Transactions . htly the corneal limbus. Occupying a portionof the lower half of the cornea is a flattened, ovoid, and, in themain, non-pigmented growth. Its long axis is 10 mm., and it is5 mm. in width and 5 mm. in thickness. It is about equally sit-uated upon the cornea and sclera. The upper and lower tumorsare apparently in contact opposite the center of the cornea andat this point some pigmentation of the inferior growth is ob-served. The upper nasal quadrant of the cornea is clear, an ap-parently normal anterior chamber and iris being visible. Thelower temporal quadrant upon which the two
Transactions . htly the corneal limbus. Occupying a portionof the lower half of the cornea is a flattened, ovoid, and, in themain, non-pigmented growth. Its long axis is 10 mm., and it is5 mm. in width and 5 mm. in thickness. It is about equally sit-uated upon the cornea and sclera. The upper and lower tumorsare apparently in contact opposite the center of the cornea andat this point some pigmentation of the inferior growth is ob-served. The upper nasal quadrant of the cornea is clear, an ap-parently normal anterior chamber and iris being visible. Thelower temporal quadrant upon which the two growths encroachto some extent is otherwise occupied by thickened conjunctivaltissue. The measurements of the eyeball are normal and, ex-cepting the portion described, no other part seems to be affected. Histologic Examination: After fixing in formalin the eye was frozen and bisected ina plane passing about 10° to the temporal side of the upper endof the vertical meridian, through the center of the base of the. l>vi/Ho^ Veasey : Sarcoma of Liuihus. 285 upper, and obliquely through the lower growth, and through theoptic nerve posteriorly. The plane of bisection leaves a smallpupil in the nasal half. The temporal half was embedded incelloidin for miscroscopic examination; the nasal preservedas a gross mount. Examination of the sections shows the cornea to be overlaidby a superior pigmented and inferior relatively non-pigmentedtumor, the two being in contact opposite the center of the pericorneal tissues in the neighborhood of the upper growth(a space included between imaginary lines passing forward fromthe periphery of Bowmans membrane and from points oppositethe root of the iris) are densely infiltrated with tumor and in-flammaton,- cells — a condition believed to indicate an advancinglocal metastasis of the contiguous neoplasm. The advancingmargin shows an attempted walling-off with lymphocytes. Theforemost (possibly youngest) of the advancing neoplasmic cellsi
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectophthalmology, bookye
