Hyaloid canal is a small transparent canal running through the vitreous body from the optical nerve disc to the lens; in the fetus it contains a prolongation of the central artery of the retina, the hyaloid artery. Other names: Cloquet's canal, Stilling's canal.
The function of the canal is to provide an adjustable reservoir of mobile liquid which may be easily and rapidly displaced backwards in positive accommodation (close focusing), forwards in negative accommodation (far focusing).
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