The glaze melts to become a very strong glass, and is completely smooth.

Very strong six-inch glass was put up between him and the zoo visitors.

For a month, I tried his first suggestion, much stronger glasses for my right eye.

A collector of Canadian issues needs a very strong magnifying glass.

He used strong glasses 5 of course 5 for reading.

But even sharp eyes must find the text to be inscrutable without a strong magnifying glass.

As he spoke he was examining the ends with a strong glass.

However, a form of glass strong enough to fully test the theory did not exist at the time.

My eyes are getting weaker, so I have to get stronger glasses.

Those with only moderately blurred vision can often control the problem for a while simply by getting stronger glasses.