If the lazy eye is caused by an uncorrected refractive error, both eyes may appear normal. However, in the case of strabismus, the eyes may be misaligned, with one eye wandering inward or outward.

The other types of refractive errors are: Patients can have more than ... Both kinds of astigmatism can occur in one or both eyes, but corneal astigmatism is most common, says Friedman.

Both conditions are refractive errors, which means they occur when the eye's shape causes light to focus in front of or behind the retina (the light-sensitive tissue at the back of the eye ...