Intraocular lens (IOL) power calculations are known to be difficult in eyes that have had corneal refractive surgery and several methods have been proposed to estimate IOL power. Among the methods not requiring preoperative data, the apahakic refraction technique has been successfully used to calculate IOL power in post-refractive cases and other conditions that cause unreliability in standard ...

UNLABELLED The purpose of this study was to measure the changes in intraocular pressure (IOP) and refraction following orbital decompression for thyroid orbitopathy. METHODS Retrospective review of 18 eyes in 10 consecutive patients who underwent orbital decompression including intraconal fat excision for proptosis secondary to thyroid orbitopathy. IOP using tonopen, exophthalmometry, autoref...

Background: Handheld autorefractometers are now widely used for screening refractive errors in children. The purpose of the study was to compare measurements from table-mounted, handheld and retinoscopy Material methods: Measurements children with poor visual acuity and/or strabismus were obtained 2WIN table-mounted Nidek ARK-1 refractometers after instillation 0.5% atropine. Data on sphere, sp...

PURPOSE To describe spherical equivalent (sph eq) refractive errors in preschool members of a Native American tribe with a high prevalence of astigmatism. METHODS Cycloplegic autorefraction measurements were obtained for 819 three- and four-year-old Tohono O'odham children, with follow-up measurements in 146 after 4 to 8 years. RESULTS Mean sph eq was significantly more hyperopic in the ast...

PURPOSE To examine the impact of parental astigmatism on astigmatic error and ocular biometric parameters in children. DESIGN Population-based cross-sectional study. METHODS Six-year-old children (n = 1,741; 78.9% response) and 12-year-old children (n = 2,367; 75.3% response) underwent a comprehensive eye examination, including cycloplegic autorefraction and ocular biometry. Astigmatism was...

Purpose: To describe the thickness profiles of full retinal and outer layers (ORL) at macula in healthy young adults, associations with best-corrected visual acuity (BCVA). Methods: In total, 1604 participants (19-30 years) underwent an eye examination that included measurements their BCVA, axial length, autorefraction. The foveal pit nine Early Treatment Diabetic Retinopathy Study macular regi...