PINHOLE GLASSES BIFOCAL AND TRAINING BOOK -Bestseller

Book "Pinhole Glasses - Eye training not just for those who wear glasses"

 Paperback, new, 2008, 32 pages

Visiovital – Verlag   ISBN 978 - 3 - 00 - 025273 – 0

Bestseller in Germany, more than 50 000 copies sold

author:    Wolfgang Hätscher-Rosenbauer, German Vision Trainer

Wolfgang
Hätscher-Rosenbauer:
Pinhole Glasses
An exercise programme for
the prevention and treatment
of defective vision.
Comprehensive instructions
for eye exercises with pinhole


Clear vision at last
Problems with eyesight continue to increase.
Glasses and contact lenses correct defective
vision but they do not improve the eyesight.
Pinhole glasses (glasses with a lattice of
holes made of dark plastic) help train the
eyes in a natural way. Whoever wears the
pinhole glasses regularly, in the office or at
leisure, and carries out the suggested exercises
with these glasses will soon improve the
quality of his eyesight.
Suitable alike for the near or far-sighted as
well for all who have to work at computer
monitors.
Eye training – not just for those who wear glasses

Content:

Healthy sight with Pinhole glasses      2             Training programme                             8

What are pinhole glasses?                    2             Acclimatization                                       9

How do they help                                    4             Daily exercises                                     16

An alternative to glasses?                    6             Exercises for the visually Impaired    25

       About this book/index                          32

Healthy sight with pinhole glasses

Work on the computer is inevitable today and consequently often overtaxes the eyes.

Eighty percent of those working in modern observation systems (e.g. flight security), who need to keep their eyes on several monitors at once, complain of increased eye fatigue, and sixty percent experience a burning sensation in their eyes at the end of the day.

Eyestrain is on the increase

In our modern information society the eyes are the most used and most overburdened sense organs.

Researchers have indicated that we absorb eighty to ninety percent of all information about our environment with our eyes. In addition the visual flood of data through the printed media, television, the computer, info-terminals etc. is increasing and places extremely one-sided demands on our sight. Thus when working before the computer screen only thirty-five percent of the visual functions involved in the sight process are used, and sixty-five percent of the perceptive faculty of our visual sense are used but rarely or not at all. Those who spend a lot of time reading, working on the computer or watching television, tax their eyes one-sidedly, forget other ways of seeing and limit the diverse possibilities of visual perception.

What are pinhole glasses?

Instead of optical corrective spectacles pinhole glasses are dark concave plastic lenses with lots of tiny holes. They are reminiscent of the compound eye of a fly. Indeed, even for those with defective vision, when looking through pinhole glasses the picture consists of a multitude of very sharply focussed segments. After a certain period of adjustment and increased agility of the eye muscles, the brain assembles these individual segments into a complete picture where the lattice pattern is no longer noticeable.

An age-old principle

Pinhole glasses are not a new invention. Their precursors can be found in the discs made out of wood, bone or mussels with a narrow slit that, for instance, the Eskimos made long ago so as to reduce the incidence of light and increase the effect of contrast in such sunny regions.

Sri Lanka’s “Poor man’s glasses”

During a several-month stay in Sri Lanka in 1980 I discovered some pinhole glasses in a small shop in Colombo with a wooden frame and earpieces. Instead of glass there were many rows of horizontal and vertical black threads that formed a grid-like mesh. When I put these glasses on I was amazed that I could see more clearly through this grid than without my glasses. I was told that these were the poor man’s glasses in Sri Lanka, for those who could afford no other spectacles. Apart from their ugliness they obviously served their purpose.

Stenopaeic spectacles

In ophthalmology pinhole glasses are known as stenopaeic spectacle. They are prescribed in certain cases for hunters who normally wear bi - or vari-focal glasses. These cannot be used when aiming a rifle, as looking close to (back and front sight) and then into the distance (to the target) the head must move so as to look through the close and distant sections of the lens. This excessive movement makes it impossible to aim accurately. With stenopaeic spectacles (pinhole glasses) this is possible as long as there is enough light: on account of the small hole the depth of filed is raised and both the near and distant areas can be seen clearly at the same time.

How do pinhole glasses help?

Those parts of our eyes that in a relaxed condition concentrate and let light through (the cornea, aqueous humour, pupil, lens and vitreous body) build a sharp inverted image upon the retina. Where vision is defective or the eyes are stressed this does not happen or not for every distance.

In temporary stress situations or with short or long sight the rays of light are not concentrated on the retina, but fall short or overreach it (see the diagram on the opposite page).

Glasses and contact lenses refract light

Seen often as the only possible way to correct vision, optical aids (glasses with plus or minus lenses, bi- or multi-focal spectacles or contact lenses) are cut in such a way that the light is  refracted so that the eyes can receive a sharp image upon the whole area of the retina without effort or having to change their condition, and therefore the sight does not improve. 

Pinhole glasses select and concentrate the light

With the pinhole glasses the light falls through the small holes in front of the eyes without refraction and is thus concentrated and aligned. Thus only such rays of light steam into the eyes that are directed to the very centre of the retina – to the fovea centralis or macula, the point of sharpest acuity. The rest of the light is held back by the opaque lens (see the diagram). The fragmentary image stimulates the brain to use the eye muscles to do the rest of the focussing.