PURPOSE: The authors report two cases of Mycobacterium keratitis following
LASIK
METHODS: The case reports are based on a retrospective review of clinical h
istory and associated findings.
RESULTS: Two patients developed infectious keratitis after undergoing laser
in situ keratomileusis (LASIK). In case #1, the infection developed after
manipulation of the Lamellar flap to remove epithelium from the stromal bed
. In case #2, prior radial keratotomy may have been a contributing factor t
o development of the infection. Corneal infiltrates appeared as focal, whit
e, stromal deposits. Cultures isolated Mycobacterium fortuitum from case #1
and Mycobacterium chelonae from case #2. Topical fortified amikacin, clari
thromycin, tobramycin, and ciprofloxacin eventually controlled the infectio
n. Topical prednisolone acetate and bandage contact lenses were necessary t
o control inflammation and pain. Infiltrates were slow to resolve until foc
al necrosis eroded through the flaps leading to rapid clearing of the infil
trates; however, scarring of the cornea developed at the site of necrosis.
Visual recovery was good in the first case but limited ill the second.
CONCLUSIONS: Mycobacterium keratitis complicating LASIK may be difficult to
eradicate until the sequestered stromal infiltrate drains. Rapid recogniti
on of the causative organism and aggressive medical and surgical management
of the infection may improve the outcome.