Mr. Calhoun is an ophthalmic photographer/technician at the Mayo Clinic in Jacksonville, Fla.


Alpha-methylacyl-CoA racemase deficiency.
Central retinal artery occlusion.
360-degree retinal detachment.











Best disease, also called vitelliform macular dystrophy.









Cotton-wool spot.

Myelinated nerve fiber layer.

Wet age-related macular degeneration.

Macular pucker.

Melanoma with subretinal fluid.

HD-OCT of posterior vitreous detachment with operculum.

Pseudoxanthoma elasticum with choroidal neovascularization.

Retinal pigment epithelial detachment.

Fluorescein angiogram of retinal
vasculitis due to lupus.

Subhyaloid hemorrhage.

Vitreous cyst.