Table 2.

Keratitis post laser refractive surgery - When to suspect what?

Signs	Presentation	Type of keratitis
White infiltrate with rounded margins/stromal edema/overlying epithelial defect	<1 week	Staphylococcus/streptococcus/pseudomonas
Yellow white dense infiltrate with irregular margins/satellite lesions/endoexudates	>1 week	Fungus
Grayish white ring infiltrate/linear/patchy/irregular infiltrates	>1 week	Acanthamoeba/mycobacteria/nocardia
Dendritic/geographic epithelial defect/grayish white stromal infiltrate with edema/endothelial KPs/AC reaction	>1 week	Herpes viral disease
Granular infiltration in the interface starting at the periphery and spreading centrally	<1 week	Diffuse lamellar keratitis
Marginal corneal infiltrates with no or minimum overlying epithelial defect	<1 week	Staphylococcal marginal hypersensitivity

KP=Keratic precipitates, AC=Anterior chamber