Optical element for correcting color blindness
Described herein are devices, compositions, and methods for improving color discernment.
1. A device for correcting a vision deficiency related to color discernment comprising an optical element:
wherein the optical element is an intraocular lens, a contact lens, an electronic display, or an item of eyewear comprising:
a composition comprising rhodamine 6G in an amount of about 4% (w/w) to about 6% (w/w) and a polymer that is poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) having an average molecular weight in a range of about 170,000 g/mol to about 250,000 g/mol, and in an amount of about 90% (w/w) to about 96% (w/w);
wherein the composition is solid.
2. The device of claim 1 , wherein the optical element has a peak wavelength of visible absorption of about 520 nm to about 540 nm and a peak wavelength of visible emission of about 550 nm to about 570 nm.
3. The device of claim 1 , wherein the rhodamine 6G is about 2% (w/w) to about 10% (w/w) of the composition.
4. The device of claim 1 , wherein the polymer is a combination of repeat unit a, repeat unit b, and repeat unit c:
wherein R o and R p are independently H or C 1-5 alkyl; and
wherein repeat unit a is about 80% of the weight of the polymer, repeat unit b is about 17% to about 20% of the weight of the polymer, and repeat unit c is about 0.01% to about 3% of the weight of the polymer.
5. The device of claim 4 , wherein R o is CH 2 CH 2 CH 3 .
6. The device of claim 4 , wherein R p is CH 3 .
7. The device of claim 1 , wherein the optical element has a median wavelength of visible absorption of about 510 nm to about 550 nm.
8. The device of claim 7 , wherein the optical element has a median wavelength of visible emission of about 540 nm to about 580 nm.
9. The device of claim 1 , wherein the optical element has an average wavelength of visible absorption of about 510 nm to about 550 nm.
10. The device of claim 9 , wherein the optical element has an average wavelength of visible emission of about 540 nm to about 580 nm.
11. The device of claim 1 , wherein the optical element has a peak wavelength of visible absorption of about 510 nm to about 550 nm.
12. The device of claim 11 , wherein the optical element has a peak wavelength of visible emission of about 540 nm to about 580 nm.
13. The device of claim 1 , wherein the optical element is an intraocular lens.
14. The device of claim 1 , wherein the optical element is a hard or soft contact lens.
15. The device of claim 1 , wherein the optical element is an electronic display.
16. The device of claim 1 , wherein the optical element is an item of eyewear.
17. The device of claim 16 , wherein the item of eyewear is eyeglasses or sunglasses.