Need something explaining to me =)
I have been reading about eyes, vision and all that, but cant find the answer to this.
Some people "cant" see 20/20 with correction, why is this?
Example case - +4.75 corr / 1.75D Astg, 20/30 vision.
To my mind, increasing correction could increase the vision? For example, if you used a telescope, you would obviously see 20/20, so why not if you increased dioptre?
Bad example really, but wondering why some can see 20/20 with correction and some cant?
Thanks