Factors Predisposing To Good Near Visual Acuity After Aspheric ReSTORⓇ Intraocular Lens Implantation

1. Tae Jin Yoon
2. Young Hwan Eum

Shin Sae Gea Eye Clinic, Ulsan, Korea

Purpose: To determine prognostic factors for near visual acuity of 20/50 or better after implantation of aspheric ReSTORⓇ IOL for cataract.

Methods: 207 eyes of 136 patients that received phacoemulsification and implantation of ReSTOR® IOL from Shin-Se-Gae eye clinic of Korea were enrolled in this study. The Clinical features including age, sex, axial length, preoperative corneal astigmatism, preoperative spherical equivalent, 6 months postoperative uncorrected near visual acuity (UCNVA) and uncorrected distance visual acuity (UCDVA) were investigated. 207 eyes were divided into 2 groups according to 6 months postoperative UCNVA by Jaeger chart. : 20/50 or better (Group 1 is presented by ¹) and less than 20/50 (Group 2 is presented by ²). The statistical significance of differences in the clinical features between 2 groups was calculated.

Results and Conclusion: 196 (94.7%) of the eyes was Group 1 and 11 (5.3%) of the eyes was Group 2. The mean 6 months postoperative UCNVA was 0.70±0.16 (0.17±0.11 LogMAR unit)¹ and 0.25±0.05 (0.61±0.09 LogMAR unit)². The mean 6 months postoperative UCDVA was 0.88±0.19 (0.07±0.14 LogMAR unit)¹ and 0.49±0.07 (0.31±0.07 LogMAR unit)². The mean age was 50.3±8.2¹ and 55.3±5.5². The mean preoperative corneal astigmatism was 0.6±0.5¹ and 1.07± 0.6² diopter. The mean axial lengths was 24.54±1.69¹ and 24.35±1.52² mm. Analysis revealed that patients in group 1 were younger, and had lesser corneal astigmatism (P<0.05). The patients who would be inserted by ReSTOR® IOL are more likely to achieve UCNVA of 20/50 or better if they are younger, and have lesser preoperative corneal astigmatism.