- #1
mikeinco
- 4
- 0
I am not sure of the right group for my question.Medical seems like a place to start.
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I am monocular with an advancing cataract and macular pucker.
Glasses with a corrective plastic lens help me see somewhat better.
A pair of tinted No IR UV shields in front of the glasses sharpens my focus further.
They improve contrast. The tint is about 50% transmittance, orange.
Another plastic lens, clear, in the front of those two, like safety glasses or clear NoIR UV shields, sharpens my focus even more.
None of my treating professionals have a clue why such stacking of plastic lenses improves my vision. My guess is there is an answer in the physics of optics?. Perhaps collimating the light more with each lens in the stack bring greater clarity?
The improvement happens with both print and screen reading.
I found some explanation in microscope notch filters, namely the “optical density” of a filter. If I understood it correctly increasing the concentration of the filter dye and or increasing the thickness narrows the notch. A sharper notch mean sharper vision? I also thought that the stack is increasing the UV blocking too?
The practical side of my physics-curiosity lies in finding solutions that will help me see better as my vision further decays – and - keep out of risky surgery for as long as possible.
Thank you for any thoughts, suggestions, and guidance.
Michael
----
I am monocular with an advancing cataract and macular pucker.
Glasses with a corrective plastic lens help me see somewhat better.
A pair of tinted No IR UV shields in front of the glasses sharpens my focus further.
They improve contrast. The tint is about 50% transmittance, orange.
Another plastic lens, clear, in the front of those two, like safety glasses or clear NoIR UV shields, sharpens my focus even more.
None of my treating professionals have a clue why such stacking of plastic lenses improves my vision. My guess is there is an answer in the physics of optics?. Perhaps collimating the light more with each lens in the stack bring greater clarity?
The improvement happens with both print and screen reading.
I found some explanation in microscope notch filters, namely the “optical density” of a filter. If I understood it correctly increasing the concentration of the filter dye and or increasing the thickness narrows the notch. A sharper notch mean sharper vision? I also thought that the stack is increasing the UV blocking too?
The practical side of my physics-curiosity lies in finding solutions that will help me see better as my vision further decays – and - keep out of risky surgery for as long as possible.
Thank you for any thoughts, suggestions, and guidance.
Michael
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