球后视神经炎的游标高敏视力特征

目的:探讨球后视神经炎游标高敏视力的临床特征及其在临床诊断、治疗中的应用价值。方法:采用自行研究设计的游标高敏视力检查系统软件,对15例25只眼(急性球后视神经炎6例8只眼;慢性球后视神经炎9例17只眼)球后视神经炎患者治疗期间进行动态游标高敏视力检查,受检者按要求判断计算机显示屏上活动光标与固定光标的相对位置关系,并通过移动轨迹球调整光标,计算机自动分析活动光标和固定光标位置之偏差,得出平均阈值及其变异度。结果:球后视神经炎急性期的游标高敏视力阈值及其变异度与正常值相比差异有非常显著性(P<0.01);恢复期差异有显著性(P<0.05)。球后视神经炎急性期视力与游标高敏视力阈值的相关系数为-0.88(P<0.01);与阈值变异度的相关系数为-0.46(P<0.05)。球后视神经炎恢复期,游标高敏视力的阈值及其阈值变异度与急性期相比差异有非常显著性(P<0.01)。恢复期游标阈值与恢复期视力的相关系数为-0.93(P<0.01);阈值变异度与恢复期视力的相关系数为-0.84(P<0.01)。急性期游标阈值与恢复期游标阈值经相关性分析,其相关性无统计学意义(P=0.261);急性期视力与恢复期视力的相关性亦无统计学意义(P=0.11);急性期阈值变异度与恢复期阈值变异度的相关系数为0.67(P<0.01)。急性期游标阈值与恢复期游标阈值、

The Characteristic of Vernier Acuity on Retrobulbar Neuritis Patients

Purpose: To investigate the clinical characteristic of vernier acuity in retrobulbar neuritis patients. Methods:The vernier acuity test soft wear system was developed to detect the 15 cases (25 eyes) with retrobulbar neuritis patients. There were 8 eyes of 6 cases with acute retrobulbar neuritis and 17 eyes of 9 cases with chronic retrobulbar neuritis. Subjects' age ranged from 11 to 58 (mean=25.87). There were 14 eyes of 7 cases male and 11 eyes of 8 cases female. The best visual acuity ranged from 0.05 to 0.7. Two fixed targets and a movable target are shown on the computer screen. The examine was asked to adjust the position of the central target and the relationship between it and align them by using a track-ball. The computer automatically records the deviations of distances between the movable target and the specific one, and computes the average threshold and its variance. Results:There was significant statistical difference in the vernier threshold and its variance between the normal subjects and patients with retrobulbar neuritis in acute stage or convalescence. The correlation coefficient between visual acuity and vernier acuity threshold was -0.88 in the patients with retrobulbar neuritis in acute stage of neuritis (P<0,01). The correlation coefficient between visual acuity and threshold variance was -0.46(P<0.05). In convalescence, with an improvement of the disease and the increase of visual acuity,the vernier acuity threshold decreased and the threshold variance reduced. The difference of threshold and its variance between acute stage and convalescence had statistical signification (P<0.01). The correlation coefficients between visual acuity and vernier acuity threshold was -0.93 in convalescence (P<0.01). The correlation coefficients between visual acuity and vernier threshold variance was -0.84(P<0.01) in convalescence. No significant statistical difference was found in the correlation between the vernier threshold in acute stage and in convalescence (P=0.261). No significant statistical difference was found in the correlation between visual acuity in acute stage and in convalescence (P=0.11). The correlation coefficients between vernier threshold variance in acute stage and in convalescence was -0.67 (P<0.01). There was statistical difference among the difference of threshold , visual acuity and standard deviation between acute stage and convalescence respectively (West, P<0.01). Conclusions:It is suggested that vernier acuity, which changed with the state of the disease,was one of the indexes to evaluate the visual function of patients with retrobulbar neuritis. It could be use as an observation index of supervising the change of patients' visual function and the reaction to medication and guiding medication. Eye Science 2003 ;19:104-106.