This may seem far fetched or even bluntly stupid but I had an idea today for a screen protector and I wanted to see if it was even possible.

Could you make a screen protector that magnifies the screen?

The reason I ask I was visiting my grandmother today and I was showing her something on the phone and she couldn't read it. So she then whips out this index card sized Magnifying plastic card thing. It was about the same thickness as a screen protector. Well that is when it hit me I wonder if you could make a screen protector to do that effectively and still keep it from being to distorted?

Let me know what you all think.