中心性漿液性脈絡網膜病症者的對比敏感機能之研究

Contrast Sensitivity in Central Serous Chorio-Retinopathy

吳國揚(Kwou-Yeung Wu) ； 陳振武(Chen-Wu Chen) ； 黃文龍(Wen-Long Huang) ； 吳文權(Wen-Chyuan Wu) ； 鄭淑珠(Shwu-Ju Jeng)

《中華民國眼科醫學會會刊》 25卷2期 (1986/05) Pp. 656-662

https://doi.org/10.30048/ACTASOS.198605.0115

摘要

收集31位視力在0.9以上的中心性漿液性脈絡網膜症患者，年齡介於33至54歲之間，男30位女1位，左17眼右14眼共31眼，以VCTS 6500型測定並統計其對比敏感機能，結果顯示其對比敏感曲線與正常人比較呈水平喪失(level loss)之現象，亦即在所有測定之間隔頻率(1.5-18 cycles/degree)皆呈有意義的降低。31眼中再根據黃斑部浮腫之有無分為兩組，統計分析其對比敏感機能得知，有黃斑部浮腫的6眼呈現更大的水平喪失曲線，而無黃斑部浮腫之25眼僅呈現中間及高間隔頻率的降低，故推論得知中心性漿液性脈絡網膜症者在癒後雖然傳統視力已恢復正常以上，但對比敏感機能仍然不正常，其中以中間及高間隔頻率恢復較慢。同時亦可知對比敏感機能測定比傳統視力測定在某些疾病來得敏感。

並列摘要

Contrast sensitivity functions were measured, by using VCTS 6500, in 31 patients with monocular central serous chorioretinopathy and in normal controls. All of the sick eyes had visual acuity of 0.9 or better. The mean contrast sensitivity curve of 3 1 eyes revealed a level loss type characterized by a statistically significant loss for all presented spatial frequencies (1.5, 3, 6, 12 and 18 cycles/degree). Six eyes of CSCR with macular edema had a more marked level loss curve in contrast sensitivity, while 25 eyes of CSCR without macular edema showed a intermediate and high spatial frequencies loss pattern. Our findings revealed patients with CSCR had abnormal contrast sensitivity function in both acute and recovery stage despite normal Landolt acuities. Thus, the measurement of contrast sensitivity seems more sensitive than the conventional test of visual acuity in some ocular diseases.

並列關鍵字

central serous chorioretinopathy CSCR ； contrast sensitivity function ； spatial frequency