Researches on the etiology of trachoma have so often raised false hopes of a solution of the problem that the ophthalmologist has become suspicious of new ideas. The investigator himself, if he is able to criticize his own researches, always finds some reason to question his results.
It is for this reason that I have placed a question mark after the title of this paper. Even if the recent experiments of Cuénod and Nataf1 have confirmed the existence of the minute bodies which I described in 1933 in trachomatous tissues, particularly in the follicles, their nature and their rôle in the etiology of trachoma require still further study.
As a result of my researches,2 which have recently been confirmed by Cuénod and Nataf, one sees looming on the obscure horizon of the etiology of trachoma a new category of germs, the rickettsias. Further investigations will tell whether the
BUSACCA A, Thygeson P. IS TRACHOMA A RICKETTSIAL DISEASE?. Arch Ophthalmol. 1937;17(1):117–126. doi:10.1001/archopht.1937.00850010129009
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