Which eyes does OD and OS stand for in contacts/glasses prescription?

Question

which eyes does OD and OS stand for in contacts/glasses prescription?

Answer 1

In Contact Lens and Glasses prescription OD means Right Eye and OS means left eye.

If u want to remeber this,since in alphbets D comes before S,so first right  then left eye.

Answer 2

OD stands for oculus dexter which is latin for "right eye" and OS stands for oculus sinister which is latin for "left eye"

Answer 3

OD right eye, OS left eye