Ophthalmology
The art and science of eye ?medicine.
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- Ophthalmoscope
A lighted instrument that is used to examine the inside of the eye, including the retina and the optic nerve.
- Ophthalmoscopy
Examination of the interior of the eye, including the lens, retina and optic nerve, by indirect or direct ophthalmoscopy. Indirect ophthalmoscopy employs a head lamp device to shine a very bright light into the eye. This is generally done by an ophthalmologist. Direct ophthalmoscopy is in more common usage. The examiner uses a device the […]
- Opiate
A medication or an illegal drug that is derived from the opium poppy or that mimics the effect of an opiate (a synthetic opiate). Opiate drugs are narcotic sedatives that depress activity of the central nervous system, reduce pain, and induce sleep. Side effects may include oversedation, nausea, and constipation. Long-term use of opiates can […]
- Opiate agonist maintenance
Methadone treatment program.
- Opioid
1. A synthetic narcotic that resembles the naturally occurring opiates. 2. Any substance that binds to or otherwise affects the opiate receptors on the surface of the cell.