Getting Stronger: Discussion Forum

Discussion Topics => Rehabilitation => Topic started by: johnlink on March 06, 2013, 07:04:01 AM

Title: Pinhole glasses
Post by: johnlink on March 06, 2013, 07:04:01 AM
I've never used pinhole glasses but I sometimes create a single pinhole with my right hand in order to read something I couldn't otherwise read, such as fine print on CD packaging. I wonder whether anyone here has used pinhole glasses, and if so, whether you found that they helped you to improve.

I also wonder whether it might be effective to gradually increase the size of the pinholes. If I slightly enlarge the single pinhole created by my hand a small amount of blur will be introduced, which I presume would be motivation for my brain to remove, just as reading just outside the blur point is, and just as having a slightly under-corrected pair of distance glasses or contacts is. So the strategy I see is to start with the pinholes as they are drilled by the manufacturer, which presumably gives a sharp image, and then to ever so slightly enlarge the holes so that there would be a just-noticeable blur. When a sharp image could be seen the pinholes would again be enlarged. If one were able to repeat the sequence many times eventually the holes would be quite large, the pinhole effect would be absent, and a large improvement in vision would have been made.

I'm buying a pair today!
Title: Re: Pinhole glasses
Post by: Todd Becker on March 06, 2013, 08:57:12 AM
John,

Pinhole glasses reduce blur by a different principle than convex or concave lenses.  They dramatically increase the depth of field of focus, rather than shifting the focal plane.  The question then becomes whether the kind of reduction in defocus generated by pinhole glasses will act as an adequate stimulus to the eye to change its shape.  The neurology of the eye needs to pick up some indication of the direction in which it must change to bring the focal plane of the image into alignment with the sensory layer of the retina that detects focus.

I think your idea of gradually widening the pinhole might just work.  At a certain critical pinhole size, ordinary reading material would lie right at the outer edge (for myopes) of the depth of field.  Changes in the shape of the eye to shorten axial length would then extend this edge of the depth of field, and provide a positive stimulus to remodelling of the eye.

The ideal pinhole glasses would have adjustable center holes.  Short of that, you'd have to find a way to carefully drill out the holes to make them progressively larger as you improve.

It's a great experiment.  Let us know how it goes!

Todd
Title: Re: Pinhole glasses
Post by: johnlink on March 06, 2013, 09:37:10 AM
Pinhole glasses reduce blur by a different principle than convex or concave lenses.  They dramatically increase the depth of field of focus, rather than shifting the focal plane.  The question then becomes whether the kind of reduction in defocus generated by pinhole glasses will act as an adequate stimulus to the eye to change its shape.  The neurology of the eye needs to pick up some indication of the direction in which it must change to bring the focal plane of the image into alignment with the sensory layer of the retina that detects focus.

I think your idea of gradually widening the pinhole might just work.  At a certain critical pinhole size, ordinary reading material would lie right at the outer edge (for myopes) of the depth of field.  Changes in the shape of the eye to shorten axial length would then extend this edge of the depth of field, and provide a positive stimulus to remodelling of the eye.

Yup!

Quote
The ideal pinhole glasses would have adjustable center holes.  Short of that, you'd have to find a way to carefully drill out the holes to make them progressively larger as you improve.

I have a set of drill bits something like this: http://ecx.images-amazon.com/images/I/51G0THLeIQL._SL500_AA300_.jpg The increment of 1/64" will probably be small enough to create a just-noticeable difference in blur that the brain can then resolve.

Quote
It's a great experiment.  Let us know how it goes!

You can count on that!
Title: Re: Pinhole glasses
Post by: OtisBrown on March 06, 2013, 10:26:50 AM
Hi John,

I have some "pin-hole" glasses.  In bright light - they work by increasing the "depth-of-field" by about 2 diopters.  Thus if you have your Snellen "up", and are reading the 20/100 line - you could probably read the 20/30 line THROUGH the pin-holes.  But the problem is that your DIRECTION of sight is limited to about +/- 30 degrees.  You could not wear them for active sports.  I wore them to see how they worked.  But I did not wear them beyond that point.  For me, if I measured my refractive STATE at -1.0 diopters - myself, to read the 20/20 line - I would just order the $10 minus lenses from Zenni and use them only for driving a car (I must always be legal).  But, I would depend on  my ability to wear the plus, until I began to substantially exceed the 20/40 line - so I could pass the DMV, and not be required to wear a minus for driving a car.  But even then, I would wear the plus - until I got very close to, and exceeded the 20/25 line.
Title: Re: Pinhole glasses
Post by: johnlink on March 06, 2013, 03:49:48 PM
I just ordered a pair of pinhole glasses that will arrive in about a week.

http://www.amazon.com/Natural-Eyes-Glasses-Black-Frame/dp/B000K7AH4C/ref=sr_1_3?ie=UTF8&qid=1362613678&sr=8-3&keywords=pinhole+glasses
Title: Re: Pinhole glasses
Post by: johnlink on March 14, 2013, 08:31:01 PM
The pinhole glasses arrived yesterday. While I can read my computer monitor with them over my otherwise naked eyes, it's rather unpleasant. The honeycomb makes reading difficult unless I move my head left to right, and it is difficult to find my cursor because it can hide behind the honeycomb. Perhaps they will be more pleasant to use for vision training while watching TV. We'll see.
Title: Re: Pinhole glasses
Post by: Todd Becker on March 14, 2013, 10:02:07 PM
I'll be interested to hear how they work for you.
Title: Re: Pinhole glasses
Post by: PhilippK on March 18, 2013, 05:25:01 AM
You could also try to wear a plus underneath the pinholes, although that maybe too cumbersome.
Title: Re: Pinhole glasses
Post by: johnlink on March 18, 2013, 05:38:37 AM
I'll be interested to hear how they work for you.

Because of all the honeycomb I do not at all like using the pinhole glasses for working on the computer or for other reading. I have not yet tried them for watching TV but I expect I won't like them for that use either, for the same reason. We'll see.
Title: Re: Pinhole glasses
Post by: johnlink on March 18, 2013, 05:39:51 AM
You could also try to wear a plus underneath the pinholes, although that maybe too cumbersome.

Why do you suggest that? How do you think it might be useful?
Title: Re: Pinhole glasses
Post by: PhilippK on March 18, 2013, 05:48:29 AM
Wearing the plus underneath would bring your far point in, thus challenging your eyes. I think it would be simpler than drilling holes wider.
Title: Re: Pinhole glasses
Post by: johnlink on March 18, 2013, 05:59:32 AM
Wearing the plus underneath would bring your far point in, thus challenging your eyes. I think it would be simpler than drilling holes wider.

That makes sense, except then there seems to be no reason to use the pinhole glasses.
Title: Re: Pinhole glasses
Post by: PhilippK on March 18, 2013, 06:21:14 AM
Wearing the plus underneath would bring your far point in, thus challenging your eyes. I think it would be simpler than drilling holes wider.

That makes sense, except then there seems to be no reason to use the pinhole glasses.

No if you use a light plus you should still be able to see clear enough through the pinholes.
Title: Re: Pinhole glasses
Post by: johnlink on March 18, 2013, 06:34:07 AM
Wearing the plus underneath would bring your far point in, thus challenging your eyes. I think it would be simpler than drilling holes wider.

That makes sense, except then there seems to be no reason to use the pinhole glasses.

No if you use a light plus you should still be able to see clear enough through the pinholes.

My naked vision is about -3D myopic. With +1.75 glasses I become about -5D myopic. With pinhole glasses over the +1.75 glasses my monitor is in focus, but the set of two pairs of glasses is awkward and I no longer see the purpose of the pinholes.
Title: Re: Pinhole glasses
Post by: PhilippK on March 18, 2013, 08:40:02 AM
Wearing the plus underneath would bring your far point in, thus challenging your eyes. I think it would be simpler than drilling holes wider.

That makes sense, except then there seems to be no reason to use the pinhole glasses.

No if you use a light plus you should still be able to see clear enough through the pinholes.



My naked vision is about -3D myopic. With +1.75 glasses I become about -5D myopic. With pinhole glasses over the +1.75 glasses my monitor is in focus, but the set of two pairs of glasses is awkward and I no longer see the purpose of the pinholes.

Well when your vision has improved that could be another way to add stimulus just like when you suggested to widen the holes. I agree that pinholes are distracting, I never bothered to wear my mine for any length of time.
Title: Re: Pinhole glasses
Post by: Alex_Myopic on December 03, 2013, 01:56:42 PM
Thomas  Quackenbush about pinhole glasses:

http://www.naturalvisioncenter.com/Other.html (http://www.naturalvisioncenter.com/Other.html)

Pinhole Glasses: Another Temporary Artificial Way to See Better

    1. What are they? Pinhole glasses are an artificial way to see better due to the pinhole effect. The pinhole effect simply means that an image can be more sharply focused onto camera film or a light sensor or the retina if the diaphragm is tiny enough. In fact there are cameras that can take a picture by using only a tiny pinhole and without using any lense to focus the image. Squinting (which is a "unsightly" and harmful habit) by which a person sees better, is an example of the pinhole effect. By wearing glasses that have a black, opaque lense with lots of tiny pinholes in it a person can see better due to the pinhole effect. Basically it is a artificial "trick." A person (with blurred vision) usually sees much better in bright light and worse in darkness. This is due to the pupil's pinhole effect: a smaller pupil in the bright light = better vision.
2. Many people have reported improvement of eyesight by using pinhole glasses instead of using their regular full-power prescription glasses. However, the improvement might not be due to the pinhole glasses since many people have also reported improvement of their eyesight by simply not using their full-power prescription glasses. It is a very common, if not universal, experience that the wearing of typical, full-power prescription glasses makes eyesight worse. Many people have stated that after wearing of their full-power prescription glasses, even for just a few hours, their vision is noticeably worse when they take off the glasses. Since by simply not using full-power glasses people have reported their eyesight improving; so the use of pinhole glasses could be irrelevant to the fact that someone's eyesight has improved while using pinhole glasses!
3. Pinhole glasses are not legal for driving if a person is required to wear "prescription glasses" or "corrective lenses."
4. Pinhole glasses, like sunglasses, can block out a tremendous amount of light. This is not good. The eyes are organs of light. The pineal gland and other parts of our bodies are dependent upon light for regulating day and night rhythms. Pinholes glasses could interfere with these natural functions. One might also be concerned if the pupil dilates unnaturally larger during the daytime while wearing pinhole glasses or sunglasses. The pupil is only supposed to be large in the night (or other natural dark situations.)
5. The huge amount of black area blocking the visual field could be dangerous in some situations.
6. Some of the claims I have read those selling advertising pinhole glasses are ridiculous. In fact a number of marketers of pinhole glasses have had civil action taken against them for false advertising and unsubstantiated claims.
7. There are some serious eye problems, particularly some types of cataracts, where the use of pinhole glasses can result in a person seeing better in a way that cannot be had with regular glasses, or in any other way for that matter. This improved (artificial) sight might be due to the pinhole "tunnels" of light that can pass through the lens of the eyes without being scattered as much by the opacities of the cataract(s).
8. There are several companies marketing so-called"Bates Method" pinholes glasses. Dr. Bates never mentioned, much less used or sold, pinhole glasses.
9. What is a better and much practical alternative to pinhole glasses? Simply using reduced power glasses (Chapters 3-5 in Relearning to See.) That has been the best solution for most of our natural vision students. The money that might have been spent on pinhole glasses might be better spent on massage therapy to reduce the tension in your tight neck! There is a large connection between eyesight and the neck.
10. Bottom-line? If you want try them and find out if you derive benefit from them, particularly if you have cataracts, then fine. I would most likely buy them only if the seller has a money-back guarantee.
Remember: Relearning natural vision habits and principles all day long is the key to improving eyesight naturally. The main problem with pinhole glasses is that they do not teach anyone how to have correct vision habits and principles all day long—and that is the true "Bates Method" of natural eyesight improvement.
Title: Re: Pinhole glasses
Post by: Alex_Myopic on December 04, 2013, 01:21:01 AM
Quote
Sounds like a kneejerk reaction to me. I don't think people want to use pinhole all day long. In different parts of the world people are subject to drastically different amounts of daylight per day, yet their cases show that the human eye is highly adaptable to constraints (e.g., people don't end up with form-deprivation myopia, for instance). The pupil, for instance, gets bigger and smaller countless times during a day and doesn't necessarily stay at its "natural" size. It's not as that if it's natural then it's good.

Hi TomLu,
Tom  Quackenbush makes a long analyze in his book about the good effect in the eye, retina and hole body of natural UVA and UVB (not UVC) in contrast to many studies (cause cataract etc) and myopia lenses which block them "for our good". He even suggests eye sunning exercises. So this is what he means and not so much that the pupil gets more bigger and smaller putting on and off pinhole glasses or bigger in average during daytime when supposed to be smaller.
Title: Re: Pinhole glasses
Post by: CapitalPrince on March 15, 2014, 03:14:58 PM
i just wondered, can pinhole glasses do any harm because it artificially generates a very clear, sometimes perfect image? I also notice sometimes i feel a "strain" when i wear these glasses.