Thanks for that advice.
Yes, beta-carotine - I wonder if there is a certain type to take.
And flax oil - he may already be taking that - I’ll find out.
Thanks for both suggestions!
http://www.ehow.com/about_5162700_benefits-flaxseed-oil-eyes.html
Trouble is, in my mind at least, flax oil tastes like ferret scat gone bad!
But you can buy the gel caps, that are alot easier to take.