OPT meaning in Military and Defence ?

Optometry is a specialized health care profession that involves examining the eyes and related structures for defects or abnormalities. This often involves prescribing corrective lenses and providing medical eye care such as in the United States.

Modern day Optometry includes extensive training in the diagnosis and treatment of ocular disease (by definition: Ophthalmology) in many developed countries of the world.

Optometrists (Doctors of Optometry in the United States and Canada), are health care professionals who typically provide primary eye care, both optical and medical. They diagnose and manage various vision related abnormalities including refractive error and eye disease.