每个眼科患者都应作视力检查,视力低于0.02者,则须以辨认手指数目或手的摆动代之,此时,还要进一步检查光感、光定位功能和色觉,这对眼底不能窥见的屈光质明显混浊者视网膜的功能评估,以决定治疗之取舍(如白内障术前)尤有价值。 Every ophthalmic patient should make a visual inspection. If the visual acuity is less than 0.02, the number of fingers or the hand swinging must be identified. At this moment, the light sensation, the light positioning function and the color vision should be checked further, which can not see the fundus Of the retina whose ophthalmologic manifestations are clearly opaque, are of special value in deciding on the treatment options (such as preoperative cataract).