It is possible to measure the
optical power of reading glasses in the form of diopters. Reading glasses with
diopters unit 2.00 holds the ability to refract light that are twenty inches
away.
Diopters unit 3.00 signifies the
ability to focus on objects that are 1 foot away. Most individuals require
reading glasses of different strengths as the ability of eye deteriorates with
the gradual passage of time.
In a bid to serve human purpose, strength of reading glasses, vary in
small increments. The common diopters strengths include 1.75, 150, 1.00, 1.22
and 3.00 as well. Individuals above forty years of age require glasses with
strength 1.25.
This information is very interesting to read. Evolution in eye wear has been great so far, not only the sight less people wear today all kinds of people like to wear glasses to keep them from sun dust and for fashion. Anyway, thank you for sharing this very nice post.
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This write-up is confusing. It describes diopter 2.00 in terms of REFRACTING light 20 inches away, but then describes diopter 3.00 in terms of FOCUSING objects that are 1 foot away. Which is which? If you would describe the DIOPTER of these two examples IN THE SAME TERMS (either REFRACTING, or FOCUSING), then the reader could avoid being confused. It would also be helpful to offer two or three additional examples, such as diopters of 4.0 and 5.0, but all in the same terms (either Refraction OR Focus, but all THE SAME). If you mean to emphasize that the two terms (Refraction vs FOcus) are really just recipricals of each other (or somehow related mathematically), it would be better to do that elsewhere since it only confuses the issue here.
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