What do OU, OS, and OD stand for?
OD ………………… oculus dexter (the right eye)
OS ………………… oculus sinister (the left eye)
OU ………………… oculus uterque (both eyes
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OD ………………… oculus dexter (the right eye)
OS ………………… oculus sinister (the left eye)
OU ………………… oculus uterque (both eyes
How do you pronounce “uterque”
uterque — oo’TEHR’ kooeh
thanks ,,,,,
I still can’t pronounce it 🙁
oo tehr kooeh
how do i say kooeh
like koo eh?
It’s such a hard name
i was taught that OU stands for Ocular Universal
“uterque” is pronounced:
oo-tair-kway
Uterque sounds a little like ‘you turkey’
Good job, Pam!
thanks a lot for useful information.
thanks, this will help me very much
thanks a lot & how to pronounced:?’ouoo turkey’
this is very informative and interactive, no doubt everyone reading this is having fun while learning. I enjoy both the lectures and comments aswell. cheers.
When doing an exam, if I checked the right eye by covering the lefy and the left eye by covering the right, and they are both 20/20. Is it correct to put, OU 20/20 and OS 20/20? OR…can i document, OS 20/20? In other words, if they both tested 20/20, do I have to document them separately. Or can I simply put OU 20/20?
Thank you
You would put
OD 20/20
OS 20/20
OU 20/20
Please ignore my previous question. I got my letters mixed up. The question below makes better sense. Thanks
When doing an exam, if I checked the right eye by covering the left and the left eye by covering the right, and they are both 20/20. Is it correct to put, OD 20/20 and OS 20/20? OR…can i document, OU 20/20? In other words, if they both tested 20/20, do I have to document them separately. Or can I simply put OU 20/20?
Thank you
Simply write OU20/20
Visual acuity individually and together are different things. If you only document OU one eye could be blind? You also can’t assume what the OU vision is – they might have double vision for example. So its always best to document all 3 measurements. For example… OD 20/20 OS 20/30 OU 20/15
You have to document it as OD 20/20 and OS 20/20. OU 20/? means the vision you are getting without covering either eye.
The explanation is very helpful. Just wondering, “oculus dexter”, “oculus sinister” and “oculus uterque”, are they Latin or other language origins? Thanks.
Latin. Back in the day lefties were considered signs of the devil. That’s why left eye is oculus sinister
They are Latin!
OU OS and OD are for accurately documenting each or both eye, since the pronunciations are in Latin, we must understand that Latin is considered a dead language, so I feel pronunciation is not as important as understanding the symbolism.
I just started working in Patient Services in an eye care practice and have wondered all week what OS, OD and OU actually mean–thank you for answering my burning question so clearly!
If a patient’s RX reads -.25 pl OS -.25 pl OD with a 2.50 ADD and is having double vision when reading what is the medical term for the problem there are 2 ?
I made a mistake on my question:(it’s supposed to say when they have double vision watching TV ?there are 2 names for this problem,what are the names.
How do I document that eye drops were administered one drop in each eye.
igtt ou??
Yes Liz… That is correct
Great job buddy 🙂
I am buying contacts and the site I am buying them from is asking Right Eye (OD) and Left Eye (OS) then theres a dropdown list under each and I am rather confused what that is about? Would someone please explain to me what the drop down lists are about that have -1 to – 10? I really dont understand what its about, and I cant purchase the contacts until those fields are filled out.
OD = Oculus Dextra
OS = Oculus Sinistra
OU = Oculus Uterque.
I am also looking for the pronunciation of OU. It’s not even on howjsay.com and I have been able to find all other medical pronunciations there.
i have : OD: sphere -3.50
cylinder -0.50
axis 020
OS: sphere -2.00
cylinder -0.50
axis 175
So how many degree i have at the right eyes and the left eyes?
i have
OD. +25 sphere. -50 cylinder. 020. Axis. And. OS. + 50 sphere. -50. Cylinder. 125. Axis. And. + 200. + 200. Prism. Please make me understand. How bad my eyes are ? I would appreciate if you could explain in simple terms. Than you
Vanessa and Lajya … if you want to understand the components of your glasses prescription, you may want to watch this video lecture I created on optics:
http://www.ophthobook.com/videos/eye-optics-lecture
How sinister of the profession to carry on the notion that we lefties are somehow inferior or less able than those of us who are Dexterous. Left and Right would be clearer, simpler. Not sure I like having an eye that is thought of by the trade as sinister!
Thanks for your expression. I was looking for those abbreviations while seating in a waiting hall for my son who will undergo eye surgery. He is a lefty. I was rather shocked to see the word ‘ sinister’
this is the first time to know these abbreviation many thanks for your help
thanks dear firend
oh thankyou
Wonderful to know what these OD’s and Os etc mean
Very fine explanations. No more guessing for me. The Southpaw thing helps remember OS
Thanks a lot it is very useful for me
what is O.E
i had a medical examination and i heard the doctor said .5 OU.. what does that mean?
It is read as OO-TER-KWE , Oi-KU-LUS (yes, Oi) OO-Ter-Kwe.
Macky: The doctor was describing the “cup-to-disk ratio” to describe your optic nerve. A large ratio, such as 0.6 or higher, is a potential sign of glaucoma. You can read more about cupping here.
Great and lucid explanations
This was really great how you explained all these symbols and the comments. This could not be any better. Thank You
Sorry to nitpick, but it should be “oculi uterque”.
Oculus dexter = right eye
Oculus sinister = left eye
Oculi uterque = both eyes
(“Oculus uterque” = “both eye”)
I’ve always pronounced uterque as “you-TER-kwey”, but I guess “ooh-TER-kwey” is probably truer to the original Latin pronunciation.
Love the site and purchased your OphthoBook by the way Dr. Root – keep up the amazing work!
Does ‘OCULUS’ mean the actual eyeball or the glass proscription
Dr. Tim I owe you a lot for learning from your book. I thank you so much for your holy service to students like me without expecting anything.
What does OC stand for.Thanks.
good questions and answers
LOL “you turkey” is the most helpful comment on here.
Thanks for answering my simple question right away on OD/OS
excellent discussion
LOL! THNZ SO MUCH!
thank you …….yes
Oculus dexter = right eye
Oculus sinister = left eye
Oculi uterque = both eyes
(“Oculus uterque” = “both eye”)
and what ….every other day
Thank you very much for teaching me the abbreviations.
Amazing! Thank you Doctor for the very useful video.
Across the pond it is RE rt eye
LE BE both eyes!
Thanks a lot, it is very helpfull mee
The pronunciation for Uterque is, U Turk.
Good site.
Specially reading YOU TURKEY joke?
Oculus dexter (right eye), the hand of God, being dexterous
Oculus sinister = left eye, being the devil, who is sinister
Oculi uterque = both eyes
A good way to remember which one is which.
I read the comment regarding OS OD OU and found very valuable. Thanks
Very valuable information about optho
Oculus uterque actually means “each eye,” and therefore should not be pluralized. Oculi ambi would be the correct syntax for “both eyes;” however, in common parlance we use OU as “both eyes.”