Problems associated with prolonged wear soft contact lenses.

Complications of prolonged wearing of soft contact lenses are corneal infection, peripheral vascularization, giant papillary conjunctivitis and allergy, sterile ulcers, corneal warping, lens infection, protein and calcium deposits, lens fragility, and problems with disinfecting solutions. Further long-term studies are needed to compare the safety of prolonged wear soft contact lenses with the safety of intraocular lenses, on which long-term studies are currently being done.