The eye infection could

refer to kidneys deficiency. As well as the cats. So please do not feed any table foods and especially avoid the salt. Meanwhile have his drinking water be the same as the human drinking purified water, and have it be boiled before let him drink. Always provider plenty of the boiled drinking water to him. If possible, ad the chopped water melon skins, radishes and the turnips to his diet with every meal. The papaya and pineapple are good, too. And do not feed him with the meats too much. Since the high protein could hurt his kidneys. If you paid all the intentions as I mentioned here, for sure he can be lived much longer, won 't die of the kidneys failure as most dogs and cats do.