Yes there is a special tape to be used. Scotch tape has a glue that may bother his eyes even worse. Go to the drug store and buy the 1/2 inch paper first aid tape for sensitive skin. That will work better and is not as likely to bother the skin or cause irritation to the eye.
Put the tape on the cheek first and then close the eye. Pull upon the tape and then tape it to the forhead. This works best to keep the lid closed when he sleeps.
Funny story about lid taping. First it makes you look sexy as all get out all taped up like that. But one night when I had to tape my eyes Jan, woke me to look at something quick. Tried to open my eyes and couldn’t. Was still half asleep and tried to open them without removing the tape. Did some crazy contortions and hurt like heck. So if you need to open your eyes please remove the tape first. It will go back.
Latter
Jake