double vision, due to astigmatism?

[Imagineblack]

Oops meant to say that I recently made the same discovery as you too! When I finally learned recently about shifting on the Big C with central fixation I found that I could shift back to it to gain confidence with the smaller letters. It really works doesn't it? It's definitely an important weapon in our fight for better vision. I wish I'd known that trick before as it is a good way of maintaining a clear flash.