Interesting. My optometrist gives a very thorough eye exam, including a glaucoma test and photographing the back of the eye (retina?). He does other tests, which I can’t describe, but I’m usually there for at least 45 minutes. He is, of course, an independent optometrist. When it comes to selling frames and lenses he is very low key and puts no pressure on his patients. My wife also sees him, but like me she was buying her glasses/specs elsewhere to get the “best” price, but it seemed thar every time she did there were problems, e.g. headaches, eyestrain, blurred vision, etc., so she now buys her specs from the optometrist and she Is completely satisfied.