Editing Depth perception (section)

=== Convergence ===
{{main|Convergence (eye)}}
Convergence is a binocular oculomotor cue for distance and depth perception. Because of stereopsis, the two eyeballs focus on the same object; in doing so they converge. The convergence will stretch the [[extraocular muscles]]{{snd}}the receptors for this are [[muscle spindle]]s. As happens with the monocular accommodation cue, kinesthetic sensations from these extraocular muscles also help in distance and depth perception. The angle of convergence is smaller when the eye is fixating on objects which are far away. Convergence is effective for distances less than 10 meters.<ref>{{cite book |last1=Okoshi | first1=Takanori. |year=2012 |title=Three-dimensional imaging techniques |pages=387 |publisher=Elsevier |asin=B01D3RGBGS}}</ref>