pinhole glasses are enclosed in the rim of the lens, made of a dark plastic with many small holes.
Modern glasses in the hole appeared in the market of optical instruments at the end of the last century, and since then the heated debate about their use does not cease to view.
The perforation technology points the principle of limiting the luminous flux via holes in the lenses and the use of such physical phenomena as:
effect of improving vision while wearing glasses in the hole is achieved by the fact that when you look into the small hole man focuses his eyes on a point better vision - the so-called macula.Due to the increased
also correcting the impact perforation points due to a decrease in the luminous flux entering the eye.As a result, it reduces the amount of constriction of the pupil and the tone of the accommodation.This gives the eye muscle relaxation and increases visual acuity at distance and near sight.
However, improvement in vision observed only while wearing glasses in the hole.After removing them, the vision returned to previous levels.
ophthalmologist may recommend wearing pinhole glasses for people with hyperopia, myopia, cataracts, astigmatism, strabismus.But in glaucoma and macular degeneration to use glasses-trainers are not worth it.
Showing sunglasses in the hole and when working with small objects, text, and in those cases where some time is necessary to strongly focus vision.
pinhole glasses can be used for a while instead of the usual sunglasses.
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