特发性黄斑视网膜前膜的立体视功能

Stereoscopic vision of idiopathic macular epiretinal membranes

目的:探讨特发性黄斑视网膜前膜的立体视功能状况。方法:检测特发性黄斑视网膜前膜71例96眼的视力、视物变形情况,采用同视机随机点图检测患者同时视和融合功能及远立体视功能,采用颜氏随机点《立体视觉检查图》和Titmus立体视觉检查图检测患者的近立体视功能;资料采用SPSS11.0软件统计分析。结果:采用最小角度对数视力统计患眼的平均LogMAR视力为(0.15±0.21),较非IMEM眼的平均LogMAR视力(0.03±0.09)低下,差异有显著性(P=0.00)。采用Amsler卡检查发现49%(47/96)的患眼有视物变形;4眼有阳性暗点。71例患者均保留双眼同时视知觉和融合功能;立体视功能检测发现15例(21%)患者的各项立体视功能均正常,其中远立体视锐度正常25例(35%),近立体视锐度正常22例(31%),立体视范围正常15例(21%)。56例(79%)患者的远近各项立体视功能中有1项或2项及以上的指标异常。其立体视功能正常与否与视力良莠和两眼视力差等因素有关。结论:随着病情进展IMEM患眼的视力下降,视物变形加重,并且立体视功能可受到不同程度的损伤。

AIM： To evaluate the stereoscopic vision in patients with idiopathic macular epiretinal membrane （IHEH）. METHODS： LogMAR visual acuity, metamorphopsia （Amsler chart） and stereoacuity in 71 patients （96 eyes） with idiopathic IMEM （IIMEM） were evaluated. Random dot stereotest was used to measure simultaneous perception, fusion and distance stereopsis.Titmus and Randot tests were used to measure near stereopsis. Data were analyzed by SPSS11.0 software. RESULTS： Visual acuity of the IMEH eyes ranged from 0.15 to 1.2. LogMRA visual acuity of affected eyes were significantly lower than that in normal eyes （0.15± 0.21 vs -0.03± 0.09）. Metamorphosis were observed in 4.9% IMEM eyes （47196 eyes）. Scotomas were found in 4. IMEM eyes. All the cases have normal simultaneous perception and fusion function. Complete normal stereopsis was found in 15 cases （21%）, normal distance stereopsis in 25 cases （35%）, normal near stereopsis in 22 cases （31%） and any abnormal near/distance stereopsis in 56 cases （79%）. Status of stereopsis was related to visual acuity and VA difference between two eyes. CONCLUSION： With the deterioration of IMEM in affected eyes, visual acuity decreases, metamorphopsia increases, and stereopsis function is affected to various extents.