| eye reflex | A red glow reflected from the fundus of the eye when a light is cast upon the retina, as in retinoscopy. Synonym: eye reflex, fundus reflex, pupillary reflex. Synonym: pyramid of light. (05 Mar 2000) |
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| eye socket | 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. Synonym: 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. Synonym: alveolus dentalis, alveolus. (05 Mar 2000) |
| eye speculum | An instrument for keeping the eyelids apart during inspection of or operation on the eye. Synonym: blepharostat. (05 Mar 2000) |
| far point of eye | <microscopy> For the normal eye, the far point is at infinity. The rays of light from an infinitely distant point source are parallel and can be focused with the accommodation muscles of the eye entirely relaxed. See: accommodation, near point of the eye. (05 Aug 1998) |
| ferret-eye | <zoology> The spur-winged goose; so called from the red circle around the eyes. Source: Websters Dictionary (01 Mar 1998) |
| fibrous tunic of eye | The outer layer of the eyeball composed of the sclera and cornea. Synonym: tunica fibrosa bulbi, tunica externa oculi. (05 Mar 2000) |
| fish eye disease | <disease> An inherited disorder resulting in low HDL cholesterol and corneal opacities; also, low LCAT activity. (05 Mar 2000) |
| fixing eye | The eye, in cases of strabismus, that is directed toward the object of regard. (05 Mar 2000) |
| fluorescein eye examination | A special test that allows the examiner to detect cornea abrasions or corneal foreign bodies. An orange dye (fluorescein) is placed into the eye and the eye is illuminated with a cobalt blue light (black light). This serves to highlight any irregularities in the corneal surface. (27 Sep 1997) |
| lateral angle of eye | The angle formed by the junction of the lateral parts of the upper and lower eyelids. Synonym: angulus oculi lateralis, angulus oculi temporalis, external canthus, lateral canthus. (05 Mar 2000) |
| lazy eye | An eye that diverges in gaze. More formally called strabismus. Can be esotropia (cross-eyed) or exotropia (wall-eyed). (12 Dec 1998) |
| lens, eye | <microscopy> The lens in an eyepiece nearest to the eye. (05 Aug 1998) |
| light-adapted eye | An eye that has been exposed to light, with bleaching of rhodopsin (visual purple) and insensitivity to low illumination. Synonym: photopic eye. (05 Mar 2000) |
| Listing's reduced eye | A representation that simplifies calculations of retinal imagery: radius of anterior refracting surface, 5.1 mm; total length, 20 mm; distance of nodal point to retina, 15 mm. (05 Mar 2000) |