Vision in Preschoolers Study, Phase I
Results from the first phase of the Vision in Preschoolers (VIP)
were published in the April 2004 issue of the journal Ophthalmology.
VIP is a three phase study designed to evaluate the effectiveness
of vision screening tests commonly used for preschool-aged children.
The study was funded by the National Eye Institute, a part of the
National Institutes of Health, Department of Health and Human Services.
Many different vision screening tests are used widely. However,
none have been compared to each other and to comprehensive eye examinations
to determine how accurate the tests are in detecting children with
symptoms of common vision disorders. Children with symptoms require
a comprehensive eye examination to diagnose and treat their condition.
In Phase I of the VIP study, children were first screened by a
licensed eye care professional who was experienced in working with
children and who had been trained and certified to administer these
vision screening tests. The children were then given a comprehensive
eye examination using standardized diagnostic procedures and tests--referred
to professionally as a "Gold Standard Eye Examination"--by
an optometrist or ophthalmologist who did not know the results of
the child's prior screening test. In this way, the study researchers
could compare the results from screening tests and comprehensive
eye examinations to evaluate the accuracy of the screening tests.
Phases II and III of the VIP study will evaluate screening tools
when administered by pediatric nurses and trained lay screeners,
providing insight into the effectiveness of vision screening tests
in real world settings. Phase II of the VIP study is now underway.
The NEI will release new study results when they become available.
The National Eye Institute (NEI) conducts and supports research
that leads to sight-saving treatments and plays a key role in reducing
visual impairment and blindness. The NEI is part of the National
Institutes of Health (NIH), an agency of the U.S. Department of
Health and Human Services.
Journal Citation: The Vision in Preschoolers Study Group: Comparison
of Preschool Vision Screening Tests as Administered by Licensed
Eye Care Professionals in the Vision in Preschoolers Study. Ophthalmology
111: 637-650, 2004