I understand the instructions about putting drops in until you don't see the black dot. But . . . does 'not seeing the black dot' mean that it is really hard to see it or absolutely cannot see it. Because if you try real real hard, you can still kind of see it. This absolutely cannot see it and barely can see it is the difference between 30 and 60.
Any tips or help is greatly appreciated.
Any tips or help is greatly appreciated.