Amblyopia is diminished vision in one eye without a detectable lesion or disease of the eye. Sometimes used synonymously with suppression amblyopia.
suppression a. Involuntary suppression of vision in one eye, specifically in the retinal
area with the greatest visual acuity; occurs when the images formed by the two eyes are so different that they cannot be fused into one image; the difference may be due to unequal refraction, or when each eye points in a different direction.