I am not aware that there is a place in the Liturgy where the priest makes a sign of the cross on his eyes?
If you mean: Before the Gospel, when the priest signs himself on the forehead, lips, and breast, then the answer is: Yes, it is appropriate for the people to do so as well. GIRM 134:
- At the ambo, the priest opens the book and, with hands joined, says, Dominus vobiscum (The Lord be with you), and the people respond, Et cum spiritu tuo (And also with you). Then he says, Lectio sancti Evangelii (A reading from the holy gospel), making the sign of the cross with his thumb on the book and on his forehead, mouth, and breast, which everyone else does as well…
As to your second question, this is debated *ad nauseam *in these fora. I’ll not join a new debate here, but suggest you use the search feature for either “hand holding”, “orans”, or similar.