Method of making photoprotective hydrophilic polymers and ocular

Details Method of making photoprotective hydrophilic polymers and ocular Method of making photoprotective hydrophilic polymers and ocular

1989-12-07

1993-10-12

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

351160H, 524240, 524916, 5253288, 525380, 525903, 623 6, B29D 1100, C08F 2028, F21V 900

Patent

active

052526283

ABSTRACT:
A method of making pigmented hydrophilic polymers in such a manner that the resulting polymers absorb ultraviolet and visible radiation, and that no migration, separation or leaching of the pigment can take place, is disclosed. The polymer compositions comprise blends of hydrophilic polymers with melanin pigments, the latter being synthesized on the hydrophilic polymer matrix. The disclosed polymer compositions are useful in the manufacture of ocular devices, particularly intraocular lenses and aphakic contact lenses capable of absorbing ultraviolet and visible radiation, at wavelengths between 300 and 700 nanometers, to the same extent as the natural crystalline lens of the eye. The disclosed method is also useful to impart photoprotective properties to the already made said ocular devices.

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