ON TRACHOMA.

Symposium on trachoma

In 1957 T'ang and associates in Peking isolated a virus from trachoma in the yolk sac of embryonated eggs. By determining that streptomycin but not penicillin could be used they were able to keep the isolated organisms sterile and in passage. Since then, a number of laboratories around the world have been able to isolate trachoma viruses and grow them in the laboratory. Many workers, like mysel...

Trachoma

Trachoma.

Trachoma is the most common infectious cause of blindness. It is caused by ocular serovars of Chlamydia trachomatis. Transmission is favoured in poor communities, where crowding is common and access to water and sanitation inadequate. Repeated reinfection over many years causes dense scarring of the upper eyelid. The resultant inversion of the lashes abrades the eyeball, and the abrasion leads ...

Researches on the Aetiology of Trachoma

Kirwan, E. O'G.-" Epidemic Superficial Punctate Keratitis in Bengal." Prcc. All-India Obhthal. Soc., Vol. III, p. 1, 1933. Kuchner, K.-" Inoculations with Herpes Virus." Klin. Monatsbl. f. A tgenheilk., Vol. XCI, p. 485, 1933. Lloyd, R. I.-" Herpes and Allied Conditions." Amer. Ji. of Ophthal., Vol. XIV, p. 601, 1931. Moore, R. F -" Ocular Manifestations of Lesions of the Fifth Nerve." British ...

Studies on the Etiology of Trachoma

A bacillus which corresponds closely with the description of B. granulosis Noguchi was isolated from 1 of 5 typical cases of trachoma in Chinese. Inoculation of suspensions of this bacillus into the eyelids of M. sinensis monkeys produced scarring and contraction of the tarsal cartilages with the development of a few conjunctival follicles in 2 out of 5 animals. The possible relations of the ob...