Preschool vision screening

There is no sports, development, and school performance.5 agreement about the age at which children Children with amblyopia have a risk of vision should be screened, on the tests that should be loss in the non-amblyopic eye, resulting in used, and on the outcomes that should be blindness.4,5 The early detection of vision measured. [...] The results refraction for the detection of astigmatism in obtained without cycloplegia were 245 children aged three years to five years.35 inaccurate.41 Lea Symbols had a sensitivity of 90% and a specificity of 44%, whereas refraction had a 4.1.2 Screening effectiveness 91% sensitivity and an 86% specificity.35 The sensitivity and specificity of a digital Random- A randomized controlled trial exa [...] The sensitivity ranged Screening of 3.5-year-old children by an from 60.4% to 70.9%, and the specificity orthoptist and the results of referrals to the ranged from 69.6% to 79.9%. [...] This study concluded that based on the conducted in the UK.46 The screening test numbers of children detected with vision resulted in 5.1% of children referred to the defects, the screening program is valid and hospital eye service, and detection of straight- should be continued.43 eyed amblyopia and strabismic amblyopia. [...] This most common test used in Canada.23 The VIP method of secondary screening that combines study compared the administration of vision the skills of an optometrist and an orthoptist screening tests among three- to five-year-olds was found to be effective in detecting most by nurses and lay screeners.