101. CAPILLARY NETWORK ALTERATIONS IN X-LINKED RETINOSCHISIS IMAGED ON OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
- Author
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Soon Wai Chʼng, Francesco Romano, Francesco Bandello, Elisabetta Martina, Alessandro Arrigo, Paulo E. Stanga, Maurizio Battaglia Parodi, Maria Pia Manitto, Romano, Francesco, Arrigo, Alessandro, Chʼng, Soon Wai, Battaglia Parodi, Maurizio, Manitto, Maria Pia, Martina, Elisabetta, Bandello, Francesco, and Stanga, Paulo E
- Subjects
Male ,Fovea Centralis ,medicine.medical_specialty ,Visual acuity ,Adolescent ,genetic structures ,Retinoschisis ,Capillary network ,Macular Degeneration ,Dorzolamide ,Foveal ,Ophthalmology ,medicine ,Humans ,Prospective Studies ,Child ,business.industry ,Retinal Vessels ,General Medicine ,Optical coherence tomography angiography ,medicine.disease ,eye diseases ,Capillaries ,Cross-Sectional Studies ,Child, Preschool ,Microvessels ,X-linked retinoschisis ,sense organs ,Tomography ,medicine.symptom ,business ,Tomography, Optical Coherence ,medicine.drug - Abstract
PURPOSE To assess foveal and parafoveal vasculature at the superficial capillary plexus, deep capillary plexus, and choriocapillaris of patients with X-linked retinoschisis by means of optical coherence tomography angiography. METHODS Six patients with X-linked retinoschisis (12 eyes) and seven healthy controls (14 eyes) were recruited and underwent complete ophthalmologic examination, including best-corrected visual acuity, dilated fundoscopy, and 3 × 3-mm optical coherence tomography angiography macular scans (DRI OCT Triton; Topcon Corp). After segmentation and quality review, optical coherence tomography angiography slabs were imported into ImageJ 1.50 (NIH; Bethesda) and digitally binarized. Quantification of vessel density was performed after foveal avascular zone area measurement and exclusion. Patients were additionally divided into "responders" and "nonresponders" to dorzolamide therapy. RESULTS Foveal avascular zone area resulted markedly enlarged at the deep capillary plexus (P < 0.001), particularly in nonresponders. Moreover, patients disclosed a significant deep capillary plexus rarefaction, when compared with controls (P: 0.04); however, a subanalysis revealed that this damage was limited to the fovea (P: 0.006). Finally, the enlargement of foveal avascular zone area positively correlated with a decline in best-corrected visual acuity (P: 0.01). CONCLUSION Prominent foveal vascular impairment is detectable in the deep capillary plexus of patients with X-linked retinoschisis. Our results correlate with functional outcomes, suggesting a possible vascular role in X-linked retinoschisis clinical manifestations.
- Published
- 2019