The aim of the study was to assess different visual acuity tests in the age group 1陆-6 years in 105 children with assumed normal vision, visual impairment due to ocular disease or strabismus. Acuity tasks for young children can be divided into three subtypes according to the kind of ...
Crude prevalence rates of visual acuity loss or blindness ranged from 1.35% (95% UI, 1.02%-1.65%) in Maine to 3.59% (95% UI, 2.93%-4.26%) in West Virginia. State differences persisted after standardization by age, sex, and race/ethnicity (Figure 2). Estimated counts and prevalence rates...
Main Outcomes and Measures Visual acuity as well as rates of amblyopia, glaucoma, suspected glaucoma, and other intraocular surgery. Results Among the 880 children (432 girls and 448 boys; mean [SD] age at annual follow-up, 4.9 [3.8] years) in the study, lens surgery was bilateral in 362...
In addition, it is of crucial importance that age appropriate and validated stimuli are used [6]. Another important factor that should be considered is response manner. A measurement of near visual acuity in children with reduced vision is particularly important, because low vision at near is an...
This study is aimed to determine visual acuity and visual skills in children with learning disabilities in primary schools within the suburban Kota Bharu district in Malaysia. Methods: We examined 1010 children with learning disabilities aged between 8–12 years from 40 primary schools in the Kota ...
The operant preferential looking (OPL) procedure allows a behavioral estimate of visual acuity to be obtained from children 6 mo to 3 yr of age. In clinical settings, there is often too little time available to obtain an acuity estimate with the standard OPL procedure. The goal of this study...
This study was designed to estimate the burden of blindness and vision impairment in school children, and to determine the proportion of students meeting the visual acuity (VA) demand for their classrooms. From 148 primary and secondary school classrooms in Edo State, Nigeria, the habitual distance...
To document population-based normative data for uncorrected visual acuity (UCVA) in Chinese preschoolers aged 36 to <48 months without any sight-affecting abnormalities and to evaluate its effectiveness for vision referral. In a population-based cohort of children in the Yuhuatai Pediatric Eye Diseas...
Purpose : To report refraction and visual acuity in children born with low birthweight. Cases and Method : We reviewed 342 eyes of 171 cases born with birthweight of 1,500 g or less. Refraction was evaluated as spherical equivalent. Results : At age 2 to 5 years, refraction averaged +1.4...
Measurement of presenting monocular distance visual acuity (VA) using the Amblyopia Treatment Study (ATS) HOTV protocol, was attempted by all (1774) children aged≥24 months. In addition, in children aged≥60 months (576), VA was also tested using the logMAR retro-illuminated HOTV or Early ...