Changes in spherical aberration after various corneal surface ablation techniques.

Purpose: The corneal change induced by refractive procedures influence both the postoperative refractive status and the ocular spherical aberration (SA). We evaluated changes in corneal SA after three types of surface ablation: phototherapeutic keratectomy (PTK), myopic photorefractive keratectomy (PRK), and myopic wavefront-guided laser epithelial keratomileusis (LASEK).

Methods: Twenty-six eyes (25 patients) were subjected to PTK 26 eyes (14 patients) to PRK, and 34 eyes (17 patients) to wavefront-guided LASEK.

Combination of laser photocoagulation and intravitreal bevacizumab (Avastin) for aggressive zone I retinopathy of prematurity.

Background: This report describes the use of combined laser photocoagulation and intravitreal bevacizumab administration for aggressive zone I retinopathy of prematurity (ROP).

Methods: A male patient, born at 25 weeks gestation with a birth weight of 884 g, received indirect laser photocoagulation and a 0.75 mg intravitreal bevacizumab injection to each eye for aggressive stage 3 zone I ROP.