We had to give our kitty eye cream not long ago too. We had to put in in his eye, and also on a scratch underneath. He didn't mind the cream going in his eye at all, we held his lid open and just squeezed a bit in, no trouble at all, he blinked as soon as it was done and he was happy. He wriggled when we put it under his eye though so had to hold him a bit tighter.

Good luck!