I once had a dog who looked just like yours. At age 13 He started to drink a lot of water and urinate more. He had diabetes. Diabetes can affect the kidneys and cause kidney failure which happened to my dog. However, with insulin and special dog food and subcutaneous fluids he lived 3 more active years. Cloudy eyes can be cataracts either from age or Diabetes. Please check online for help from various groups. I see them all the time on line but specific names escape but start with CAPS (companion animals protection), Best Friends, and Friends of animals and maybe they can direct you elsewhere. I will keep you and your friend in my prayers. I know it hurts so much.