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The Downhill Slide.
When your eyes are placed behind normal prescription glasses you
fall into a trap. You no longer use the focusing muscles in your eyes to
the full. This important "ciliary muscle" begins to weaken requiring
visits to your eye doctor for stronger and stronger lenses. Reverse the
downhill slide and help develop your eye muscles now.
Inexpensive - No Prescription Required.
Pinhole Glasses are inexpensive when compared to prescription
glasses. Now you can refresh your tired eye muscles and keep the eyes
from staring - a common cause for eye fatigue.
How They Work.
Pinholes provide an infinite depth of focus so that even when
the eye is not correctly focused, objects will appear as if in focus.
Importantly they eliminate scattering of light to the retina and hence
improve vision.
The idea behind pin-hole glasses is not new. It was known
centuries ago and was used before the advent of glass lenses. The reason
they work is simple. "Light passing through a small hole (or holes) is
restricted to rays coming straight from the viewed object; these rays do
not need focusing to bring them to a point," according to Drs. Russell
S. Worrall and Jacob Nevyas in The Eye Exorcisors published in The
Health Robbers.
Just look through any pin-hole and you'll see what they mean.
When you do this, blurred images become focused. This is because the
amount of peripheral light rays (which are responsible for blurring) is
reduced. With appropriately spaced multiple pin-holes, you'll get clear
straight vision without the difficulty of concentrating on a single
hole. Regular use of these special pinhole glasses helps exercise eye
muscles and helps eyes relax at the end of a tiring day and thus has a
beneficial effect. Particularly useful for those who spend a great deal
of time looking at computer and/or TV screens, Pinhole Glasses help
retrain your eye muscles, just as other forms of exercise retrain
muscles elsewhere.
MORE ON PINHOLE GLASSES
Pinhole glasses (also known as stenopeic 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 (called a "pencil of light") 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 accommodative 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 center portion of the pupil, any
refractive error in the lens or cornea is not noticed as much. Of
course, in the case of myopia, let's not blame the lens or cornea. It is
the abnormal lengthening of the eye which is the problem.
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 Converging Lens and imagine it as the lens of the eye.
All the light rays within the outermost yellow lines make up a pencil of
light. Imagine that this bundle of light passes through one of the
pinholes while rays outside this area are blocked. You will see that the
eye does not need to deal with the rays that would need the most
bending. It is said that Scheiner first described this effect in 1573.
Those who are familiar with cameras will recognize that this is the same
principle used to increase the depth of focus by decreasing the
aperture.
An easy way to demonstrate this is to make a fist and put it up
to one eye while closing the other eye. Open the fist just enough to
create a small hole to look through. If you have a refractive error, you
should see clearer this way. This same improvement in the vision takes
place when someone squints to see more clearly. The upper and lower
eyelids cut off the rays that would normally enter the top and bottom of
the pupil and the vision improves somewhat. Since there is no similar
way to cut off rays entering the sides of the pupil, these rays still
contribute to the blurred vision. Looking through pinhole glasses
instead of squinting cuts off the peripheral rays from all sides. Since
the holes themselves are so close to the eye, they are greatly out of
focus and are not as disturbing as one might think.
After a period of getting used to them, the brain tends to ignore their presence. Also of interest is that the farther away the viewed object is, the less the pinholes are noticed. The honeycomb effect of the holes is easily noticeable when viewing a book held close to the eyes, because the eyes are focused just a short distance in front of the glasses. When looking at a distant TV, however, the holes are hardly visible at all since the eyes are focused much farther away. Also, because of the distance, you can view the entire TV screen through one hole, an obvious benefit.
One limitation of pinhole glasses is that blocking some of the light makes it more important than usual to have good lighting on the viewed object. When looking at television this is not a problem since the set makes its own light. When reading, a good lamp should be provided nearby. Another limitation is that peripheral vision is diminished, so they should not be used for driving or similar activities involving motion. As with any glasses, even sunglasses, they should not be used to stare at the sun, thinking that no harm can be done.
We do not claim that pinholes can
replace prescription glasses in every situation. Just as it would be
risky to wear ordinary glasses in situations where they could be broken
and damage the eyes, there are situations where using pinholes instead
of prescription glasses is not advisable. Use common sense and only wear
the pinholes when the limited view does not pose a risk. No one who
manufacturers or sells pinhole glasses can be held liable for misuse of
these glasses since this is beyond their control.
While pinholes are not as cheap as off-the-rack reading glasses,
they are considerable cheaper than individual prescription glasses. For
example, a person who is a little nearsighted but only needs clear
distant vision for occasional TV viewing would find pinholes a cheaper
solution than prescription glasses. There is no need to continually
throw away old pairs and buy new, stronger ones. Unless the pinholes
break, they can be used an entire lifetime.
The native people of Alaska have long used this principle by
wearing glasses with narrow slits to look through, thus blocking out
much of the glare from the sunshine reflecting off the snow and ice.
Anyone who remains in this environment for long periods during the
summer without protection can suffer from snow blindness. This painful
condition forces the person to discontinue the use of the eyes until
healing can take place. This is nature's way of protecting the eyes from
permanent damage.
Pinhole glasses are an excellent substitute for expensive bifocal glasses. They can provide good vision for any distance, both far and near.
There is a pincushion effect when
looking through the edges of prescription glasses. That is, straight
lines appear curved. This disturbing effect does not occur with
pinholes.
When you lay prescription glasses down improperly, they can
easily get scratched at the center of the lens, the very area you have
to look through. Scratching pinholes has no effect on their performance.
Some people with cataracts have given testimonials that they see
better with pinholes because the scattering of the light is diminished.
A cataract is actually one or more opacities in the lens that do not
allow the light to pass through properly but instead cause it to
scatter. By cutting off the peripheral rays, pinholes could reduce some
of this scattering and improve the vision. The only way to determine if
an individual will benefit in this way is to try the glasses.
However, the most important use for
pinholes is in an application that has until now been totally ignored,
Myopia Prevention.
When a person's eye has become abnormally long due to excessive
close work, the outermost rays come to a focus in front of the retina
and cause the blurred vision.
Imagine for a moment the common situation where a child begins to
develop myopia and can't see the blackboard clearly. The usual solution
of giving the child minus lenses is disastrous. But suppose the child
has a pair of pinholes and puts them on just to look at the blackboard.
A large area of the blackboard can be seen through just one
hole. The cost and the risk involved with minus lenses has been avoided
entirely. Suppose the child also leaves them on when reading or looking
at a computer screen. This could help greatly in preventing myopia since
the accommodative effort is reduced. For those children whose natural
farsightedness has diminished to around +0.5 diopters and are on the
verge of moving into myopia, sitting down at the school desk and putting
on the pinholes should be almost simultaneous events.
Many children might need nothing more than this to insure that
they do not develop myopia. Schoolteachers should have several pairs on
hand to lend to the students who have difficulty seeing the blackboard.
Can you imagine what the eye doctors and optical industry think
about this inexpensive solution? The fact that you don't find pinholes
in the optical stores and eye doctors don't recommend them should give
you a hint. In fact, it is just this opposition that has resulted in
government persecution of those who sold such glasses in the past. It is
both enlightening and appalling to look at some of "these cases".
Glare protection for eyes dates back to
prehistoric time. Some devices were made of bone, wood or hide, and had
slits in them to protect the eyes from the glare of the sun, snow or sea
water. These were tied round the head with strips of hide. Today a
scientific version of the glare interceptor, called by the distributor
Stenopeic (multiple-pinhole) spectacles in which 7 rows of pin-holes of
specific size and spacings are placed in a plastic opaque material are
available. These, after much experiment, were found to be valuable in
certain cases of subnormal vision.
A few examples follow of the conditions in which they have been
used successfully.
Complicated Cases
Recently a case was brought to my attention. It involved a young
serviceman whose eyes had been injured by sulfur dioxide gas. Both
corneas had been transplanted and his vision, uncorrectable with
glasses, was 20/400 in each eye -which meant he was nearly blind.
After studying the case I recommended he be given stenopeic
spectacles. With these, vision was improved to 20/70 and he could read
9-point type.
A 70 year old stockbroker had a mature cataract in his left eye
and nuclear sclerosis with a small cupuliform opacity in his right
crystalline lens. Stenopeic spectacles, by removing the disturbing
veiling glare, gave him 20/30 distant vision and permitted 4-point type
to be read without difficulty.
Other Complicated Cases
A recent case was most unusual. A 47-year old man had been
disturbed for the past two years by seeing distant objects doubled
through his only good eye. The other was amblyopic and markedly
divergent. He consulted a qualified ophthalmologist who was puzzled and
referred the patient to me. On refracting his seeing eye, I found he had
excellent correctable vision, but even with correction he still noted a
doubling of the hands on the large clock across the street and the red
dots below the numbers on the dial. With stenopeic spectacles he was
delighted to see everything sharp and with no doubling.
AMAZING EFFECT EXPERIENCED BY THE WEARERS
IN THE FIRST PLACE
You will see objects clearly through the pinholes drilled in the
lenses. Even those who have near-sightedness, farisightedness,
astigmatism, or amblyopia can see objects clearly through the small
holes. In this case, the eyeball muscles of the wearer get normalized by
themselves and the focus of the eyeball(the crystalline lens) is
adjusted. The pinholes are small plain holes.
AFTER A SHORT PERIOD
If you look at things without the glasses after wearing them for
about half an hour, you will be surprised that you can clearly recognize
even very small letters. (However, you will be soon again unable to see
distinctly).
AFTER A SHORT TIME
If you persist in wearing these glasses only a couple of hours a
day while reading books or newspapers, or watching TV, and your eye
problems are not hereditary, you will succeed in your sight-recovering
exercise, and the eyeball muscles and cystalline lenses will be
normalized.(You may not need glasses at all)
REMARKS OF AMERICAN DOCTORS ON THE INVENTION