Scleral lenses for the management of corneal irregularities. Visual and aberrometric outcomes in Mexico.

Abstract

Purpose : To describe the performance of scleral lenses (SL) for visual rehabilitation in patients with corneal irregularities.

Methods : Retrospective review of clinical records of patients with corneal irregularities fitted with SL for visual rehabilitation. Data analyzed included demographics, medical history, spherical equivalent, keratometry measurements and SL parameters. Visual outcomes in logMAR and aberrometric parameters were assessed using paired t-tests before and after SL fitting. The level of statistical significance was taken as p < 0.05.

Results : Thirty-Three eyes of nineteen participants are included in this study. Mean age was 33.39±13.44 years. 64.71% were male. The most frequent diagnosis was keratoconus (66.67%), followed by irregular astigmatism either by corneal grafts or scarring and post-LASIK ectasia. History of corneal crosslinking and keratoplasty was present in 41.18% and 5.88% of the patients respectively. Mean spherical equivalent was -9.70 D, Mean K1 46.10±3.82 and K2 50.62±6.33 D. Mean SL base curve was 7.43 and a mean power of -7.51D, all SL had a 15 mm diameter. Mean logMAR VA significantly improved from 1.03±0.66 to 0.067±0.14 (p=0.0001). Total Root Mean Square (RMS) values reduced from 10.065 µm to 0.710 µm (p=0.03) measured after SL fitting. No complications associated with SL use were reported.

Conclusions : Scleral lenses are effective in improving quantitative and qualitative optimal visual function in patients with irregular corneas by improving visual acuity and reducing ocular aberrations.

This is a 2021 ARVO Annual Meeting abstract.