The method of isotropic photorefraction has been used in a trial of refractive screening of 6-9 month old infants. Data are presented on the calibration of the method against retinoscopic measurements and its reliability. In photorefractive screening of 1096 infants under cyclopentolate cycloplegia 5% were found to be hypermetropic (over +3.5 D), 4.5% myopic, and 1.3% anisometropic (over 1 D). ...

The detection of refractive errors includes effective screening programmes in the school or community. However, the lack of human and other resources often prevent such programmes from occurring. Therefore, patients with many conditions, both refractive and nonrefractive, present at clinics. The separation of these patients into refractive and non-refractive conditions is important in the good ...

Refractive errors are a common cause of decreased visual acuity. They can be found in 2-4% of preschool children. If not discovered on time and not properly treated, they can lead to amblyopia and strabismus. The active participation of parents and paediatricians is of great importance in timely discovering and treatment of amblyopia. The most common causes of amblyopia are strabismus (50.1%) a...

PURPOSE To assess the accuracy of intraocular lens (IOL) power prediction for cataract surgery with open angle glaucoma (OAG) and to identify preoperative angle parameters correlated with postoperative unpredicted refractive errors. MATERIALS AND METHODS This study comprised 45 eyes from 45 OAG subjects and 63 eyes from 63 non-glaucomatous cataract subjects (controls). We investigated differe...

PURPOSE To determine whether residual hyperopia could be corrected postoperatively using the light adjustable lens technology in patients undergoing cataract surgery and light adjustable lens implantation. DESIGN Prospective, nonrandomized clinical trial. METHODS Fourteen eyes of 14 patients were studied. The manifest refraction, uncorrected visual acuity (UCVA), and best-corrected visual a...

BACKGROUND: School-based visual acuity screening activities calculate the rates of students with possible refractive errors (REs). School staff informs results children’s parents and need for an in-depth examination to assist RE. AIM: The study aimed identify prevalence REs among secondary based school in some provinces Vietnam. METHODS: There are 4838 participating survey. All them were screen...