My eyes are very itchy, what should I do?

My eyes are somewhat sensitive. They itch constantly. I had an allergy test just in case, but no substances showing allergic reactions were found.

Of course, I went to the ophthalmology department.

They just said I have dry eye syndrome.

Please prescribe only antibiotics and artificial tears. Just tell me to avoid using my phone as much as possible, not to wear contact lenses, and to get plenty of sleep. I was a bit disappointed because it was too vague.