Diagnosis is done by direct observation under magnified view of slit lamp revealing the<unk>  on the<unk>  The use of fluorescein stain, which is taken up by exposed<unk>  stroma and appears green, helps in defining the margins of the<unk><unk> , and can reveal additional details of the surrounding epithelium. Herpes simplex<unk> s show a typical dendritic pattern of staining. Rose-Bengal dye is also used for supra-vital staining purposes, but it may be very irritating to the eyes. In descemetoceles, the Descemet's membrane will bulge forward and after staining will appear as a dark circle with a green boundary, because it does not absorb the stain. Doing a<unk>  scraping and examining under the microscope with stains like Gram's and KOH preparation may reveal the bacteria and fungi respectively. Microbiological culture tests may be necessary to isolate the causative organisms for some cases. Other tests that may be necessary include a Schirmer's test for keratoconjunctivitis sicca and an analysis of facial nerve function for facial nerve paralysis.
Corneal ulcer laboratory findings
Recurrent corneal erosion physical examination
Orbital cellulitis physical examination
Conjunctivitis laboratory findings
Blue rubber bleb nevus syndrome laboratory findings
Erythrasma physical examination
Blepharitis laboratory findings
Erythrasma laboratory findings