Assume I have some contact eye lenses which I covered with black color, so they're not transparent anymore. Then I made a tiny hole at the center of each eye lens. What kind of an image will I see if I put them on? Will it be upside-down image like camera obscura does? Will it be blurry?

Deborah Wyatt 2022-07-15 Answered
Assume I have some contact eye lenses which I covered with black color, so they're not transparent anymore. Then I made a tiny hole at the center of each eye lens. What kind of an image will I see if I put them on? Will it be upside-down image like camera obscura does?
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Answers (1)

encoplemt5
Answered 2022-07-16 Author has 15 answers
It will be dim and, assuming the eye lens is itself working ok, quite sharp. (If the eye lens is poor then the pinhole tends to sharpen the image, but to make it sharper you need a smaller pinhole, and then it gets even dimmer).
The image falling on the retina of your eye will be upside down. However, using the normal eye lens this also gives an upside-down image on the retina. The neurons of the brain then interpret this and deliver to your conscious perception the result after correcting for this, i.e. the right way up. So with the pinhole the same will happen: on your retina the image is upside down, but to your conscious perception the image is the right way up.
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