Outcomes Of The Tecnis Eyhance Intraocular Lens Implant In Eyes With Previous Radial Keratotomies

To assess the real-world visual outcomes of the TECNIS Eyhance intraocular lens implant (IOL) in eyes with previous radial keratotomies.

Single centre, multiple surgeon, private practice, London, UK 

A retrospective case series was performed of prior radial keratotomy eyes implanted with the TECNIS Eyhance IOL for refractive lens exchange or cataract surgery. The ASCRS calculator was used for prior radial keratotomies and the Average IOL power selected. Visual and refractive outcomes were assessed at 6 months post-operatively.

9 eyes of 7 patients were implanted with the Eyhance IOL. Mean age was 57 years old (range 51-64). Mean number of radial keratotomy cuts was 8 (range 4-12). In the 4 eyes targeted for emmetropia (0 – -0.5D) mean uncorrected distance visual acuity (UDVA) was 0.05 ±0.21 LogMAR and uncorrected near visual acuity (UNVA) 0.43 ±0.21 LogMAR. In the 5 eyes targeting myopia (-0.75 – 3.0 D) UNVA was 0.28 ±0.11 LogMAR. One eye lost one line of best corrected vision. Mean deviation from planned spherical equivalent refraction was -0.38±1.11 D. 66.7% of eyes were within 0.5D of intended target refraction and 88.9% within 1D. Patients experienced no significant haloes or glare. 2 patients reported night vision was less clear post-operatively.

The Eyhance IOL was well tolerated by the patients in this cohort previously treated with radial keratotomies. It provided an increased range of distance and near vision. No IOL exchanges were required. The refractive accuracy was acceptable when used with the prior radial keratotomy ASCRS calculator. The negative spherical aberration of the TECNIS Eyhance IOL may be beneficial in radial keratotomy eyes which tend to be positively spherically aberrated.