A genetic eye disorder where the cornea of the eye develops abnormal, lattice-shaped lines caused by abnormal deposits of a substance called amyloid. There are three different types of corneal dystrophy: type 1 is a dominantly inherited form with an early onset of vision impairment, type 2 is a less severe eye disorder but involves systemic amyloidosis and type 3 is a recessive form that usually starts after the age of 70. See also Lattice corneal dystrophy type 1