PURPOSE To investigate the changes in the near reading speed after panretinal photocoagulation (PRP) in diabetic retinopathy patients. METHODS This non-randomized, prospective, clinical study enrolled diabetic retinopathy patients who underwent PRP from January 2016 to June 2017. The near reading speed was measured before and 1 week, 1 month, and 4 months after PRP by using an iPad application for the assessment of reading speed; near best-corrected visual acuity (BCVA) and subfoveal choroidal thickness (SFCT) were also analyzed. The reading speed of age-matched healthy individuals was compared with that of diabetic retinopathy patients. RESULTS Forty-seven patients were enrolled in this study. The baseline near reading speed of diabetic retinopathy patients was significantly slower than that of age-matched healthy controls. The near reading speed was reduced at 1 week after PRP, but recovered at 1 and 4 months after PRP. Near BCVA showed a similar pattern after PRP. SFCT increased at 1 week after PRP and significantly decreased at both 1 and 4 months after PRP. CONCLUSION The near reading speed of diabetic patients was significantly slower than that of age-matched healthy controls. The speed was temporarily reduced at 1 week after PRP, potentially due to short-term impairment of parasympathetic nerve innervation.

中文翻译：

---

糖尿病性视网膜病变患者全视网膜光凝后的近阅读速度变化：一项使用iPad应用程序测量阅读速度的前瞻性研究。

目的探讨糖尿病性视网膜病患者全视网膜光凝（PRP）后近阅读速度的变化。方法这项非随机，前瞻性临床研究纳入了2016年1月至2017年6月接受PRP的糖尿病视网膜病变患者。通过使用iPad应用程序测量PRP之前和之后1周，1个月和4个月的近距离阅读速度。评估阅读速度；还分析了近最佳矫正视力（BCVA）和小凹脉络膜厚度（SFCT）。将年龄匹配的健康个体的阅读速度与糖尿病性视网膜病患者的阅读速度进行比较。结果本研究纳入了47名患者。糖尿病性视网膜病患者的基线近读速度明显慢于年龄匹配的健康对照者。在PRP后1周，近读速度降低，但在PRP后1和4个月恢复。PRP后，接近BCVA表现出相似的模式。SFCT在PRP后1周增加，在PRP后1和4个月显着下降。结论糖尿病患者的近距离阅读速度明显慢于年龄匹配的健康对照者。在PRP后1周，速度暂时降低，这可能是由于副交感神经支配的短期损害所致。