Pseudomonas aeruginosa keratitis

Pseudomonas aeruginosa belongs to the gram-negative bacillus. The size of (0.5 ～ 1.0) µm * (1.5 ～ 30) µm of orthrax or micro-curve bacteria has the ability to produce pigments and cause blue-green purulent secretions. It is called Pseudomonas aeruginosa, which is widely present in soil and water in nature. It can also parasitize normal human skin and conjunctival sac. Sometimes it can also be present in contaminated eye drops such as fluorescein tetracaine atropine pilocarpine etc. Survivable in general antibacterial eye drops such as sulfa. Pseudomonas aeruginosa has a strong pathogenicity. The main pathogenic substances are endotoxin (cell wall lipopolysaccharide) and exotoxin (elastolytic protease alkaline protease and exotoxin A). Experiments have shown that animals are quickly released in the cornea after inoculation The production of toxins and enzymes and the simultaneous infiltration of neutrophils, leading to melting and necrosis of the corneal tissue.