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Objectives. We determined the efficacy of pediatric-based preschool vision screening, as knowledge of vision screening effectiveness in primary care pediatrics is incomplete.Methods. Pediatricians and staff at nine primary care pediatric practices were trained in vision screening, and practices screened children aged 3-5 years from May 2007 through July 2008. Children failing or considered untestable were referred for pediatric ophthalmology examinations. We determined rates of testability, failure, referral, and ophthalmologic examination completion, as well as positive predictive values (PPVs) of screening failure and untestability. We also surveyed practices to assess the ease and accuracy of preschool vision screening.Results. Of 2,933 children screened, 93 (3.2%) failed the vision screening and 349 (11.9%) were untestable. Untestability was highest (27.1%) among 3-year-olds. The PPV for failing any aspect of the vision screening was 66.7%; for children aged 3, 4, and 5 years, the PPVs for failing were 30.0%, 77.8%, and 87.5%, respectively. However, only 38.7% of children who failed the vision screening received ophthalmologic examinations, despite multiple follow-up attempts. Pediatricians rated the ease and accuracy of screening 3-year-old children lower than for screening older children.Conclusions. Visual acuity-based screening had good PPV for vision loss for 4-and 5-year-old children but was less successful for 3-year-olds. Rates of referral and ophthalmologic examination completion were low, especially among children from low-income families.

Direct, practical training in preliterate eye chart vision screening may increase the number of 3-year-old children screened and improve clinical support staff comfort with screening preschool children. A single training session is not sufficient in itself, however, to achieve the goal of universal preschool vision screening in the primary care setting.

Seventy-three children received modern designs of posterior and flexible anterior chamber intraocular lenses. Twenty-eight (38%) had anterior chamber and 45 (62%) had posterior chamber lenses implanted. Postoperative implant complications occurred in 38 (54%) eyes; the most frequent was secondary membrane formation. Six eyes (22%) with anterior chamber lenses and 25 eyes (58%) with posterior chamber lenses required posterior capsulotomies. Seventy percent of the posterior chamber lens recipients less than six years of age developed secondary membranes. All of these eyes had a discission except one Nd:YAG laser patient. Forty-eight percent of the patients with posterior chamber lenses over six years of age required posterior capsulotomies: 55% had Nd:YAG laser capsulotomies and 45% had discissions. Based upon these observations, we now recommend primary implantation of flexible anterior chamber lenses in three- to six-year old children who have tissue-free visual axes and for all secondary implantations. Primary posterior chamber lenses are recommended for children six years of age and older and for younger children who will tolerate a Nd:YAG laser capsulotomy.

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