13Identifying vision problems This is rather difficult until a child is in school.A few tests are available for the younger childSnellen Illiterate ETeller Acuity CardsPhoto ScreeningChildren often do not know they have a problem, because they do not know what they are looking at.The Teller Acuity Cards and Teller Acuity Cards II™ offer eye care practitioners and vision researchers a rapid and reliable method of assessing visual acuity in infants, children, and nonverbal adults. The set of seventeen cards allows clinicians and researchers to measure an infant or child's ability to resolve black and white striped patterns printed on the cards. Teller Acuity Cards® II can test for pediatric visual acuity without requiring a verbal response. By judging an infant's attention to a series of cards showing stripes of different widths, the vision screening professional can perform accurate infant vision screening and avoid the complex, time-consuming laboratory testing that would otherwise be necessaryWhat is photoscreening? Photoscreening is a tool for screening the eyes of pre-verbal or challenged children. During a photoscreening, the screener uses a special camera to take a picture of the child's eyes. Once the instant photo is developed, the photos are sent to a trained optometrist or ophthalmologist who analyzes the photo to look for signs of vision problems.
24Case StudyA friend encouraged Mrs. Howard to take her son to the developmental screening clinic being held this week at the community recreation center. Parker is nearly 2 years old and speaks only a few words that are understandable. He has few opportunities to play with other children his age because he spends most days with his grandmother while his mother works at a nearby hospital. On the day of the developmental screening, team members checked Parker's height, weight, vision, hearing, speech, cognitive abilities, and motor skills. The team leader also read through the child history form that Mrs. Howard had completed and noted that Parker had several food allergies, as well as frequent upper respiratory and ear infections. All of Parker's screening results proved to be within normal limits, with the exception of his hearing tests, which revealed a significant loss in one ear and a moderate loss in the other.