Intermediate vision and reading speed with array, Tecnis, and ReSTOR intraocular lenses.

PURPOSE: To retrospectively evaluate reading performance at intermediate distances of three types of multifocal intraocular lenses (IOLs) under different light conditions based on reading acuity and reading speed tests. METHODS: Thirty cataract patients (60 eyes) randomly assigned to receive the Array SA40N lens (n = 20 eyes), the Tecnis ZM001 lens (n = 20 eyes), and the ReSTOR lens (n = 20 eyes) were retrospectively tested for their reading abilities at distances of 40 cm, 60 cm, and 80 cm under low light conditions (6 cd/m2) and bright light conditions (100 cd/m2). RESULTS: LogMAR distance-corrected acuity in dim (bright) light at 40 cm was 0.456 (0.363) (Array), 0.446 (0.293) (ReSTOR), and 0.299 (0.140) (Tecnis); at 60 cm, it was 0.417 (0.259) (Array), 0.448 (0.318) (ReSTOR), and 0.381 (0.121) (Tecnis); at 80 cm, it was 0.359 (0.195) (Array), 0.395 (0.245) (ReSTOR), and 0.373 (0.124) (Tecnis). Uncorrected reading speed (words/min) in dim (bright) light at 40 cm was 25 (69) (Array), 58 (138) (ReSTOR), and 110 (166) (Tecnis); at 60 cm, it was 65 (129) (Array), 58 (129) (ReSTOR), and 135 (173) (Tecnis); and at 80 cm, it was 59 (153) (Array), 79 (164) (ReSTOR), and 121 (176 (Tecnis). CONCLUSIONS: Our study indicates that Array, ReSTOR, and Tecnis IOLs provide functional intermediate vision in bright light. In dim light, however, the Tecnis IOL provides better uncorrected reading speed at intermediate distances than Array and ReSTOR IOLs.

Reading ability with 3 multifocal intraocular lens models.

PURPOSE: To prospectively evaluate reading performance with of 3 types of multifocal intraocular lenses (IOLs) under different lighting conditions based on reading acuity and reading speed tests. SETTING: Augenklinik, Bad Hersfeld, Germany. METHODS: This randomized study comprised 60 cataract patients (120 eyes) randomly assigned to receive an SA40N IOL (AMO) (Group 1, 20 patients), Tecnis ZM001 IOL (AMO) (Group 2, 20 patients), or AcrySof ReSTOR SA60D3 IOL (Alcon) (Group 3, 20 patients). Pupil size and reading ability at near (visual acuity, reading speed) without correction, with best distance correction, and with best near correction were assessed 6 weeks postoperatively under low-light conditions (6 cd/m(2)) and bright-light conditions (100 cd/m(2)) using the Radner Reading Charts. RESULTS: Six weeks postoperatively, there was no significant difference between groups in pupil size measured under low-light (6 cd/m(2)) or bright-light (100 cd/m(2)) conditions. When assessed under low-light conditions, near visual acuity and reading speed with or without correction were generally better in Group 2 than in Groups 1 and 3; there were no significant difference between Groups 1 and 3. Under bright-light conditions, Groups 2 and 3 performed significantly better than Group 1 and Group 2 performed better than Group 3. CONCLUSIONS: Under bright-light conditions, second-generation multifocal IOLs provided better reading performance than the Array SA40N IOL. However, when tested under low-light conditions, patients with the Tecnis ZM001 IOL had the best reading acuity and reading speed.