When an eye is pseudophakic, the natural lens has been surgically removed and replaced by an artificial lens - an implant. These days the implant procedure is undertaken as soon as the opaque lens (cataract) is removed. Before this combined procedure became widely popular, with the introduction of artificial lenses, the natural lens was removed and the vision was corrected with spectacles and contact lenses- the eye being known as aphakic. *Please read senile cataracts, traumatic cataracts and congenital cataracts.
The bulging outward of the cornea (keratoconus), a malfunction of the cornea's inner layer (Fuchs' dystrophy), and painful corneal swelling (pseudophakic bullous keratopathy).