Refractive Outcomes Of Trifocal Intraocular Lenses Following Corneal Laser Refractive Surgery

To describe outcomes of trifocal lenses inserted post-keratorefractive surgery.

A publicly funded hospital and a private clinic in Adelaide, South Australia.

Retrospective case series. All eyes that underwent cataract surgery with a history of keratorefractive surgery and had trifocal lenses implanted were identified. IOLMaster 700 keratometric astigmatism was adjusted for posterior corneal and other non-corneal astigmatic effects with the Goggin Nomogram and toric IOL powers were established by two hypothetical spherical IOL calculations using the ASCRS post-keratorefractive IOL calculator using adjusted keratometric values provided by the Goggin Nomogram. The ASCRS post-keratorefractive IOL calculator was used for non-toric lenses. All eyes were implanted with the same toric or non-toric trifocal lens.

A total of 26 eyes from 20 patients were identified. 15 eyes had toric trifocal lenses implanted (58%). 10 (38%) had previous myopia and the rest hyperopia. The mean absolute prediction error for spherical equivalent (SE) refraction was 0.22D ± 0.20 D with 24 eyes (92%) measuring within 0.50D of the SE target. All eyes were within 0.75D of the SE target. Postop mean logMAR uncorrected distance acuity was 0.00 ± 0.12.

Refractive outcomes of eyes receiving trifocal lenses following excimer laser are on par with eyes not previously treated with excimer laser.