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DISEASES OF THE EYE AND EAR





Category: Diseases of The Eye and Ear

The first thing we notice in looking at the eye may be the lids and at
each edge are the eyelashes. When this edge becomes inflamed it is called
Blenharitis Marginalis or inflammation of the margin of the eyelids. It is
called thus from the name of the eyelid "Blepharon;" It is always means
inflammation.

If we turn down the lower lid and turn up the upper, we see a red membrane
called the conjunctiva (connecting). This is the mucous membrane of the
eye. It lines the inner surface of both lids and is reflected over the
fore part of the Sclerotic and Cornea--two other coats of the eye, The
palpebral or eyelid portion of the conjunctiva is thick, opaque, highly
vascular (filled with blood vessels) and covered with numerous papillae.
It turns back (reflects) over the Cornea, but it consists only of a very
thin structure (epithelium) forming the anterior layer of the cornea and
is, in health, perfectly transparent. Upon the sclerotic it is loosely
attached to the globe. When the conjunctiva becomes inflamed it is called
(Conjunctiv(a)itis) conjunctivitis. The sclerotic-cornea forms the
external tunic (coat) of the eyeball, the sclerotic being opaque and
forming the posterior five-sixths of the globe; the cornea, which forms
the remaining sixth (the front white part that is plainly seen) being
transparent. The sclerotic (means dense and hard) serves to maintain the
form of the globe, the eyeball.





Next: The cornea




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