Diopter adjustments can be made to the ocular lens.
Diopter (D)...
I don't know. Is less than 50 diopter
A 50mm lens has a diopter of 20.
Diopter is the unit of the power of lens
The lens with the greatest (positive) curvature. The lens with the highest diopter.
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Diopter is a unit of measurement of the power of a lens. The word "Magnify" is a verb that is defined as making something appear larger than it is with a lens or microscope.
Optical power is the degree to which the lens will converge or diverge light. The unit of measurement is the diopter and is directly related to how much a beam of light is bent by the lens.
WOW! That's a big number. I'm guessing that it's probably -.700 or -7.00 at worst. If it's -700 I'd guess you are blind. Any negative number on your correction indicates that you are near-sighted. If the number is -.700 (or -.7) it means that you are less than one diopter nearsighted. One diopter is the strength of a lens that focuses an image at 1 meter. The negative of that (-1 diopter) is just the compliment of that lens.
scanning-40x low-100x high-400x