Question

what is meant by reading a lens ?how is image formed in it what is the nature of image​

Answer 1

Explanation:

When you look at your prescription for eyeglasses, you will see numbers listed under the headings of OS and OD. They are Latin abbreviations: OS (oculus sinister) means the left eye and OD (oculus dextrus) means the right eye. ... For example, if your prescription says -1.00, you have one diopter of nearsightedness.