Related topics: eyes, vision

• Can I use contact lenses that have frozen (and then thawed, perhaps multiple times)?

  Asked by petethepothead | 13 responses

• Why do the surface of objects always appear darker when they are wet?

  Asked by geniusatwork | 8 responses

• Who can benefit from Pinhole Glasses?

  Asked by pdworkin | 5 responses

• For Microbiologists, Chemists, Researchers – Can you think of a use for this material in your work?

  Asked by Lupin | 1 response

• Is there a website that can show you what nearsighted people see?

  Asked by deepseas72 | 18 responses

• I plan to buy a new telescope which one should it be?

  Asked by sandystrachan | 8 responses

• Can a lack of light cause one eyelid to never form?

  Asked by Triozoo | 4 responses

• Help with contacts?

  Asked by Kiev749 | 11 responses

• Which brand makes better fisheye lenses?

  Asked by atr408 | 7 responses

• Why do ice cubes look yellow when you put them in milk?

  Asked by petethepothead | 16 responses

• Can you explain the difference between a prime/fixed focal length lens and one where the focal length can be varied?

  Asked by tekn0lust | 4 responses

• What's with the lights/colors/motion you see when you close your eyes?

  Asked by petethepothead | 9 responses

• Rerout an IR signal to a receiver from a remote?

  Asked by XCNuse | 1 response

• Why do objects in mirrors still appear blurry for people with poor eyesight?

  Asked by paulc | 3 responses

• How does prismatic paint work?

  Asked by syz | 1 response

• What is the phenomenon that makes a spoked wheel when turning at a certain speed appear to rotate backward?

  Asked by kelly | 9 responses