In our Setup in Zambia one rule which we used to have was: as soon as OSSN involves a caruncle or conjunctival fornices, the eye (no matter how good it could see) should be planned to exenteration or at least extended enucleation). I used to not to question this practice in the abscence of MRI at hand.
However, fellows from Duisburg (Germany) proved that an excision of forniceal OSSN can still be good compensated with buccal or amniotic mucous membrames. And recurrencies of ~30%. Which is actually not bad considering the mutilating alternative. A food for thought. https://pubmed.ncbi.nlm.nih.gov/35940212/