Histology of rabbit corneas after 10-diopter photorefractive keratectomy for hyperopia.

Purpose: To measure histological changes in the optical and transition zones of rabbit corneas treated with excimer laser photorefractive keratectomy (PRK) to correct hyperopia and to estimate the optical effect of these changes on the induced power profile.

Methods: Corrections of +10.00 D were ablated by means of a Questek 2620 excimer laser and rotational masks on 8 rabbit eyes.

Topography of rabbit corneas after photorefractive keratectomy for hyperopia using airborne rotational masks.

Purpose: To determine the long-term outcome of photorefractive keratectomy (PRK) for hyperopia on the rabbit cornea using ablation profiles with a smooth transition zone.

Methods: Two profiles were ablated by means of an excimer laser and rotational masks, each profile on four rabbit eyes. Corrections of +10 diopters (D) were planned in all operations.

On the safety of 193-nanometer excimer laser refractive corneal surgery.

Current literature on the potential hazards of 193-nanometer excimer laser corneal surgery is reviewed. The healing process of the different layers involved in the procedure is examined. The epithelium regenerates without delay or abnormal adhesion.

[Colobomatous pits and serous macular detachment].

Several congenital anomalies of the optic disc are associated with serous detachment of the macula or retinal detachment. Treatment of this condition, and hallmarks of disc and systemic anomalies are discussed.