3 Glasses Exercise Eye Care Pinhole Pin Hole Vision Improve Eyewear Eyesight

Description

This listing is for 3 pairs of Pinhole Glasses for Improving Vision and Reducing Eye Strain
Features:
It is now widely accepted that small hole glasses do improve vision for suffering with refractive error eye disorders. Even ophthalmologists use small hole equipment
to  check eyes for refractive disorder.
Also known as s
tenopeic glasses
, these eyeglasses have
a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens.
Similar to the workings of a pinhole camera,
each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion
on the retina and increases depth of field
In eyes with refractive error, t
he resulting image becomes sharper. However, a second effect may appear at the common bridge between each two adjacent holes, whereby two different rays of light coming from the same object (but each passing through a different hole) are diffracted
back toward the eye and onto different places on the retina.
Frequent substitution of prescription glasses (TV, computer, reading) with pin-hole glasses such as these will typically result in improved vision.
Specifications:
Material: Resin
Color: Black
Item Length: 14cm / 5.51in
Lens Length: 6cm / 2.36in
Lens Width: 4cm / 1.57in
Temple Length: 11.5cm / 4.53in
Bridge Width: 3cm / 1.18in
Item Weight: 24g / 0.84oz
Package Size: 24.5 * 8 * 4cm / 9.65 * 3.15 * 1.57in
Package Weight: 26g / 0.91oz