| eye capsule | A condensation of connective tissue on the outer aspect of the sclera from which it is separated by a narrow cleftlike episcleral space; the sheath is attached to the sclera near the sclerocorneal junction and blends with the fascia of the extraocular muscles. Synonym: vagina bulbi, capsula bulbi, eye capsule, fascia bulbi, sheath of eyeball, Tenon's capsule, vagina oculi. (05 Mar 2000) |
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| eye-closure pupil reaction | A constriction of both pupils when an effort is made to close eyelids forcibly held apart. A variant of the pupil response to near vision. Synonym: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillary reflex, Westphal-Piltz phenomenon. (05 Mar 2000) |
| eye-closure reflex | General term for reflex closure of eyelids caused by any stimulus. Synonym: eye-closure reflex. (05 Mar 2000) |
| eye colour | Colour of the iris. (12 Dec 1998) |
| eye cup | A small oval receptacle used to apply a liquid to the external eye. (05 Mar 2000) |
| eye diseases, hereditary | Transmission of gene defects or chromosomal aberrations/abnormalities which are expressed in extreme variation in the structure or function of the eye. These may be evident at birth, but may be manifested later with progression of the disorder. (12 Dec 1998) |
| eye drops | See: eyewash, ophthalmic solutions. (05 Mar 2000) |
| eye-ear plane | A standard craniometric reference plane passing through the right and left porion and the left orbitale; drawn on the profile radiograph or photograph from the superior margin of the acoustic meatus to the orbitale. Synonym: auriculo-infraorbital plane, eye-ear plane, Frankfort horizontal plane, Frankfort plane, infraorbitomeatal plane. (05 Mar 2000) |
| eye enucleation | The surgical removal of the eyeball leaving the eye muscles and remaining orbital contents intact. (12 Dec 1998) |
| eye evisceration | The surgical removal of the inner contents of the eye, leaving the sclera intact. It should be differentiated from orbit evisceration which removes the entire contents of the orbit, including eyeball, blood vessels, muscles, fat, nerve supply, and periosteum. (12 Dec 1998) |
| eye floaters | One or more spots that appear to drift in front of the eye, caused by a shadow cast on the retina by vitreous debris or separation of the vitreous humour from the retina. (27 Sep 1997) |
| eye haemorrhage | Intraocular haemorrhage from the vessels of various tissues of the eye, e.g., choroidal haemorrhage and retinal haemorrhage. It is to be differentiated from retrobulbar haemorrhage which refers to haemorrhage within the orbital cavity behind the eye. (12 Dec 1998) |
| eye infections | Infection, moderate to severe, caused by bacteria, fungi, or viruses, which occurs either on the external surface of the eye or intraocularly with probable inflammation, visual impairment, or blindness. (12 Dec 1998) |
| eye infections, bacterial | Infections in the inner or external eye caused by microorganisms belonging to several families of bacteria. Some of the more common genera found are haemophilus, neisseria, staphylococcus, streptococcus, and chlamydia. (12 Dec 1998) |
| eye infections, fungal | Infection by a variety of fungi, usually through four possible mechanisms: superficial infection producing conjunctivitis, keratitis, or lacrimal obstruction; extension of infection from neighboring structures - skin, paranasal sinuses, nasopharynx; direct introduction during surgery or accidental penetrating trauma; or via the blood or lymphatic routes in patients with underlying mycoses. (12 Dec 1998) |