Determining A Dog's Age?

So I've adopted this neglected pooch who seems to be a lhasa apso or a mix of that breed. Her fur was badly knotted and matted on her paws, legs, and behind her ears. She's malnutritioned and skinny, so small that when we first took her in, we thought she was a puppy. On further examination though, we've... show more So I've adopted this neglected pooch who seems to be a lhasa apso or a mix of that breed. Her fur was badly knotted and matted on her paws, legs, and behind her ears. She's malnutritioned and skinny, so small that when we first took her in, we thought she was a puppy.

On further examination though, we've discovered that she has what looks like cataracts in her right eye. It's a bluish haze or film over her dark brown iris. The left eye is normal.

Does this mean that the dog is old?
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