Horizontal deviation of retinal nerve fiber layer peak thickness with stratus optical coherence tomography in glaucoma patients and glaucoma suspects.

Purpose: To evaluate the prevalence of nasal or temporal shifts in retinal nerve fiber layer (RNFL) peak contours with Stratus optical coherence tomography (OCT) and possible associations with demographic or glaucoma-related variables in glaucoma patients and glaucoma suspects, and to emphasize the importance of this finding in clinical practice.

Methods: This was a retrospective case series of glaucoma patients and glaucoma suspects (1 eye per patient) who underwent a Fast RNFL thickness study with the Stratus OCT. A study was considered to have a clinically significant horizontal deviation if there was greater than 20 degrees shift from the normative database in both superior and inferior peaks.

Central corneal thickness in a Puerto Rican population.

Purpose: To evaluate mean central corneal thickness (CCT) in a Puerto Rican population and to compare our findings with published mean central corneal thicknesses of white, Hispanic, and African American populations in the United States.

Patients And Methods: Volunteers at the Centro Médico, San Juan, Puerto Rico, completed a survey and participated in an eye examination, which included measurement of intraocular pressure and central corneal thickness.

Results: Of 588 Puerto Rican participants, the mean CCT was 541+/-33 microm, which is significantly thinner than the published values for white populations (P<0.

Evaluation of a modified protocol for selective laser trabeculoplasty.

Purpose: To compare the intraocular pressure (IOP) response to a modified protocol for selective laser trabeculoplasty (SLT) to standard protocols for SLT and argon laser trabeculoplasty (ALT).

Materials And Methods: A retrospective study of 318 eyes of 284 patients diagnosed with either primary open angle, pigmentary or pseudoexfoliation glaucoma who underwent laser trabeculoplasty from September 1997 to September 2005. One hundred and two patients, who underwent a modified SLT protocol with 100 overlapping laser spots over 180 degrees of trabecular meshwork were compared with 89 patients who received SLT with 100 nonoverlapping spots over 360 degrees and another 127 patients who received ALT with 50 spots over 180 degrees.

Gray optic disc crescent: influence of ethnicity in a glaucoma population.

Purpose: To evaluate the prevalence of the gray optic disc crescent within a glaucoma population and the influence of ethnicity and other variables.

Patients And Methods: Consecutive patients of white or African American ethnicity, seen in the Glaucoma Service of Yale Eye Center, were included in the study. The 2 ethnic groups were not matched for refractive error, age, or stage of glaucoma.

Influence of pupillary diameter, ciliary muscle tone, and ambient light on nerve fiber layer measurements with scanning laser polarimetry.

Purpose: To evaluate the influence of the pupillary diameter, ciliary muscle tone, and room light on nerve fiber layer measurements with the scanning laser polarimeter (GDx).

Methods: One randomly selected eye of ten normal volunteers was examined with the GDx in a two-day protocol under eight testing conditions (pilocarpine 1%, phenylephrine 10%, tropicamide 1%, or no drops with room lights on or off). The twelve parameters, obtained by the GDx, were compared under the eight testing conditions, using two way ANOVA for repeated measurements and Tukey HSD post hoc test.