What is Dissociated Vertical Deviation (DVD)?
DVD is a condition in which one eye drifts upward, either frequently or infrequently. The amount of drifting may even vary during the course of the day. DVD may be present in one or both eyes.
When and why does DVD occur?
DVD is not typically seen at birth and usually becomes obvious by 2-3 years of age. Occurrence is highest in those with early onset squint. It also can occur with a poorly seeing eye.
What treatment options are there for DVD?
Glasses, eye patching or eye drops can sometimes reduce the frequency of the DVD. Eye muscle surgery is usually indicated when the DVD is large and/or frequently present.
Does DVD affect visual acuity?
DVD can affect vision. Since the image from the upward deviated eye is suppressed or blocked, a type of decreased visual acuity, known as amblyopia (lazy eye), may occur during childhood. Amblyopia is treated with glasses, eye patching, or eye drops. If amblyopia is not treated in early childhood, the decreased vision can be permanent.
Do eye exercises help DVD?
Eye exercisese do not help DVD..