| OM | obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; Osborne Mendel [r... |
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| OMD | ocular muscle dystrophy; oculomandibulodyscephaly; organic mental disorder; oromandibular dystonia |
| OMT | object modeling technique; ocular microtremor; O-methyltransferase; ophthalmic medical technician or... |
| OPDG | ocular plethysmodynamography |
| OPG | ocular pneumoplethysmography; orthopantomogram; oxypolygelatin |
| ocular paralysis | Paralysis of extraocular and intraocular muscles. (05 Mar 2000) |
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| ocular pemphigoid | A conjunctivitis with transient small vesicles, a viscid ropy discharge, symblepharon, xerosis, and trichiasis, eventually becoming bilateral. (05 Mar 2000) |
| ocular physiology | Functions and activities of the eye as a whole or of any of its parts. (12 Dec 1998) |
| ocular prosthesis | An artificial eye or implant. (05 Mar 2000) |
| ocular rigidity | The resistance offered by the eyeball to a change in intraocular volume; manifested as a change in intraocular pressure. (05 Mar 2000) |
| ocular scoliosis | Scoliosis supposed to be due to head tilting, caused by ophthalmological dysfunction. (05 Mar 2000) |
| ocular sparganosis | Infestation of the orbits with the sparganum of Spirometra mansoni; characterised by redness and oedema of the eyelids, lacrimation, and blepharoptosis; acquired by application of infected raw frog flesh against the eye as a poultice. (05 Mar 2000) |
| ocular tension | Resistance of the tunics of the eye to deformation; it can be estimated digitally or measured by means of a tonometer. (05 Mar 2000) |
| ocular torticollis | Torticollis incident to paralysis of an extraocular muscle, especially an oblique muscle. (05 Mar 2000) |
| ocular vertigo | Dizziness attributed to refractive errors or imbalance of the extrinsic muscles. (05 Mar 2000) |
| ocular vesicle | In the embryo, one of the paired evaginations from the ventrolateral walls of the forebrain from which the sensory and pigment layers of the retina develop. Synonym: vesicula ophthalmica, ocular vesicle, optic vesicle. (05 Mar 2000) |
| onchocerciasis, ocular | Filarial infection of the eyes transmitted from person to person by bites of onchocerca volvulus-infected black flies. The microfilariae of onchocerca are thus deposited beneath the skin. They migrate through various tissues including the eye. Those persons infected have impaired vision and up to 20% are blind. The incidence of eye lesions has been reported to be as high as 30% in central america and parts of africa. (12 Dec 1998) |
| toxoplasmosis, ocular | Infection caused by the protozoan parasite toxoplasma in which there is extensive connective tissue proliferation, the retina surrounding the lesions remains normal, and the ocular media remain clear. Chorioretinitis may be associated with all forms of toxoplasmosis, but is usually a late sequel of congenital toxoplasmosis. The severe ocular lesions in infants may lead to blindness. (12 Dec 1998) |
| tuberculosis, ocular | Tuberculous infection of the eye, primarily the iris, ciliary body, and choroid. (12 Dec 1998) |
| extra-ocular muscle disease | <radiology> Graves disease, pseudotumour, lymphoma, metastasis, infection, carotid-cavernous fistula, granulomatous disease (12 Dec 1998) |