Modified grid laser photocoagulation for diabetic macular edema. The effect on the central visual field.
Modified grid laser photocoagulation for diabetic macular edema. The effect on the central visual field.
复制标题
DOI：
10.1016/s0161-6420(88)32957-x
复制
发表时间：
1988-12
期刊：
影响因子：
13.7
通讯作者：
G. Striph;William M. Hart;R. Olk
中科院分区：
文献类型：
--
作者：
G. Striph;William M. Hart;R. Olk
改良格栅状激光光凝术已被证明可以稳定糖尿病黄斑水肿患者的视力，但对中心凹外视功能的影响尚不确定。本文对36例64只眼用氩绿色或氪红激光行改良格栅治疗前后进行了自动静态阈值视野检查。28只眼睛接受了持续性黄斑水肿的两个网格治疗。对于所有受试眼，第一次治疗后中央5°的平均阈值灵敏度下降3.44 dB（标准差[SD]，3.79 dB），第二次治疗后累积下降6.86 dB（SD，5.02 dB）。质量，。治疗后中心视野灰度显示较暗，但激光光凝所致暗点与黄斑水肿所致暗点无法区分。中心凹阈值没有显着变化。在一个接受测试的患者亚组中，色觉没有显著改善，几乎所有患者在治疗前后都表现出tritan缺陷。氩气组和氪气组之间无差异。这表明，使用改良的格栅激光光凝，以视野中央10°范围内阈值灵敏度的普遍丧失为代价，保留了视力和中央凹阈值。
Modified grid laser photocoagulation has been shown to stabilize visual acuity in patients with diabetic macular edema, but the effect on extrafoveal visual function is uncertain. Automated static threshold perimetry was performed on 64 eyes of 36 patients before and after modified grid therapy with the argon green or krypton red laser. Twenty-eight eyes underwent two grid treatments for persistent macular edema. For all eyes tested, average threshold sensitivity in the central 5° dropped 3.44 dB (standard deviation [SD], 3.79 dB) after the first treatment and 6.86 dB (SD, 5.02 dB) cumulatively after the second treatment. Qualitatively,. the grayscale displays of the central visual field were darker after treatment, but the scotomata from laser photocoagulation could not be distinguished from those due to macular edema. The foveal threshold showed no significant change. In a subgroup of patients tested, color vision was not significantly improved and nearly all patients exhibited a tritan defect before and after treatment. No difference was detected between the argon and krypton groups. This suggests that with modified grid laser photocoagulation visual acuity and foveal threshold are preserved at the expense of generalized loss of threshold sensitivity across the central 10° of the visual field.