Lattice corneal dystrophy is a hereditary corneal disease with symmetrical corneal stroma and severe visual impairment. It was first described by Biber (1890). Haab (1899) and Dimmer (1899) reported some hereditary cases. Fuchs (1902) further confirmed that there is a familial tendency. Bucklers (1938) reported a typical pedigree. In 1967, Kintworth confirmed that this disease is a genetic variation of amyloidosis that is limited to the cornea. At present, five clinical types have been found, namely, I, II, III, IIIA, and IV. Among them, type I is more common, and many cases have been reported in China. Hu Danning summarized that 5 families have been reported in China, with 31 cases. 25 of the 46 offspring of the patient developed the disease, with an incidence rate of 52.9%.