How much does your Listing's Plane turn?
If your Listing's Plane turns as much as your vergence the lines should remain parallel.
If your Listing's Plane turns more than your vergence then you should see the opposite pattern.
How much does your Listing's Plane turn? |
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| This is what you may have seen if your Listing's
Plane turns less than your vergence. Most subjects show
this pattern. If your Listing's Plane turns as much as your vergence the lines should remain parallel. If your Listing's Plane turns more than your vergence then you should see the opposite pattern. |
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Copyright © 1996 Tutis Vilis and Douglas Tweed
University of Western Ontario
London Ontario Canada
Updated October 28, 2005
Comments welcome. Email to tutis.vilis@schulich.uwo.ca