VISION THREAD (other than colour vision)

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Baz

I am not sure the S and C in yours are stands for because my
country use different jargon.

This is what the ICAO Annex One(10th edition) says about
eye acuity:6.3.3.2. is for class 1 and 6.4.3.2 is for class 2.

6.3.3.2 Distant visual acuity with or without correction
shall be 6/9 or better in each eye separately, and binocular
visual acuity shall be 6/6 or better. No limits apply to
uncorrected visual acuity. Where this standard of visual acuity
can be obtained only with correcting lenses, the applicant may
be assessed as fit provided that

6.4.3.2 Distant visual acuity with or without correction
shall be 6/12 or better in each eye separately, and binocular
visual acuity shall be 6/9 or better. No limits apply to uncorrected
visual acuity. Where this standard of visual acuity can
be obtained only with correcting lenses, the applicant may be
assessed as fit provided that:

Hope this could be help,

CBS