Tran B-K, Herbort C P
Inflammatory and Retinal Eye Diseases, Centre for Ophthalmic Specialised Care, Lausanne, Switzerland.
Klin Monbl Augenheilkd. 2015 Apr;232(4):529-32. doi: 10.1055/s-0035-1545779. Epub 2015 Apr 22.
Best corrected visual acuity (BCVA) of 0.8 or above in AMD patients can sometimes correspond to poor macular function inducing a serious visual handicap. Microperimetry can be used to objectivize this difference.
A retrospective study was undertaken on 233 files of AMD patients of whom 82 had had a microperimetry. BCVA was compared with microperimetry performance. All examinations were performed in an identical setting by the same team of 3 persons.
Among the 82 patients included, 32 (39.0%) had a BCVA equal to or above 0.8 even though their microperimetry performance was lower than 200/560 db. 10 of them (12.2% of total) had an even poorer microperimetry below 120/560 db indicating poor macular function.
More than a third of the AMD patients had a bad or very bad microperimetry performance in parallel with a good visual acuity. Microperimetry is a valuable tool to assess and follow real macular function in AMD patients when visual acuity alone can be misleading.
年龄相关性黄斑变性（AMD）患者中，最佳矫正视力（BCVA）达到0.8或以上时，有时可能对应着较差的黄斑功能，从而导致严重的视力障碍。微视野计可用于客观地呈现这种差异。
对233例AMD患者的病历进行回顾性研究，其中82例进行了微视野计检查。将BCVA与微视野计检查结果进行比较。所有检查均由同一3人团队在相同环境下进行。
在纳入的82例患者中，32例（39.0%）的BCVA等于或高于0.8，尽管他们的微视野计检查结果低于200/560分贝。其中10例（占总数的12.2%）的微视野计检查结果更差，低于120/560分贝，表明黄斑功能较差。
超过三分之一的AMD患者在视力良好的同时，微视野计检查结果不佳或非常差。当仅依靠视力可能产生误导时，微视野计是评估和跟踪AMD患者实际黄斑功能的有价值工具。
