Hello there. l would like to open this question. What is the limited eyesight rate for flying an aircraft.
Eg: Shortsightedness about -5.00 to -5.50. What is the limited rate (-2.30, -3.70, etc) for flying an aircraft or they just looking at a person is eyes using the vision rate such as 6/6, 10/10 or etc during the medical exam/test.

Hi, This depends on your countries civil aviation authority. You could try their website or email them regarding the matter.
Hope l helped =)
-keNNNy

What country are you from? The rules change from one to another. l recommend looking up the civil aviation authority for the country that you live in.

The vision standards are
6/9 or better – Each eye separately
6/6 or better – Both eyes together (Binocular Visual Acuity)

N 5 – At 30 – 50 cms

N 14 – At 100 cms

Lens power is immaterial.

Any further queries check them out at this URL
http://pilots-medical.com/ClassIIvision.htm