The accommodation reflex is a reflex action of the eye, in response to focusing on a near object, then looking at distant object (and vice versa). It is dependent on cranial nerve II (afferent limb of reflex), higher centres and cranial nerve III.

A near object (for example, a computer screen) appears large in the field of vision, and the eye receives light from wide angles. When focusing on a near object, the pupil constricts in order to prevent diverging light rays from hitting the periphery of the retina and resulting in a blurred image. As the pupil constricts, the lens becomes more spherical to allow for the diverging light rays.

See also

• Accommodation (eye)
• Ciliary muscle
• Presbyopia

External links

• Accommodation
• Exam of cranial nerve II - accommodation is usually tested as a part of this exam.

Cranial nerves | Eye | Ophthalmology | Reflexes

Akomodasyon refleksi | Акомодація ока