The Recognition of Ocular Disease a Treatise for Opticians
The Recognition of Ocular Disease a Treatise for Opticians
James Forrest
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Largely due to the formation of numerous concretions of a yellowish hyaline substance, and is called a pinguecula. As a result of these changes, the pinguecula does not allow the red colour oF the blood to shine through as plainly as the non-thickened adjacent conjunctiva, and it might be confounded with a small pustule by a beginner. No symptoms are caused, and treatment is rarely indicated. Fiif. 24. Pterygium. Pterygium. This is a pocnliar growth of the conjunctiva and sub- conjunctival tiss...ue. Triangulai- in shaix', with its base (.^o-called body) at the semilunar fold, close to the inner canthus, it extends outwards, tapering to a rounded end (called the head), which gradually spreads on to the cornea, and becomes solidly and immovably united to it. In recent and progressive 48 THE EYICLIDS AM) CONJUNCTIVA. case^ the pterygium is red, flesliy and prominent, but in regres. Sivii ones it is pale, membraneous and almost translucent. It rarely spreads beyond the centre of the cornea.
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