<unk>  is caused by common refractive errors, such as astigmatism, far-sightedness, and myopia, in one eye.<unk>  is likely the result of both genetic and environmental influences. Some studies suggest, in older adults, developing asymmetric cataracts may cause worsen<unk> . However,<unk>  is associated with age regardless of cataract development: a rapid decrease in<unk>  during the first years of life, an increase during the transition to adulthood, relatively unchanging levels during adulthood but significant increases in older age.
Anisometropia
Hypertropia
Emmetropia
Cyclotropia
Physiological anisocoria
Exotropia
Ocular dysmetria
Heterotopia 