论文部分内容阅读
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.
Methods: A prospective study was ca rried out involving patients who under under bilateral (LASIK) for myopia. 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 (ange 6.32 to-12.0 D) preoperatively, and- 1.69 D (range 0 to-4.38 D We found as ignificant correlation between large scotopic pupil sizes and the impression of worsened night vision (P <0.01). A signif icant 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.