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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. M

    Binoculars and glasses/contact lenses

    Try this. https://www.eyemyeye.com/vision-tests/astigmatism/
  2. M

    Binoculars and glasses/contact lenses

    The diopter setting compensates for any refractive difference between your two eyes. The focus knob is used to move the image onto your retinas, so you see it as being "in focus".
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