Examination and analysis of diabetic optic neuropathy after cataract surgery

Abstract

Objective To analyse the characteristics of diabetic optic neuropathy (DON) in cataract patients with diabetes by using fluorescein fundus angiography (FFA), optical coherence tomography (OCT), visual evoked potential (VEP) and perimetry examination. Methods A total of 235 eyes of 125 cataract patients with diabetes were included in the study. These patients received cataract surgery and performed with FFA, OCT, VEP and perimetry examination postoperatively. The examination results and clinical characteristics of diabetic retinopathy (DR) and DON were analyzed. Results Seventy eyes (29.8%) were diagnosed with DR, 75 eyes(31.9%) were diagnosed with DON. FFA in DON patients showed macular edema, optic disc edema, filling defect and optic disc neovascularization. OCT mainly showed macular edema, thickening or atrophy. VEP mainly showed prolonged P100 wave latency or decreased wave amplitude. Perimetry examination showed various kinds of insults. Conclusion DR and DON show a high occurrence rate in diabetes mellitus patient with cataract. FFA plays a key role in the early diagnosis of DR and DON. Retinal ganglion cells are damaged in patients with early DR. Key words: Optic neuropathy, diabetic; Examination, postoperative, cataract; Fundus fluorescein angiography; Optical coherence tomography; Visual evoked potential