Posterior pole retinal thickness in ocular hypertension and glaucoma: early changes detected by hemispheric asymmetries.

Purpose: To evaluate retinal thickness at the posterior pole of the fundus in ocular hypertension (OHT) and open-angle glaucoma (OAG), and to correlate morphometric findings with visual sensitivity as determined by automated perimetry.

Methods: One randomly selected eye from 41 patients with clinical diagnosis of OHT (n = 25) or early to moderate OAG (n = 16) and 16 age-matched normal controls was examined. Retinal thickness was measured by Retinal Thickness Analyzer (RTA), acquiring 5 pre-defined scans covering the central 20 degrees of the fundus.

Comparison of wavefront aberration changes in the anterior corneal surface after laser-assisted subepithelial keratectomy and laser in situ keratomileusis: preliminary study.

Purpose: To compare changes in anterior corneal wavefront aberrations after myopic laser-assisted subepithelial keratectomy (LASEK) and laser in situ keratomileusis (LASIK).

Setting: Institute of Ophthalmology, Catholic University, Rome, Italy.

Methods: This prospective study included 36 eyes of 25 myopic patients: 18 eyes of 12 patients had LASEK and 18 eyes of 13 patients, LASIK.

Tonometric changes of latanoprost-induced intraocular pressure reduction after photorefractive keratectomy.

Purpose: To assess whether tonometric measurements of the drop in intraocular pressure (IOP) induced by 0.005% latanoprost are modified after photorefractive keratectomy (PRK).

Methods: Data from 24 randomly selected eyes of 24 patients (12 men and 12 women, mean age +/- SD: 31.

Ultrasound of the horizontal rectus muscle insertion sites: implications in preoperative assessment of strabismus.

Purpose: To determine the reproducibility and accuracy of ultrasonographic (US) measurements of distances between the corneoscleral limbus and the insertion site of the medial (MR) or lateral rectus (LR) muscle compared with intraoperative measurements in patients with strabismus.

Methods: One eye in each of 17 patients with postoperative secondary strabismus caused by over- or undercorrected eso- and exotropia and one eye of each of 19 patients with previously untreated strabismus underwent five repeated measurements by high-resolution ultrasonography of the distance from the corneoscleral limbus to the muscle insertion and three actual intraoperative measurements. Reproducibility, expressed as the coefficient of variation, accuracy (relative error) of US measurements, and the agreement with intraoperative measurements were assessed.