Therapeutic Optometrist are primary health providers that diagnose and treat most eye issues. Optometrists provide annual eye check-ups, and prescribe glasses and contact lenses. They also treat eye infections, allergies affecting the eyes, glaucoma, and other eye diseases. They are Doctors of Optometry and are licensed in the state where they practice.
In some cases Optometrists work with Ophthalmologists, who are medical doctors qualified to do an optometry but can also perform surgeries (Lasik, treatment for glaucoma, etc.)