伊藤 逸毅

PURPOSE: To investigate the incidence of postoperative macular hole (MH), visual acuity, and anatomical recovery in patients who underwent a non-fovea-sparing technique using a double-staining method for symptomatic myopic foveoschisis without pre-existing macular holes. STUDY DESIGN: A retrospective study. METHODS: We evaluated 39 eyes from 39 consecutive patients diagnosed with myopic foveoschisis from May 2017 to September 2022 at Fujita Health University Hospital. All patients underwent non-fovea-sparing internal limiting membrane peeling using a double-staining method and were monitored for 6 months postoperatively. Best-corrected visual acuity (BCVA) as measured by the logarithm of the minimum angle of resolution (logMAR), central retinal thickness (CRT), and the presence of foveoschisis were assessed using optical coherence tomography (OCT) preoperatively (pre) and at 1 month (1 M), 3 months (3 M), and 6 months (6 M) postoperatively. RESULTS: No cases of postoperative rhegmatogenous retinal detachment were observed. A postoperative MH developed in one eye. The mean logMAR values at pre, 1 M, 3 M, and 6 M were 0.38 ± 0.37, 0.23 ± 0.33, 0.18 ± 0.25, and 0.13 ± 0.29, respectively (all P < 0.001). The mean CRTs at pre, 1 M, 3 M, and 6 M were 384.6 ± 177.2, 262.2 ± 84.4, 200.3 ± 64.9, and 185.6 ± 61.0 μm, respectively (all P < 0.001). Foveoschisis was observed in all 39 eyes (100%) preoperatively and in 17 eyes (43.6%) at 1 M, nine eyes (34.6%) at 3 M, and zero eyes (0%) at 6 M postoperatively. CONCLUSION: The non-fovea-sparing double-staining technique was effective in treating myopic foveoschisis without MH, leading to significant improvements in both visual function and anatomical recovery. This method may be a promising surgical option for managing myopic foveoschisis.

Purpose: Retinal arterioles are attenuated in eyes with retinitis pigmentosa (RP), but dimensions such as lumen diameter (LD) and wall thickness (WT) have not been thoroughly investigated. This study aimed to determine the dimensions of reduced retinal arterioles in eyes with RP. Methods: The study included 66 patients with RP (66 eyes) and 36 control participants (36 eyes) for whom adaptive optics (AO) recordings of the retinal arteries were available. LD and WT were measured on the AO images. The correlations between arteriole dimensions and clinical parameters were determined. Results: The mean LD was significantly smaller in patients with RP than in controls, while the mean WT did not differ significantly. LD was significantly and positively correlated with the mean deviation (MD) of the Humphrey 10-2 field analyzer and ellipsoid zone (EZ) width. The WT and wall-to-lumen ratio were significantly and positively correlated with age and systolic blood pressure but not with MD and EZ width. Conclusion: Retinal arteriole dimensions were significantly correlated with retinal degeneration and systemic factors.

PURPOSE: To assess the feasibility of swept-source optical coherence tomography angiography (SS-OCTA) to differentiate macular diseases, including nonpolypoidal macular neovascularization (MNV), polypoidal choroidal vasculopathy (PCV), type 3 MNV, and chronic central serous chorioretinopathy (CSC) without indocyanine green angiography (ICGA). STUDY DESIGN: Retrospective observational study. METHODS: This study examined 63 eyes of 63 patients with treatment-naive neovascular age-related macular degeneration (AMD), including 23 eyes with nonpolypoidal MNV, 17 eyes with PCV, and 1 eye with type 3 MNV and 22 eyes with chronic CSC. Two independent retina specialists, blinded to the clinical diagnosis, assessed each case of neovascular AMD and chronic CSC using only B-scan and en face images of SS-OCTA without referring to other examination outcomes. RESULTS: By SS-OCTA alone, 19 eyes were diagnosed with nonpolypoidal MNV, 17 eyes with PCV, 2 eyes with type 3 MNV, and 22 eyes with chronic CSC, indicating high sensitivity (82.6%, 94.1%, 100%, and 100%, respectively) and specificity (100%, 97.8%, 98.4%, and 100%, respectively); however, three eyes could not be diagnosed because of obscure images. The agreement of diagnosis with SS-OCTA alone was high between the two specialists (κ = 0.82). CONCLUSION: SS-OCTA showed high sensitivity and specificity in the differentiation of nonpolypoidal MNV, PCV, type 3 MNV, and chronic CSC. The differential criteria based on SS-OCTA could be a substitute for the ICGA-based diagnoses.