Transactions . volved thewhole of the right upper eyelid. It was dissected out, noeyeball was found, no histological examination was made. Purtscher,t in the same year, described ;i cyst in theupper lid in a case of microphthalmos. He puncturedthe cyst and a yellow fluid escaped, it afterwards , another cyst formed at the bottom of the this case, again, no histological examination was made These two cases, though resembling the one underconsideration in having a cyst in the upper lid, did notpresent the peculiar extension of the whole conjunctiva] * Vol. XIV. p. 190. t hii
Transactions . volved thewhole of the right upper eyelid. It was dissected out, noeyeball was found, no histological examination was made. Purtscher,t in the same year, described ;i cyst in theupper lid in a case of microphthalmos. He puncturedthe cyst and a yellow fluid escaped, it afterwards , another cyst formed at the bottom of the this case, again, no histological examination was made These two cases, though resembling the one underconsideration in having a cyst in the upper lid, did notpresent the peculiar extension of the whole conjunctiva] * Vol. XIV. p. 190. t hiirrn klin. Rundschau, Nn :il. L894, I ONGENJ MALFORW CYSTK I.* I , L85 sac through the palpebral aperture winch tunned in iisuch a si piking feal ure. The outer fibrous tissue wall of the cyst in this specimenwould appear to be attenuated sclerotic; it is continuouswith the tissue, which is undoubtedly selenitic posteriorly,and it lias the tendons of extra-ocular muscles inserted Con. Pig. 22. Cor C-. Diagrammatic representation of a section through the cystic lor.,cornea ; < Ion.,conjunctiva ; E, eyelid ; s. sclerol ic; C, cavityof cyst ; M, partition extending back from anterior wall of cyst ; L, lVns; V. atypically developed viti us; . gap in sclerotic corresponding to optic foramen. into it. The circular piece anterior which comes to thesurface, and which is devoid of any tissue correspondingto conjunctiva superficial and separate from it, is probablycornea. 186 ?INUENITAL CONDITIONS. It would appear, then, that the cyst is really an enor-mous distension of the whole globe. The inner coat, corresponding to the retina, presentssome most noteworthy features. That portion of the retinausually developed from the inner layer of the secondaryoptic vesicle nowhere lies in apposition with that usuallydeveloped from the outer layer. The anterior parts ofthe cyst are lined by the former—i. e. tissue composedof a delicate network of fibres with branching cells
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Keywords: ., bookcentury1800, bookdecade1880, bookpu, booksubjectophthalmology
