Senile scleral plaque is an age-related change in the white coat of the eye, which doctors call the sclera. It looks like a flat, well-defined, slate-gray or ...

Senile retinoschisis—also called degenerative retinoschisis—is a common, age-related eye condition where the retina (the thin, light-sensing tissue at the back ...

Secondary acquired nasolacrimal duct obstruction means the normal tear-drainage tube in the nose gets blocked because of another disease, injury, treatment, or ...

Seborrheic keratosis is a benign (non-cancerous) skin growth that looks like a small plaque or wart that is “stuck on” the skin surface. The growth is made ...

Sebaceous carcinoma is a cancer that grows from oil-making glands in the skin. These oil-making glands are called sebaceous glands. They make sebum, which is a ...

Scleromalacia perforans is a rare eye problem where the tough white coat of the eye (the sclera) becomes very thin and weak in quiet, non-red areas. It happens ...

Sclerocornea is a rare eye condition that is usually present at birth. In this condition, the clear front window of the eye (the cornea) looks white and ...

Sclerochoroidal calcification means tiny to small lumps or plaques of calcium salts have settled inside the white wall of the eye (the sclera). With time, this ...

Scleritis is inflammation of the sclera, which is the strong white wall of the eye. The sclera gives the eye its firm shape and protects the delicate parts ...

Schwartz–Matsuo syndrome is sudden or fluctuating high eye pressure that happens at the same time as a rhegmatogenous retinal detachment. In SMS, the drainage ...

Schwartz–Matsuo syndrome is a rare eye problem where eye pressure becomes very high at the same time as a rhegmatogenous retinal detachment (a “tear with fluid ...

Schwartz-Jampel syndrome is a rare, genetic condition that affects muscles and bones. In very simple terms: the muscles stay too tight and do not relax easily ...

Schnyder corneal dystrophy is a rare, inherited eye condition in which fat-like substances—mainly cholesterol and certain phospholipids—slowly build up inside ...

Saturday Night Retinopathy is a rare eye emergency. It happens when someone becomes deeply unconscious—most often after heavy alcohol use or sedating drugs—and ...

Sarcoid uveitis is eye inflammation that happens when a person has sarcoidosis, a condition where the immune system forms tiny clumps of inflammatory cells ...

Sanjad-Sakati Syndrome (SSS)—also called HRD syndrome (hypoparathyroidism–retardation–dysmorphism)—is a very rare, inherited condition. Children are born with ...

Salzmann Nodular Degeneration is a slow eye surface problem of the clear front window of the eye called the cornea. In this condition, small, raised, ...

Sagging Eye Syndrome is an age-related problem of the soft “guy-wires” and pulleys that guide your eye muscles. With age, a key strap of tissue that connects ...

Saethre-Chotzen syndrome is a genetic condition where some of the flexible seams between skull bones (called sutures) close too early. When these seams close ...

Saccadic intrusions are brief, unwanted, fast eye jumps that interrupt steady looking. Your eyes are trying to hold still on a target, but a sudden, quick jump ...