“…The first is that lattice dystrophy constitutes a primary degenera tion of stromal collagen fibres [Fuchs, 1925: Dark and Thomson, I960]. The second theory is that corneal nerves are primarily affected, with degeneration of the collagen fibres as the consequence of nutritional disturbance due to pathologic innervation [Pillat, 1922[Pillat, , 1923Vrabec, 1957;Wolter and Henderson, 1962], Klaus et at. [1959] have reported lattice dystrophy with the bulbar paralytic form of amyotrophic lateral sclerosis and cutis hyperelastica in three sisters; one of these cases was presented by Vrabec [1957], It has been proved by Seitelberger and Nemetz [1961], and by de Souza Queiroz and Brick [1961 ], that the lattice lines are of amyloid origin.…”