I am 81 years old generally healthy, I feel as if my eye lids are very heavy. I feel comfortable?

I have the same symptoms. Itchy eyes often indicates a B2 deficiency. I got a bottle of B-50 vitamins and cut each pill into four pieces so I can take a piece every hour. B2 is a dye that turns urine bright yellow, so when the color fades, it's time for some more. I also got sodium ascorbate and I take a quarter teaspoon every time I think about it. Vitamin C crystals have a strong taste, but sodium ascorbate is much milder. These two seem to control it pretty well.