Beware when you buy eye-drops.

I feel everyone should know when purchasing eye-drops please read the validity carefully. Don't buy a 10ml bottle you are wasting your money like I did. It appears eye-drops are only valid in most cases for 30days. The container or bottle says discard the contents 30 days after opening. So if you only use eye-drops once a week you will only use about 4 drops and discard the bottle. Why do they make 5ml & 10ml when a single person cannot use 5ml of eye-drops within 30 days. The bottles should be 1ml or 2ml at the most. To me it is another of these money making schemes.