Going for an eyesight test- options

Question

Should a person with 20/20 vision be able to read ALL the lines of the sight board, also would they do a good color blindness test for you

Thanks

Please also say how you know this...

10 points for best answer

Answer 1

no i think it is like 2-3 lines above the bottom that is 20/20 vision.

dont know about the colour test. i suppose if you ask them they can do it or tell you where the best place to go is.

Answer 2

Yes, normally a person with 20/20 vision should be able to read all the lines.  However, the bottom line is often at the limit of 'perfect' eyesight range so I wouldn't worry if it's difficult.  Most opticians do a basic colour blindness test which can then be taken further if they believe it's necessary.