REGION OF THE EYE. 



Frequently these glands become obstructed and their mucus contents dilate the 

 gland, forming a cyst known as chalazion. Suppuration may occur and pus instead 

 of mucus is then contained within them. The wall of these cysts is formed by 

 fibrous tissue containing some of the epithelial cells of the glands; therefore, if an 

 uninflamed cyst is simply opened and its contents expressed, it will soon reform. 

 To prevent this recurrence, the lining membrane is curetted in order to remove the 

 mucus-forming cells. The cyst may point and be opened either on the side of the 

 skin or conjunctiva, preferably the latter. 



The openings of the Meibomian ducts are on the inner edge of the lids where 

 the conjunctiva joins the skin. At the outer edge of the lids are the cilice or eye- 

 lashes and connected with them are sebaceous and sweat glands. Infection of these 



Skin 



Subcutaneous tissue 



Orbicularis palpebrarum 



Fat 

 / 



Jj\X. / Tarsal muscle 

 J|fe % / Levator palpebrse 



i&T 



superior 

 Blood-vessel 



Henle's gland 



Artery of tarsal arch 



Meibomian duct 



Glands of Moll Cilia ^Ciliary muscle 



FIG. 97. Vertical section of upper eyelid of child. X 15. (Piersol.) 



glands produces a small abscess called a stye. As they are on the outer edge of the 

 lids they tend to discharge anteriorly and not toward the conjunctiva. 



The conjunctiva covers the outer surface of the eye and the inner surface of 

 the lids. The fold where it passes from one to the other is called the fornix. The 

 tarsal or palpebral conjunctiva adheres closely to the tarsus and as it is transparent 

 the Meibomian glands can readily be seen through it. The ocular or bulbar con- 

 jimctiva is loosely adherent to the sclerotic coat and through it the conjunctival vessels, 

 which move with it, can be seen. The straight vessels going toward the cornea do 

 not move when the conjunctiva is moved, because they lie deeper and are attached to 

 the sclera. 



The Lachrymal Apparatus. The lachrymal gland consists of two portions: 

 an orbital or superior portion and a palpebral or inferior portion. The orbital 



