The whole eye transplant
is not possible because the optic nerve
once cut and damaged cannot
regenerate. However different parts of the eyes can be utilized once it is donated.
Like - the cornea
which is used the most for transplant,
- the sclera for ptosis
(upper lid drooping) correction surgeries.
- recently,the retinal transplants for macular dysfunction is under research
- and the rest ,for research purposes depending on the condition of the tissue removed.
Whole eye transplant is still under research due to optic nerve involvement.
If you read any other updated article do share some information.