• It’s your age. The cornea hardens as you get older and your vision starts to impair. In and around 40 is the most common age for this to happen.

  • My distance vision went to shit when I had a glaucoma test from some old school optometrist who pressed a popsicle stick against my lenses as part of the process. My eyes were tearing for months afterwards, so no, they're not all the same.

  • Aplanation tonometry shouldn't result in any form for visual impairment. It remains the gold standard in the industry. Non-contact tonometry (puff of air test) is convenient but not as reliable. You had a better test, (possibly conducted by a poorer practitioner, although this is the Internet so...)

    Edit. Or fluorescein minim? Either way.

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