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Aust N Z J Ophthalmol. 1997 May;25 Suppl 1:S103-5.

Lymphatic sinusoids exist in chick but not in rabbit choroid.

Author information

1
School of Optometry, University of New South Wales, Sydney, Australia. B.Junghans@unsw.edu.au

Abstract

PURPOSE:

Although it is generally thought that lymphatics do not exist in the choroid, there is mounting evidence that lymphatic-like structures do exist in primates and fowl.

METHODS/RESULTS:

Our comparison of the ultrastructure of chick and rabbit outer choroid indicates that major differences exist in the non-vascular areas of the choroid: notably, the chick has large lymphatic sinusoids, whereas the rabbit only has a system of large vacuoles contained within the processes of individual fibroblasts.

CONCLUSIONS:

These results raise questions regarding the similarities or otherwise between species of the management of retinal metabolites, excess tissue fluid and choroidal homeostasis, especially during conditions of overload.

PMID:
9267641
[Indexed for MEDLINE]
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