The adjustments that your eyes make as they look from objects near to objects far away or from objects far away to objects closer can serve as cues to depth in and of themselves. This source of information about depth is known as.

Oculomotor depth cues is based on two things convergence and accommodation,for the eyes to see near by things within 25cm near point we look inwards at this point the muscles holding the lens tighten up to see near by things unlike when we see far things we tend to look outwards with our eye muscles relaxing.

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