No inside the eye (vitreous cavity). Eyelash would be on the outside of the eye.
JCH MD
Does the lost lens go back behind the eye like an eyelash would?
Yes this is a known compllication of cataract surgery. The cataract can cut the membrane that holds it in place allowing it to drop into the back part of the eye. When this happens inflammation, pain, blurred vision, glaucoma are often problems and the course is "stormy". Often a second operation done by a retina surgeon has to be done to remove the 'dropped" cataract from the back of the eye.
JCH MD