PermaVision intracorneal lens for the correction of hyperopia

Abstract

Purpose: To evaluate the safety, predictability, and efficacy of sutureless synthetic keratophakia (SSK) with PermaVision® intracorneal lens (Anamed) implantation. Setting: Ophthalmic Hospital, Rome, Italy. Methods: This retrospective study analyzed the refractive outcomes in 10 eyes of 6 patients who had SSK with PermaVision lens implantation for spherical hyperopia (cylinder less than 1.0 diopter [D]). Preoperatively, the mean spherical equivalent (SE) refraction was +4.33 D ± 1.52 (SD) (range +3.00 to +6.37 D). All procedures were performed using the Hansatome® microkeratome (Bausch & Lomb) with a superior hinge except in 1 eye in which the flap was cut using the Amadeus® microkeratome (Allergan) with a nasal hinge. Results: Six months after PermaVision lens insertion, the mean SE refraction was +0.03 ± 0.36 D (range −0.50 to +0.38 D), the mean uncorrected visual acuity was 0.85 ± 0.13 (range 0.63 to 1.00), and the mean best corrected visual acuity was 0.99 ± 0.19 (range 0.63 to 1.25). No eye lost lines of visual acuity. In 1 eye, the lens was acutely decentered and had to be explanted. Conclusions: Sutureless synthetic keratophakia with the PermaVision intracorneal lens is a new technique for the correction of hyperopia. It is easy to perform as well as reversible, and the learning curve of the experienced laser in situ keratomileusis surgeon is short. The technique was safe and effective for spherical hyperopia, but longer follow-up and additional cases are needed to draw conclusions about the efficacy of the technique.