eyes definition

Clouding of the lens portion of the eye. Cataracts will affect most people if they live long enough. Symptoms include double or blurred vision and sensitivity to light and glare. Cataracts can be diagnosed when the doctor examines the eyes with a viewing instrument. The ideal treatment for cataracts is surgical implantation of a new lens. Sunglasses can help to prevent cataracts.

(12 Dec 1998)

Disease (there is more than one type) characterised by increased pressure within the eye. Glaucoma can lead to blindness. Glaucoma is five times more likely to occur in Blacks than in Whites. Early detection of glaucoma is essential to the preservation of vision. Glaucoma can be treated with medications, laser or traditional surgery.

(12 Dec 1998)

Generally the orbit, although the true "socket" for the eyeball, into which a prosthetic eye would be inserted, is formed by the fascial sheath of the eyeball.

Synonyms: orbit.

Tooth socket, a socket in the alveolar process of the maxilla or mandible, into which each tooth fits and is attached by means of the periodontal ligament.

Synonyms: alveolus dentalis, alveolus.

(05 Mar 2000)

An instrument for keeping the eyelids apart during inspection of or operation on the eye.

Synonyms: blepharostat.

(05 Mar 2000)

<zoology> A simple visual organ found in many invertebrates, consisting of pigment cells covering a sensory nerve termination.

An eyelike spot of colour.

(01 Mar 1998)

<zoology> One of the movable peduncles which, in the decapod Crustacea, bear the eyes at the tip.

(01 Mar 1998)

1. A small, lenticular, calcareous body, especially. An operculum of a small shell of the family Tubinid, used to remove a foreign sub stance from the eye. It is rut into the inner corner of the eye under the lid, and allowed to work its way out at the outer corner, bringing with the substance.

2. <chemical>

Eye agate. See Eye.

(01 Mar 1998)

Preferred term: asthenopia