Clinical Outcomes Of A Full Range Of Vision Intraocular Lens Utilizing Spiral Optics

To evaluate the clinical outcomes and patient satisfaction of a new intraocular lens (IOL) with spiral optics

Tan Tock Seng Hospital, Singapore

A prospective study of 20 eyes from 10 patients who underwent uncomplicated cataract surgery with implantation of the Galaxy IOL (Rayner, United Kingdom). Pre-operative biometric measurements from the IOL Master 700 were obtained, and post-operative results at 1-2 months were obtained. Outcome measures were uncorrected distance visual acuity (UCDVA), uncorrected intermediate visual acuity (UCIVA), uncorrected near visual acuity (UCNVA), distance-corrected visual acuity (DCVA), distance-corrected intermediate visual acuity (DCIVA) and distance-corrected near visual acuity (DCNVA). Monocular and binocular defocus curves, contrast sensitivity testing, glare and halo simulator testing and the VF-14 questionnaire were administered. 

13 toric and 7 non-toric IOLs were implanted. 90% of patients attained a UCDVA of 0.2 logMAR or better and a DCVA of 0.1 logMAR or better. The defocus range was 2.2D and 2.8D within 0.2 logMAR for monocular and binocular testing respectively. Formula predictability was excellent, with mean absolute error (MAE) for spherical equivalent of 0.195 for the EVO and 0.220 for the Barrett formulas. Astigmatic correcion was also good with a mean IOL rotation of 2.9 degrees (range 0 to 11 degrees), an MAE of 0.452 with the EVO toric formula and a statistically significant reudction in cylinder (p<0.01). 30% of patient had no photic phenomena. 30% had mild and 40% moderate glare and haloes, while none reported severe dysphotopsia.  

The Galaxy IOL offers excellent range of vision, good predictability, rotational stability, a favorouble dysphotopsia profile and high patient satisfaction.