1. A curable adhesive composition comprising polyacrylate component, epoxy component, and cationic initiator, wherein the uncured adhesive is optically clear such that the luminous transmission of the composition is greater than 90%, the haze of the composition is less than 2%, and the opacity of the composition is less than 1%, wherein the uncured, curable adhesive can be cured to form an adhesive comprising an interpenetrating polymer network, and wherein after aging the cured adhesive at 90° C. for 500 hours the luminous transmission of the cured and aged adhesive is greater than 90%, the haze of the cured and aged adhesive is less than 2%, and the opacity of the cured and aged adhesive is less than 1%.