Table 1. Clinical characteristics and outcomes of Acanthamoeba keratitis infection among rigid gas-permeable lens wearers — United States, 2005–2011.

Eye Affected (n=37)
Left eye affected	21 (56.8)
Right eye affected	14 (37.8)
Both	2 (5.4)
Symptoms (n=37)
Redness	31 (83.8)
Sensitivity to light	27 (73.0)
Increased tearing	25 (67.6)
Foreign body sensation	24 (64.9)
Eye pain	24 (65.9)
Blurred vision	17 (45.9)
Eye discharge	10 (27.0)
Outcome (n=33)
Resolved	13 (39.4)
Still on anti-ameba therapy, no keratoplasty performed	9 (27.3)
Keratoplasty after failed therapy	10 (30.3)
Transplant planned	1 (3.0)
Best corrected visual acuity in the affected eye (n=32)
20/20	3 (9.4)
20/25 – 20/50	7 (21.9)
20/60 – 20/100	4 (12.5)
20/200 – 20/400	12 (37.5)
20/800 – 20/1200	5 (15.6)
Light perception	0 (0)
No light perception or enucleated	1 (3.1)