Valley Fever—known to doctors as coccidioidomycosis—is an infection you catch by breathing in microscopic fungal spores that float up from dry, dusty soil in ...
Coccidioidomycosis—often called Valley Fever—is a fungal infection caused by breathing in microscopic spores of Coccidioides fungi that live in certain desert ...
Cobalamin C (often written cblC) deficiency is the single most common inherited error in the way our cells handle vitamin B₁₂. It sits at the crossroads of two ...
Coats disease is an uncommon, non‑hereditary eye disorder in which the tiny blood vessels (capillaries) inside the retina become abnormally dilated, twisted, ...
Cytomegalovirus (CMV) retinitis is a severe viral infection of the retina – the light‑sensing tissue at the back of the eye. CMV belongs to the herpes‑virus ...
Cytomegalovirus (CMV) endotheliitis is a sight‑threatening eye infection in which human CMV invades the corneal endothelium—the single‑cell‑thick layer that ...
Clear Lens Extraction (CLE) — sometimes called refractive lens exchange, refractive lensectomy or custom lens replacement — is a surgical technique in which ...
Cicatricial ectropion means the eyelid—usually the lower lid—turns outward because scar tissue (a “cicatrix”) shortens or contracts the skin, pulling the lid ...
“Cicatricial” is another word for “caused by a scar.” “Conjunctivitis” means inflammation of the conjunctiva―the thin, clear membrane that covers the white of ...
Chronic Relapsing Inflammatory Optic Neuritis—usually shortened to CRION—is a rare, immune‑mediated disease in which the optic nerve keeps becoming inflamed, ...
Chronic Progressive External Ophthalmoplegia is a slow‑moving muscle disease in which the tiny muscles that lift your eyelids and move your eyes lose power ...
Chromatopsia is an acquired disturbance of colour vision in which everything in the visual field looks as though it has been dipped in one dominant tint, while ...
Choroideremia (pronounced kuh‑ROY‑der‑EE‑mee‑ah) is a rare, inherited eye disease that slowly robs people—mostly males—of their sight. It starts with ...
Choroidal macroaneurysms (CMAs) are balloon‑like bulges that form in the arteries of the choroid, the dense, blood‑rich layer that sits just behind the retina. ...
A choroidal macrovessel (CM) is an unusually large, tortuous blood vessel inside the choroid, the vascular layer that lies between the retina and the sclera. ...
Choroidal Posterior Vortex Veins Disorder describes a group of anatomical variations and malfunctions in the vortex‑vein drainage system of the choroid, ...
Choroidal vascular anomalies are a group of eye problems in which the network of blood vessels inside the choroid—the richly‑supplied, brick‑red layer that ...
A choroidal rupture is a tear that runs through three delicate, layered tissues at the back of the eye: the choroid (the blood‑rich layer that feeds the ...
A choroidal osteoma is an unusual, non‑cancerous growth made of true, mature bone that forms inside the choroid—the vascular, brown‑red layer lying between the ...
Choroidal neovascularization means that brand-new, fragile blood vessels grow out of the layer under the retina called the choroid. When the original trigger ...