I had severe dry eyes, even expensive OTC drops were no help, and I tried different drops. I was on the verge of not being able to drive.
Restasis was the answer for me. Within about three months I was much improved, and within about 6 months my eyes were near normal. I continued Restatsis for about a year and gradually slacked off. I was lucky, some people have to continue treatment for a lifetime. Dry eye disease isn’t just a nuisance, it’s serious and can be debilitating.
IIRC, Restasis is extremely expensive...?