Defn: A class of star-shaped echinoderms having a disklike body, with slender, articulated arms, which are not grooved beneath and are often very fragile; — called also Ophiuroida and Ophiuridea. See Illust. under Brittle star.

OPHRYON
Oph"ry*on, n. Etym: [NL., fr. Gr. (Anat.)

Defn: The supraorbital point.

OPHTHALMIA
Oph*thal"mi*a, n. Etym: [F. ophthalmie, L. ophthalmia, fr. Gr. optic.
See Optic.] (Med.)

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

OPHTHALMIC
Oph*thal"mic, a. Etym: [Gr. ophthalmique. See Ophthalmia.] (Anat.)

Defn: Of, pertaining to, or in the region of, the eye; ocular; as the ophthalmic, or orbitonasal, nerve, a division of the trigeminal, which gives branches to the lachrymal gland, eyelids, nose, and forehead. Ophthalmic region (Zoöl.), the space around the eyes.

OPHTHALMITE
Oph*thal"mite, n. Etym: [Gr. (Zoöl.)

Defn: An eyestalk; the organ which bears the compound eyes of decapod
Crustacea.

OPHTHALMOLOGICAL
Oph*thal`mo*log"ic*al, a.