Hello,

Are there any references (peer-reviewed) out there reporting an
"average" visual field in degrees?  From reading the many great posts
on the list, I've learned that the visual field depends on many
things, including physical obstruction from the nose, eyebrows, etc.
I'm just trying to find what the average visual field is for one eye.

A text titled "Bodyspace: Anthropometry, Ergonomics and the Design of
Work" by Pheasant (1996) cites a study by Weston (1953) showing an
optimal vertical visual field of 30 degrees, but no maximum visual
field in either the horizontal or vertical axes.

In the "Handbook of Human Factors and Ergonomics", Bullinger et al
(1997) write that each eye has approximately a 150 degrees FOV
horizontally and 120 degree FOV vertically.  However, the authors do
not cite any peer-reviewed literature. Does anyone have any ideas
where these numbers came from?

Any help would be greatly appreciated...again, I've greatly enjoyed
learning from the previous posts and look forward to your responses.