Quantitative Microvascular Change Analysis Using a Semi-Automated Algorithm in Macula-on Rhegmatogenous Retinal Detachment Assessed by Swept-Source Optical Coherence Tomography Angiography.

PURPOSE: The purpose of this study was to objectively evaluate the longitudinal changes observed in the retinal capillaries in eyes with macula-on rhegmatogenous retinal detachment (RRD), assessed with optical coherence tomography angiography (OCTA), and to assess the role of these microvascular measures as potential biomarkers of postoperative visual outcomes. METHODS: This was a prospective, longitudinal study conducted on consecutive patients who underwent 25 G pars plana vitrectomy for primary RRD. The vessel area density (VAD), vessel skeleton density (VSD), and vessel diameter index (VDI) were assessed in the superficial (SCP) and deep (DCP) capillary plexuses. RESULTS: Twenty-three eyes with macula-on RRD were included in the study. The mean preoperative VDI, VAD, and VSD of the RRD eye were 18.6 ± 1.1, 0.43 ± 0.02, and 0.17 ± 0.01 in the SCP; and 18.6 ± 0.6, 0.38 ± 0.03, and 0.15 ± 0.01 in the DCP, respectively. At month 6, eight (34.8%) eyes achieved a best-corrected visual acuity (BCVA) gain ≥ 0.1 LogMAR. A preoperative VDI > 17.80, VSD > 0.170, and VDI-change > -0.395 in the SCP; and VDI > 18.11 and VDI change > -0.039 in the DCP were predictors of achieving a BCVA-gain ≥ 0.1 LogMAR. CONCLUSIONS: The preoperative VDI in SCP and DCP, the preoperative VSD in SCP, and their changes from preoperative values were predictors of visual outcomes. A quantitative OCTA analysis of capillary density and morphology may represent a potential predictive tool for surgical outcomes in RRD. The results reported in this study suggest that OCTA is a useful ancillary test for clinical disease management.

Ocular Decompression Retinopathy with Macular Edema after Deep Sclerectomy with Intrascleral Implantation.

We report a case of ocular decompression retinopathy (ODR) with macular edema, diagnosed by optical coherence tomography, after a deep sclerectomy (DS) with an intrascleral implant, resolved with medical therapy 6 months later. The medical literature reports that in 14% of patients suffering from ODR, a pars plana vitrectomy was required, and 15% of patients had a poor final visual acuity. An otherwise healthy 75-year-old man with high myopia and a primary open-angle glaucoma, with previous intraocular pressure (IOP) of 24 mm Hg, underwent a DS with intrascleral implant without complications. The patient suffered postoperatively from ODR with macular edema that required medical therapy with nonsteroidal anti-inflammatory eye drops (Nepafenac® 0.3%) for a period of 6 months. ODR is an infrequent complication that may occur after any surgical or medical procedure that causes a sudden IOP decrease. The presence of macular edema is only reported in 5% of cases and can occur in patients who report a decreased visual acuity, commonly associated with a retinal hemorrhage. We have described a case of ODR with macular edema after DS with intrascleral implant. Although ODR is considered to cause a low level of morbidity, in some patients this may not be the case.

An unusual presentation of uveitis in a HIV-infected late presenter patient / Presentación inusual de uveítis en un paciente HIV late presenter

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