Eye Care Plastic Dioptric Pinhole Grid Glasses

Eye Care Plastic Dioptric Pinhole Grid Glasses

Pinhole glasses are not made of glass at all but of an opaque substance such as metal or plastic. The user looks through any of the many small holes in the material. These holes have the effect of reducing the width of the bundle of diverging rays coming from each point on the viewed object. Normally, the full opening of the pupil admits light. It is the improper bending of the outermost rays in that pencil of light which causes refractive errors such as myopia, hyperopia (farsightedness), presbyopia (diminished focusing range with age) and astigmatism to be noticeable. Pinholes can bring about clearer vision in all these conditions. By blocking these peripheral rays, and only letting into the eye those rays which pass through the central portion of the pupil, any refractive error in the lens or cornea is not noticed as much. The pupil may be wide open, but only the central portion is receiving light. The improvement in visual acuity can be striking.

Look at this drawing of a myopic eye with a pinhole lens in front of it. You will see that the eye does not need to deal with the rays that would need the most bending since they are blocked by the lens.

                                     Pinhole Lens

Features
1. No optometry: no optometry, no harm cause by inaccurate optometry mirror. Only to be wore for class, reading, writing and watching.
2. Adjustable sizes: If the width of the pinhole glasses is not nor suitable, the shape and size can be changed by putting the two sides into hot water for a while.
3. Pinhole glasses is very safe way to recover your eyesight and relieve eyestrain. (Many users feel their eyesight has been improved since wore pinhole glasses for a short period as well as eyestrain.)
4. Pinhole glasses could be used both interior and exterior for reading, computer and watching

Functions
1. Adjust and correct various poor visions: correct different poor vision problems, such as short eyesight, astigmia, presbyopia etc. cause by ametropia and dysregulation.
2. Release eyestrain, nervousness and spasm of the eyes’ adjust system to prevent and cure the short-eyesight of teenagers.
3. Effective improvement for short-eyesight teenagers.
4. Effective short-eyesight precaution measure for non-short-eye sighted teenagers.
5. Protect and improve eyesight: Except improve eyesight, wear pinhole glasses can prevent the direct eye harm by partial TV screen rays 

Usage
3-5 times/day and appro. 15mins/time, wear it in suitable times, eg. When using computer or TV. It is better for the short-eye sighted to look far away objects and space when at the early period of pinhole glasses wearing. Double image is normal for the short-eye sighted when view the object and space in short distance at early wearing period, and which will disappear in the 3-7 days adjustment period.

Notes
1. The pinhole glasses shall not be wore when doing activities like driving, riding and other movements.
2. Never look directly at the sun when with pinhole glasses.
3. It is unnecessary to wear pinhole glasses when view nearby objects (within 30cm.)
4. It is better to wear pinhole glasses 30-60ms/day for watching or class.
5. Poor light or bad reading posture at closing distance will influence focus ability and exhaust eyes.

Product pictures