Contact lens cleaning compositions with particles of variable ha

Details Contact lens cleaning compositions with particles of variable ha Contact lens cleaning compositions with particles of variable ha

1994-04-05

1996-12-03

McGinty, Douglas J.

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

428407, 428403, 510113, B08B 308, B08B 304, C09G 104, A61K 916

Patent

active

055803920

ABSTRACT:
Compositions and methods for treating a contact lens are disclosed. In one embodiment, the composition comprises an ophthalmically acceptable liquid aqueous medium and a plurality of particles which possess a hardness gradient. The hardness gradient of the particles is due to the particles having a relatively inelastic, water-impermeable core and a soft, water-permeable outer layer surrounding the core. The particles afford both high specific pressure on a contact lens surface and textural softness, which diminishes surface abrasion.

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