Cesspit 152
15th May 2002, 17:45
How far down an eyechart are you SUPPOSED to be able to read?
ie. longsighted etc.
Is longsight a bad thing?
KazBird
17th May 2002, 12:47
at my last medical I was told you had to be able to read to the end of the 3rd line up from the bottom.
KB
Standard Noise
18th May 2002, 10:15
I always read the bottom line, just to save me a trip to Specsavers.:D
gingernut
24th May 2002, 14:29
Eye test explained!
The eye test (Snellen's) consists of a series of letters of varying sizes, so that the top letter is visible to the "normal" eye at 60m, and the subsequent lines at 36,24,18,12,96 and 5m respectively.
Visual acuity (the thing you are measuring) is recorded as
d/D
where d is the distance at which the letters are read (usually 6m), and D is the distance at which they should be read. (6m usually).
The normal person can usually read the 7th line, ie 6/6.
It used to be measured in feet, hence the phrase 20/20 vision.
Hope it clarifies the situation.
Any tips on landing cessna's.