A review of the ophthalmic literature shows that congenital cyst of the vitreous is rare. Tansley1 in 1899 described a cyst in the center of the vitreous chamber as follows :
It would settle toward the disc or lens according to gravity following movement of the eye. It was irregularly spherical with small indentations, somewhat resembling a potato, and this simile was made still more positive by there being spots and lines of pigment upon the capsule. The spheroid was itself transparent or nearly so, and could only be seen by its pigment and capsule outline. The presence of the pigment upon its capsule would indicate that at some time there had been imflammatory action.
In a discussion of this cyst Dr. Alt offered the following explanation for its origin, which since then has been largely accepted :
This is very interesting and in thinking of what might possibly give rise
CASSADY JV. CONGENITAL CYST OF THE VITREOUS. Arch Ophthalmol. 1939;21(1):45–50. doi:10.1001/archopht.1939.00860010059005
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