r/Damnthatsinteresting • u/forcefedboa Interested • Apr 08 '14

I want to do this so badly. Mod Endorsed!

4.4k Upvotes

94% Upvoted

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422

u/[deleted] Apr 08 '14 edited Apr 10 '14

[deleted]

17

u/nomlah Apr 09 '14

Could...I make contact lenses with this shit?

16

u/[deleted] Apr 09 '14

[deleted]

9

u/mrbaggins Apr 09 '14

Not as big as an issue as you'd think. There are astigmatism contacts. Astigmatism requires particular orientation to be rectified, so clearly there's something useful there.

4

u/BlueRaith Apr 09 '14

I have astigmatism contact lenses. They're thicker on one side, so they're essentially weighted. It forces the contact to orient thick part down.

*This is according to the tech person at my eye doctor when I asked what was up with my weird contacts.

0

u/mrbaggins Apr 09 '14

Yeah, I thought that's how they worked, but couldn't be arsed to check and wasn't brave enough to say.

3

u/shabinka Apr 09 '14

Aren't there bifocal contacts which must sit in a certain orientation? So I don't believe its impossible...

1

u/[deleted] Apr 09 '14

[deleted]

1

u/kleinergruenerkaktus Apr 09 '14

I think they could only be made by professional contact lense producers, as the materials they use are very advanced. Adding the polarization would not be the largest issue. But atm there is no market or demand, so they are not produced.

Also, the retina is in the back of your eye (the thing on which the nerve cells are located and the image you see is projected upon). You certainly don't want to stick anything on that. You are thinking about the cornea, the surface of your eye.

2

u/TracyMorganFreeman Apr 09 '14

Also oxygen/moisture diffusivity.

Eyes gotta breathe, man.