近视患者LASIK术后瞳孔大小与夜视功能障碍  

Pupil size and night vision disturbances after LASIK for myopia

作　　者：Helgesen A. Hjortdal J. Ehlers N. 秦雪娇 

机构地区：[1]Eye Department,úrhus Kommuneh ospital, Nrrebrogade 44, 8000 úrhus C, Denmark

出　　处：《世界核心医学期刊文摘（眼科学分册）》2005年第2期9-10,共2页Digest of the World Core Medical Journals:Ophthalmology

摘　　要：Purpose: To examine whether standardized, preoperative evaluation of pupil siz es can predict the risk of night vision visual disturbances after bilateral lase r in situ keratomileusis (LASIK) for myopia. Methods: A prospective study was ca rried out involving 46 patients who underwent bilateral LASIK for myopia. Pupil sizes were measured before surgery using an infrared pupillometer under standard ized settings. Pre-and postoperative refraction and best spectacle-corrected v isual acuity (BSCVA) were registered. At the 3-month follow-up visit, the pati ents completed a questionnaire regarding night vision pre-and postoperatively. Results: The mean bilateral, spherical equivalent refraction (SE) was-8.76 D (r ange 6.32 to-12.0 D) preoperatively, and-1.69 D (range 0 to-4.38 D) postopera tively. The mean bilateral BSCVA was not changed by the operations. We found a s ignificant correlation between large scotopic pupil sizes and the impression of worsened night vision (P < 0.01). A significant correlation between gender (male s) and subjectively reduced night vision postoperatively was also found (P < 0.0 5). Conclusion: Large pupil size measured preoperatively is correlated with an i ncreased frequency of subjectively experienced post-LASIK visual disturbances d uring scotopic conditions. We recommend preoperative evaluation of pupils size in all patient s prior to LASIK surgery.Purpose: To examine whether standardized, preoperative evaluation of pupil siz es can predict the risk of night vision visual disturbances after bilateral lase r in situ keratomileusis (LASIK) for myopia. Methods: A prospective study was ca rried out involving 46 patients who underwent bilateral LASIK for myopia. Pupil sizes were measured before surgery using an infrared pupillometer under standard ized settings. Pre-and postoperative refraction and best spectacle-corrected v isual acuity (BSCVA) were registered. At the 3-month follow-up visit, the pati ents completed a questionnaire regarding night vision pre-and postoperatively. Results: The mean bilateral, spherical equivalent refraction (SE) was-8.76 D (r ange 6.32 to-12.0 D) preoperatively, and-1.69 D (range 0 to-4.38 D) postopera tively. The mean bilateral BSCVA was not changed by the operations. We found a s ignificant correlation between large scotopic pupil sizes and the impression of worsened night vision (P < 0.01). A significant correlation between gender (male s) and subjectively reduced night vision postoperatively was also found (P < 0.0 5). Conclusion: Large pupil size measured preoperatively is correlated with an i ncreased frequency of subjectively experienced post-LASIK visual disturbances d uring scotopic conditions. We recommend preoperative evaluation of pupils size in all patient s prior to LASIK surgery.

关 键 词：视功能障碍 LASIK术 瞳孔大小 平均屈光度 矫正视力 大瞳孔 预测术 量仪 标准设置 

分 类 号：R779.63[医药卫生—眼科]