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Visual acuity with eye chart at Near 15.7 inches (400 mm) and without (sc: Latin sine correctore) correctors (spectacles); Ncc is with (cc: Latin cum correctore) correctors. See Visual_acuity#Legal_definitions: VA OS Left visual acuity VA OD Right visual acuity VDU Visual display unit VF Visual field VPS Variable prism stereoscope WD
The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
nil per os: nothing by mouth AMA style avoids use of this abbreviation (spell out "nothing by mouth") NS normal saline (0.9%) 1/2NS half-normal saline (0.45%) NTE not to exceed o 2, o 2 both eyes "O 2" usually means oxygen or oxygen therapy: o.d. omni die: every day (once daily) (preferred to "qd" in the UK [10]) o.d. oculus dexter: right eye
OS: left eye (from Latin oculus sinister) orthopedic surgery: overall survival OSA: obstructive sleep apnea: OSH: outside hospital Osm: osmolarity: Osteo: osteomyelitis: OT: occupational therapy: OTC: over-the-counter drug: OTD: out the door (discharged) OTPP: oriented to time, place, and person OTTR: Organ Transplant Tracking Record OU: both ...
Oculus means eye. OS is an abbreviation for oculus sinister, Latin for left eye from the patient's point of view. OU is an abbreviation for oculi uterque, Latin for both eyes. N.B.: In some countries, such as the United Kingdom, RE (right eye), LE (left eye), and BE (both eyes) are used. Sometimes, just right and left are used.
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").
OS (Latin oculus sinister) for the left eye. OU (Latin oculi uterque) for both eyes. Usage of spectacles during the test cc (Latin cum correctore) with correctors. sc: (Latin sine correctore) without correctors. Pinhole occluder. The abbreviation PH is followed by the visual acuity as measured with a pinhole occluder, which temporarily corrects ...
OD or o.d., an abbreviation used in medical prescriptions for omne in die or "once daily" both meaning "take once every day"; Doctor of Optometry (O.D.); Oculus dexter, ocular dexter, or ocularis dexter, meaning "right eye" in general ophthalmologic or optometric usage, particularly in eyeglass prescriptions