NGHIÊN CỨU HÌNH ẢNH VÕNG MẠC VÙNG HOÀNG ĐIỂM BẰNG OCT SAU PHẪU THUẬT BONG VÕNG MẠC QUA HOÀNG ĐIỂM

Abstract

Purpose: To evaluate foveal anatomical abnormalities in OCT after the successful repair of rhegmatogenous retinal detachments (RRD) and analyze some correlated factors. Design: Prospective observational study. Methods: 31 eyes with macular off RRD have anatomically successful reattachment after the first surgery in Vietnam national institute of ophthalmology from January 2014 to July 2014 and duration of decrease visual acuity sign is (VA) ≤30 days. Complete medical and ophthalmic histories, BCVA, duration of symptoms, number of breaks, extent of the retinal detachment (RD), and type of surgery were recorded. All patients underwent clinical examination, optical coherence tomography (OCT) scan of the macula 6weeks, 3 months after surgery. OCT images were analyzed to find out foveal anatomical abnormalities. We also find some factors have relative correlated with these abnormalities. Results: Foveal anatomic abnormalities were detected in 12/31 eyes (38.7%), persistence of subretinal fluid (PSF) was the most frequent with 10/31 eyes (32.3%) and 9/31(29.1%) after 6 weeks and 3 months. BCVA of PSF group was lower than the remain group (p<0.05). All PSF eyes hadn’t BCVA >20/50 while 9/21 eyes (42.9%) after 6 weeks and 12/22 eyes (54.5%) after 3 months had BCVA >20/50. Mean postoperative BCVA (20/145 ± 20/132 versus 20/53 ± 20/32after 6 weeks; after 3 months 20/135 ± 20/132 versus 20/46 ± 20/35) (p<0.05) was significantly different among these subgroups. Patients treated after 3 days from the first decrease of VA had more abnormalities than the other (p<0.05). Conclusion: After anatomically successful RRD repair, OCT is shown as a useful noninvasive diagnostic to detect foveal anatomical abnormalities. These abnormalities have high value in explain and prognosis BCVA of patient. Early treatment can be helpful in decrease these abnormalities.