HYPOPYON keratitis due to infection with the Gram-negative diplobacillus is an uncommon condition. Since the causative organism is of little general interest, bacteriologists have not studied it intensively. Ophthalmologists, on the other hand, find the organism very important but have given it little attention because of the special techniques required in its study. Petit,1 in 1898, on the basis of his clinical and bacteriologic investigation of three cases, divided diplobacillary infections into two groups. Since then, ophthalmologists have considered central hypopyon keratitis to be due to the diplobacillus of Petit and marginal keratitis or conjunctivitis to be due to the Morax-Axenfeld bacillus (Moraxella lacunata). It is the purpose of this paper to demonstrate that this rather arbitrary division is not well founded on either clinical or bacteriologic grounds.
In July, 1896, Morax2 published the first paper on the Gram-negative diplobacillus. He described it as the causative
FEDUKOWICZ H, HORWICH H. THE GRAM-NEGATIVE DIPLOBACILLUS IN HYPOPYON KERATITIS. AMA Arch Ophthalmol. 1953;49(2):202-211. doi:10.1001/archopht.1953.00920020207010