Impairment of vision without any lesion of the eye detected
A white or gray band around the margin of the cornea as a result of cholesterol deposition or hyaline change or both. This occurs with advancing age.
Inflammation of the eyelids
A tonic spasm of the orbicularis oculi muscle which produces more or less total closure of the eyelid.
An opacity on or in the lens that usually impairs vision or causes blindness
A cystic swelling in a gland of the eyelid due to a blocked duct
Excessive edema of the conjunctiva
Inflammation of the choroid or uveal tract
Inflammation of the choroid and retina
Inflammation of the lacrimal sac
Stricture or narrowing of a lacrimal duct
Abnormal protrusion of the eyeball (bulging eyes). This can be due either to a local process or caused by a more generalized disease, such as Graves disease. Also spelled exophthalmus
A localized, purulent, inflammatory bacterial infection of one or more glands of the eyelids. This is also called a stye.
Also called hyperopia, this is farsightedness. This occurs when the eyeball is too short and images are thus focused at a point behind the retina
Bleeding into the anterior chamber of the eye, usually due to trauma.
The loss of central vision due to changes in a lining of the retina. This is an age-related disorder. In this condition, peripheral vision is preserved
Contraction of the pupil
Physiologic or morbid dilatation of the pupil
An involuntary, rapid, rhythmic movement of the eyeball which can be horizontal, vertical, rotatory, or mixed
Swelling or edema of the optic disc, usually as a result of intracranial pressure, malignant hypertension, or thrombosis of a retinal vein
Impairment of vision due to old age.
A thick triangular piece of tissue, pale in color, that extends medially from the nasal corneal border to the inner canthus
Drooping of the upper eyelid from paralysis of the third nerve or from sympathetic innervation
A general term for degenerative, noninflammatory diseases of the retina.
An area of lost or depressed vision within the visual field, surrounded by an area of normal vision
Adhesion of the iris to the cornea or the lens
Inflammation of all or part of the uveal tract or choroid
A soft, yellow spot or plaque occurring on the eyelids, often in groups. Also called xanthelasma
Dryness of the conjunctiva and cornea due to a vitamin A deficiency.