolarities or with TB (1.5-0.0375mg/ml). Incubation lasted 1-20min with or without endolight illumination for 1min or 5min. Cell viability and morphology were examined after 6h, 24h and 72h to detect acute and delayed effects. In the absence of endolight, ICG cytotoxicity depends on osmolarity and exposure time. In the presence of endolight, cytotoxic effects are influenced by dye concentration. TB cytotoxicity depends on dye concentration and exposure time, but not on illumination. All observed cytotoxic effects were mainly acute. Both ICG and TB can be cytotoxic depending on concentration and exposure time. ICG related cytotoxic effects are additionally determined by osmolarity and phototoxicity. However, concentrations (<1mg/ml) and incubation times (<5min) as used in clinical practice would appear to be well tolerated.

Influence of verteporfin photodynamic therapy on inflammation in human choroidal neovascular membranes secondary to age-related macular degeneration.

PURPOSE: To examine the short- and long-term consequences of verteporfin photodynamic therapy (PDT) on inflammation with regard to infiltration of macrophages and leukocytes and expression of thy-1 in human choroidal neovascularization membranes (CNV) secondary to age-related macular degeneration (AMD). METHODS: Retrospective review of an interventional case series of 43 patients who underwent removal of CNV. Twenty patients were treated with PDT 3 to 246 days preoperatively. Twenty-three CNV without previous treatment were used as control. CNV were stained for CD34, CD105, cytokeratin 18, Ki-67, thy-1, an endothelial cell glycoprotein known to be upregulated only by inflammatory cytokines, CD68 (macrophages), and CD45 (common leukocyte antigen). RESULTS: Specimens treated by PDT 3 days previously showed significantly reduced endothelial thy-1 expression (P = 0.008), leukocyte (P=0.04) and macrophage (P=0.0063) infiltration, and proliferative activity (P=0.02) compared to control CNV. Specimens at longer intervals after PDT, in contrast, disclosed a significantly increased expression of thy-1 (P=0.004), infiltration with leukocytes (P=0.044) and macrophages (P=0.01), and proliferative activity (P=0.03) compared to CNV excised 3 days after PDT. CONCLUSIONS: The rebound effect after PDT seems to be based on an inflammatory response that contributes to enhanced proliferation. These data support the need for an anti-inflammatory therapy as adjuvant to PDT.

Bevacizumab (Avastin) treatment in patients with retinal angiomatous proliferation.

AIM: To determine the anatomical and functional outcome after injection of bevacizumab (Avastin, Genentech) in eyes with retinal angiomatous proliferation (RAP). DESIGN: Prospective interventional case series. METHODS: Sixteen eyes of 16 consecutive patients with visual loss due to RAP underwent intravitreal injections of 1.25 mg (0.05 ml) bevacizumab. Best corrected visual acuity testing, fluorescein and ICG-angiography as well as OCT imaging were performed at baseline and at each follow-up visit within a 3-month period. RESULTS: Mean visual acuity pre-injection was 0.68 +/- 0.36 logMAR (n = 16), mean reading ability 0.58 +/- 0.26 logRAD (n = 11). Far vision increased significantly by a mean of 1.7 +/- 2 lines 4 weeks after the injection (p = 0.004), as did reading (0.6 +/- 2.3 lines, p > 0.05). Both remained stable up to 3 months. Central retinal thickness decreased from 367 +/- 112 microm (mean+/-SD) to 272 +/- 123 microm 3 months after injection (p = 0.006). Leakage decreased angiographically in 12 eyes (75%) and remained stable in four eyes (25%). Re-injection of bevacizumab within the 3-month follow-up period was performed once in eight eyes, and twice in one eye. No adverse events were observed. CONCLUSION: Intravitreal bevacizumab (Avastin) resulted in a reduction of leakage, intra- and subretinal fluid. An increase in visual acuity was seen already 4 weeks after first injection. However, a complete occlusion of feeder vessels could not be achieved within this 3-month period. Randomized clinical trials would be required to evaluate dose and frequency of injections and possible beneficial effects of combination therapies, as well as the long-term results.