Publications by authors named "George Shafranov"
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.
Background: Several conversion tables and formulas have been suggested to correct applanation intraocular pressure (IOP) for central corneal thickness (CCT). CCT is also thought to represent an independent glaucoma risk factor. In an attempt to integrate IOP and CCT into a unified risk factor and avoid uncertain correction for tonometric inaccuracy, a new pressure-to-cornea index (PCI) is proposed.
View Article and Find Full Text PDFPurpose: To evaluate a screening protocol for detection of individuals with a higher risk of chronic open angle glaucoma for which a complete glaucoma evaluation is indicated.
Patients And Methods: African Americans over 40 years of age in New Haven, CT. In the screening phase, volunteers filled out a questionnaire and underwent measurements of visual acuity, intraocular pressure (IOP) with a Tono-Pen and visual field with Frequency Doubling Technology.
Purpose: To evaluate variables associated with failure to access free eye care after participating in glaucoma screening.
Design: Review of responses to a survey completed by participants during glaucoma screening.
Participants: Two hundred seventy-three surveys completed by participants of African descent during screening.
Glaucoma patients present a unique set of challenges to physicians performing corneal refractive surgery. Corneal thickness, which is modified during corneal refractive surgery, plays an important role in monitoring glaucoma patients because of its effect on the measured intraocular pressure. Patients undergo a transient but significant rise in intraocular pressure during the laser-assisted in situ keratomileusis (LASIK) procedure with risk of further optic nerve damage or retinal vein occlusion.
View Article and Find Full Text PDFPurpose: To determine the least worsening of a visual field (VF) and the least number of confirming tests needed to identify progression of glaucomatous VF defects.
Design: Cohort study of participants in a clinical trial.
Participants: Seven hundred fifty-two eyes of 565 patients with advanced glaucoma.
Purpose: To assess the efficacy of a bleb revision technique with regard to improvement in intraocular pressure (IOP) and visual acuity after hypotony maculopathy and to evaluate the influence of duration of hypotony on visual outcome.
Patients And Method: : Retrospective review of a series of patients who underwent bleb revision for hypotony maculopathy (IOP less than 6 mm Hg and loss of two or more lines of central vision) following trabeculectomy. Bleb revision included excision of avascular bleb tissue, dissection posteriorly between conjunctiva and Tenon's capsule, and advancement and suturing of the conjunctiva at the limbus.
Purpose: To report hypertrichosis and increased pigmentation of vellus hairs of the malar region associated with topical bimatoprost usage.
Design: Interventional case report
Methods: In a female Hispanic patient with open-angle glaucoma, hypertrichosis, and increased pigmentation of the vellus hairs of the malar region developed after 8 weeks of unilateral treatment with bimatoprost. Increased growth of eyelashes was also noted.
Objective: To present for black and white patients with medically uncontrolled glaucoma 10-year results of treatment with 1 of 2 randomly assigned surgical intervention sequences.
Design: Randomized clinical trial.
Participants: Three hundred thirty-two black patients (451 eyes) and 249 white patients (325 eyes).