Thinkers have long appreciated that the human eye is a remarkable product of natural engineering. The ability to resolve 1 minute of arc is amazing, but human perception goes beyond the optics to make sense of the inputs; the understanding of that integration is the study of neuro-ophthalmology. Neuro-ophthalmology melds 2 disciplines, neurology and ophthalmology, exploring the link between the eye and the brain. This link begins with the afferent input through the optic nerve, involves complex processing, and includes efferent output to control the pupil and eye movements.
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