| OASD | ocular albinism-sensorineural deafness [syndrome] |
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| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OHS | obesity hypoventilation syndrome; occipital Horn syndrome; occupational health service; ocular histo... |
| OHT | ocular hypertension |
| OM | obtuse mental; occipitomental; occupational medicine; ocular movement; oculomotor; Osborne Mendel [r... |
| ocular myopathy | A specific type of slowly worsening weakness of the ocular muscles, usually associated with a pigmentary retinopathy. See: Kearns-Sayre syndrome, oculopharyngeal dystrophy. Synonym: ocular myopathy. (05 Mar 2000) |
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| ocular nystagmus | The pendular or, rarely, jerky nystagmus seen in severely reduced vision. Synonym: amaurotic nystagmus. (05 Mar 2000) |
| ocular onchocerciasis | Ocular complications, such as keratitis, iridocyclitis, or retrobulbar neuritis, caused by the microfilariae of Onchocerca volvulus. Synonym: river blindness. (05 Mar 2000) |
| ocular paralysis | Paralysis of extraocular and intraocular muscles. (05 Mar 2000) |
| 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) |