Optic neuroma
A rare benign tumor of the optic nerve.
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- Optician
A specialist in fitting eyeglasses and making lenses to correct vision problems. An optometrist performs eye examinations and writes prescriptions for corrective lenses; an optician fills that prescription.
- Optometrist
A practitioner who provides primary eye and vision care, performs eye examinations to detect vision problems, and prescribes corrective lenses to correct those problems. Some optometrists also make and fit eyeglasses, but many leave that job to opticians. An optometrist is a doctor of optometry (OD), not an MD. When an optometrist detects eye disease, […]
- OPV
Oral polio vaccine. See Polio vaccine, oral.
- OR (abbreviation)
Stands for “operating room”. A facility equipped for performing surgery. OR is sometimes written O.R.
- Oral
Having to do with the mouth. For example, an oral solution is a solution that is given by mouth.