COVID-19 associated orbital mucormycosis is a severe, rapidly progressing fungal infection of the nasal, sinus, and orbital (eye socket) region caused by molds ...

COVID conjunctivitis is inflammation of the conjunctiva (the clear membrane covering the white of the eye and inner eyelids) caused directly or indirectly by ...

Cotton wool spots are small, fluffy, white patches seen on the retina (the light-sensing layer at the back of the eye) during a dilated eye exam. They are not ...

Steroid glaucoma is a type of open-angle glaucoma that appears after the eye or the whole body is exposed to corticosteroid medicines. These medicines—such as ...

Corticobasal Degeneration (CBD) is a rare, progressive brain disease that slowly damages specific brain cells, leading to problems with movement, thinking, and ...

When an eye-surgeon finishes cataract or corneal-transplant surgery, they often inject a small jet of balanced salt solution into the edges (stroma) of the ...

A corneal epithelial defect is a localized area where the outermost layer of the cornea (the epithelium) has been interrupted or lost. This break in the ...

Corneal edema is swelling of the cornea, the clear, dome‑shaped front surface of the eye that helps focus light onto the retina. In corneal edema, excess fluid ...

Corneal donation diseases encompass a spectrum of serious corneal disorders in which damage or degeneration of the cornea—the clear, dome-shaped “window” at ...

A corneal dermoid is a benign, congenital growth on the surface of the eye composed of normal skin-like tissue in an abnormal location. These lesions, also ...

Corneal dellen are small, localized areas of thinning on the edge of the clear front window of the eye (the cornea). They appear as saucer‑shaped depressions ...

The cornea is the clear, dome‑shaped window at the front of your eye. Corneal biomechanics is the study of how this window bends, stretches, and returns to ...

Corneal allograft rejection is an immunologic response in which the recipient’s immune system specifically attacks donor corneal tissue, leading to ...

Corneal Allogenic Intrastromal Ring Segments (CAIRS) are tiny arc‑shaped implants carved from donor (allogenic) corneal stroma. These segments are inserted ...

Whorl keratopathy—also known as vortex keratopathy or cornea verticillata—is a pattern of fine, golden‑brown or grayish opacities in the basal layer of the ...

Cornea verticillata—also known as vortex keratopathy or whorl keratopathy—is a pattern of fine, golden‑brown or gray opacities arranged in a characteristic ...

Cornea transplantation–induced glaucoma is a form of secondary glaucoma that arises after corneal graft procedures such as penetrating keratoplasty (PKP), ...

Cornea plana is a rare congenital eye disorder in which the transparent, dome‑shaped front window of the eye (the cornea) is abnormally flat. Instead of the ...

Cornea farinata is a benign, degenerative condition of the cornea characterized by innumerable, fine, dust‑like opacities located in the deep posterior stroma ...

Functional Neurological Symptom Disorder (FNSD) is a condition where individuals experience real neurological symptoms—such as weakness, tremors, or ...