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SomeMichGuy · M
It's your nearsightedness which makes the lights big.
Astigmatism makes straight lines curve.
Your basic Rx is for a spherical eye; astigmatism introduces a cylindrical correction to that model at a specific angle & power.
Astigmatism makes straight lines curve.
Your basic Rx is for a spherical eye; astigmatism introduces a cylindrical correction to that model at a specific angle & power.