please help with convergence and retinal disarity!

[sisqo1111]

hi
im stressing out about these two. would someone be able to provide a clear explanation of both plus an example. these are what alway stuff me up on my practice exams.
thankyou!

[moshi]

these are both binocular depth cues
retinal disparity - due to the 6-7cm difference between the eyes, each retinal image received by the eye is slightly different. the greater the disparity, the closer the object is, vice versa
convergence - the inward turning of the eyes to focus upon a nearby object. the brain judges that the greater the tension in the eye, the closer the object
hope that helps!

[Nick]

You also need to remember that convergence has limited application- it can only be used for objects within seven metres.

[moshi]

and retinal disparity within 10m

[daniel99]

Thats what i was stuck with aswell thanks for clarifying it...