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Purpose: To evaluate the efficacy of 0.7 mg intravitreal dexamethasone implant in the treatment of radiation maculopathy after stereotactic radiotherapy for posterior uveal melanoma., Methods: Retrospective chart review of seven eyes of seven consecutive patients was performed. Extracted data included age, sex, initial and follow-up visual acuities and central macular thickness values, intraocular pressure, follow-up time, number of implants, and time elapsed from radiotherapy to implantation. Main outcome measures were visual acuity and central macular thickness. Glaucoma, cataract formation, or systemic side effects, if any, were recorded., Results: Female to male ratio was 4:3. Mean age was 49.9 ± 17.0 (range: 27-73). Initial mean visual acuity was 20.4 ± 12.5 Early Treatment Diabetic Retinopathy Study letters and initial central macular thickness measured 514.1 ± 135.1 μm on spectral domain optical coherence tomography. All patients except one showed improvement in visual acuity and a mean improvement of 7.4 ± 6.2 letters was observed in the whole group (range: 0-16). The mean reduction in central macular thickness was 226.7 ± 157.0 μm after a mean 9.1 ± 3.4 months of follow-up. On average, implantation of intravitreal dexamethasone was performed 35.2 ± 16.5 months after radiotherapy. Four patients were treatment naive and three had previous intravitreal bevacizumab injections with limited response. Ozurdex reimplantations were performed in four patients and the mean number of injections was 1.7 ± 0.8. Mean time to reimplantation was 5.0 ± 2.12 months. Only one patient developed posterior subcapsular cataract and all patients had intraocular pressures within normal limits. No systemic side effects were observed., Conclusion: In our experience, intravitreal implantation of 0.7 mg dexamethasone is an anatomically, and to a lesser extent functionally effective procedure for radiation maculopathy after stereotactic radiotherapy for posterior uveal melanoma.

Purpose: To investigate the anatomical and visual results of intravitreal dexamethasone implant treatment for macular edema secondary to retinal vein occlusion. Materials and Methods: The study included a total of 25 patients undergoing dexamethasone implant for macular edema secondary to retinal vein occlusion. Retrospective evaluation included best corrected visual acuity (BCVA) measured with ETDRS charts and macular thickness using optical coherence tomography (OCT) at each visit. The contrast sensitivity levels of patients were evaluated with Pelli-Robson chart. Results: The mean age of the patients was 59.5±13.3 years (range, 34-84years). The mean follow-up time was14.6 ± 5.5 months (range, 6-27 months) and the mean number of implants was 2.6±1.5 (range,1-6). The increase in the visual acuity according to time was statistically significant (p<0.005). The decrease in macular edema was statistically significant (p<0.005). The initial mean contrast sensitivity before implant was 0.72±0.50 log, and the final mean contrast sensitivity was 1.08±0.46 log (p<0.005). No systemic adverse events were observed in any of the cases. When the ocular adverse effects were assessed, cataract progression was seen in 54.5% and cataract operations were performed on 4 patients (18.1%). The increase in intraocular pressure was statistically significant (p<0.005) and only one patient needed medical treatment. Conclusion: Dexamethasone implant had a positive effect on anatomic and visual results in retinal vein occlusion-associated macular edema but the ideal repeat interval for intravitreal dexamethasone treatment should be shorter than 6 months. [ABSTRACT FROM AUTHOR]