In these cases the lesions have consisted of detachment of the retina, optic atrophy, cataract, hemorrhages into the retina, and rupture of the choroid, paralysis of the oculomotor muscles, and paralysis of the optic nerve.
According to Buller of Montreal, such injuries may arise from the mechanic violence sustained by the patient rather than by the thermal or chemic action of the current.

Buller describes a case of lightning-stroke in which the external ocular muscles, the crystalline lens, and the optic nerve were involved.

Godfrey reports the case of Daniel Brown, a seaman on H.M.S.

Cambrian.

While at sea on February 21, 1799, he was struck both dumb and blind by a lightning-stroke.