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Click View > Settings > View.
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Click the Advanced tab.
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Type a value for Eye separation.
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Type a value for Focal length.
The Eye separation is the actual distance between your eyes in model units. Typically, this value is
about 2.2 inches or 5.6 centimeters. You must convert your actual distance values
for the model. A larger value exaggerates the effect, while a smaller value reduces
the effect. An accurate value produces realistic depth perception.