T3D Re: A Third Simple One

[Tom Deering <tmd@xxxxxxxxxxx>]

>Number one seems obvious.  But number two confuses me.  Is this limit
>of comfort documented?  I can fuse on my index finger 1 ft in front of
>my nose, then quickly re-fuse on a cloud behind it, effectively at
>infinity.  It is jarring, yes, and I certainly feel the eye muscles
>working - but not really that uncomfortable or unfamiliar.

In real life your focus and convergence are in perfect synch.  Viewing a
slide is a bit of a visual fib, since your focus remains fixed while the
convergence changes.  So I've always assumed the eyes and brain would
tolerate this fib only so much.

My assumption, anyhow.

Tom



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