Rotational stability of 2 intraocular lenses with an identical design and different materials.

PURPOSE:To evaluate the rotational stability of nontoric intraocular lenses (IOLs) of the same design and different materials. SETTING:Vienna Institute for Research in Ocular Surgery, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria. DESIGN:Prospective randomized case series. METHODS:This study included cataract patients with a corneal astigmatism of less than 1.75 diopters measured with the IOLMaster 500. Each patient received a hydrophilic IOL (Pod Ay 26P) in 1 eye and a hydrophobic IOL (Podeye) in the other eye. One hour and 3 months postoperatively, retroillumination photographs were taken to assess rotational stability of the IOLs. In addition, autorefraction, subjective refraction, and Purkinje meter measurements were performed at the 3-month follow-up. RESULTS:Eighty eyes of 40 patients were included in this study. Three months postoperatively, the IOL rotation within the first 3 months was 2.4 degrees ± 1.85 (SD) in the hydrophilic IOL group and 1.6 ± 1.61 degrees in the hydrophobic IOL group. This difference was statistically significant (P = .016). CONCLUSION:The hydrophobic IOL was rotationally more stable than the hydrophilic IOL, although both IOLs provided good capsular bag stability.