Children ages 3 to 5 will be tested for amblyopia ("lazy eye") through the Davis County Health Department Sept. 26-30. The free screenings will be offered in the county's elementary schools.

For a schedule of the screenings, contact the health department's nursing division, 451-3315.Amblyopia is dimness of vision in one eye, found in one of every 35 children, and is caused when one eye becomes so dominant over the other that it fails to develop, falling into disuse.

Once the child's vision develops, by 6 or 7 years, the condition is irreversible. But if caught and treated early, by 3 or 4 years, the condition can be reversed.