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The ball or globe of the eye.

A disease characterized by enlargement of the thyroid gland, prominence of the eyeballs, and inordinate action of the heart; -- called also exophthalmic goiter. Flint.

Jet black. "Bugle eyeballs." Shak.

resemble in shape certain bulbous roots; as, the bulb of the aorta. Bulb of the eye, the eyeball. -- Bulb of a hair, the "root," or part whence the hair originates. -- Bulb of the spinal cord, the medulla oblongata, often called simply bulb. -- Bulb of a tooth, the vascular and nervous papilla contained in the cavi…

ion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball. -- n.

The transparent part of the coat of the eyeball which covers the iris and pupil and admits light to the interior. See Eye.

The protrusion of the eyeball so that the eyelids will not cover it, in consequence of disease.

over of the eye; that portion of movable skin with which an animal covers or uncovers the eyeball at pleasure.

greenish tinge of the refracting media of the eye, and a hard inelastic condition of the eyeball, with marked increase of tension within the eyeball.

A condition of the eye in which, through shortness of the eyeball or fault of the refractive media, the rays of light come to a focus behind the retina; farsightedness; -- called also hyperopia. Cf. Emmetropia.

A prefix signifying in, within, interior; as, intraocular, within the eyeball; intramarginal.

inner angle, or beneath the lower lid, of the eye, and capable of being drawn across the eyeball; the third eyelid; the haw.

A rapid involuntary oscillation of the eyeballs.

ne of the body, or to the associated muscles; -- applied especially to two muscles of the eyeball. -- Oblique narration. See Oblique speech. -- Oblique planes (Dialing), planes which decline from the zenith, or incline toward the horizon. -- Oblique sailing (Naut.), the movement of a ship when she sails upon some rh…

An inflammation of the membranes or coats of the eye or of the eyeball.

y some cause other than the impingement upon it of rays of light, as by pressure upon the eyeball when the lids are closed. Cf. After- image.

me for an epidemic variety of ophthalmia, associated with early and marked redness of the eyeball. -- Pink salt (Chem. & Dyeing), the double chlorides of (stannic) tin and ammonium, formerly much used as a mordant for madder and cochineal. -- Pink saucer, a small saucer, the inner surface of which is covered with a p…

together of parts; specifically, a morbid adhesion of the eyelids to each other or to the eyeball. Dunglison.

To turn; to move circularly. And his red eyeballs roll with living fire. Dryden.

Hard; firm; indurated; -- applied especially in anatomy to the firm outer coat of the eyeball, which is often cartilaginous and sometimes bony.