PURPOSE To assess the precision (repeatability and reproducibility) of ocular parameters measured by the Tomey OA-2000 biometer, and to compare them with those measured by the IOLMaster. METHODS In this prospective study, the right eyes of 108 healthy subjects were included. Three consecutive scans were obtained by 2 observers using the Tomey OA-2000, and in the same session one observer used...

Background and Objective: The main purpose of this paper is to compare the reliability and repeatability of data obtained clinically with the IOL Master with those using a standard applanation ultrasound biometry on different refractive error types to measure axial length. Patients and Methods: 39 patients were examined by both the IOL Master and the Sonomed for axial length measurement and IOL...

Background: Cataract refractive errors are caused by cataracts. It can go up to several dioptres (D). Correction of expected during cataract surgery altering the axial length measurement. Determine effect posterior sub-capsular cataracts on eye's status. Methods: 112 patients with participated in study. The most common error found PSC was astigmatism, followed myopia. study conducted at Angel E...

AIMS To evaluate the overall accuracy and reproducibility of the Alcon portable autokeratometer (PAK) measurements in infants and young children. METHODS The accuracy of the Alcon PAK in measuring toric reference surfaces (1, 3, 5, and 7 D) under various suboptimal measurement conditions was assessed, and the reproducibility of PAK measurements of corneal astigmatism in newborn infants (n = 5...

Acceptance for publication May’ 2011 .................................. Purpose: To compare surgically induced astigmatism between injector and forceps delivery system for intraocular lens implantation in phacoemulsification. Methods: This Quasi experimental study was carried out in Ophthalmology Department, Shaikh Zayed Hospital, Lahore. One hundred consecutive cataract patients were operated ...

Objective: The objective of this study is to evaluate the change in corneal refractive status before and after Pterygium excision. Methodology: 31 patients who underwent excision were evaluated pre-operatively post-operatively for assessment astigmatic changes. All having more than grade II with conjunctival autografting. Pre-operative post- operative astigmatism was done by refraction Streak R...