Item Brochure

The Eye
Transparency of the cornea, lens and vitreous humor permits
the practitioner to directly view arteries, veins, the optic nerve
and the retina.
Direct observation of the structures of the fundus through an
effective ophthalmoscope may show disease of the eye itself or
may reveal abnormalities indicative of disease elsewhere in the
body. Among the most important of these are vascular changes
due to diabetes or hypertension and swelling of the optic nerve
head due to papilledema or optic neuritis. In this sense, the eye
serves as a window through which many valuable clinical
evaluations may be made.
When a preliminary diagnosis of an imminently dangerous eye
condition, such as acute glaucoma or retinal detachment, is made
by the examiner, prompt referral to an ophthalmologist may
prevent irreversible damage. Or, when distressing but less urgent
conditions, such as visual impairment due to cataract or vitreous
floaters are recognized, the patient can be reassured and referred.
Welch Allyn ophthalmoscopes, with their bright, white halogen
illumination coupled with their patented optical systems, allow
the examiner to clearly see these important structures of the eye
to aid in making the correct diagnosis.
Little has been written giving the practitioner detailed instructions
on the use of the ophthalmoscope. Because the examination can
give so much information about a patient’s well being, correct use
of the ophthalmoscope makes it one of the most valuable tools
available for diagnostic use. The following pages in this section
contain information on ophthalmoscopes, how to conduct an
ophthalmic exam, and what to look for while examining the eye.
NORMAL FUNDUS
Optic Disc
Physiological Cup
Macula
Vein
Artery
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A- Macula
B- Vitreous Humor
C- Sclera
D- Choroid
E- Retina
F - Ora Serrata
G- Canal of Schlemm
H- Anterior Chamber
I - Iris
J - Cornea
K - Ciliary Body
L - Zonule (Suspensory Ligament)
M- Conjuctiva
N - Lens
O - Hyaloid Canal
P - Central Retinal Vein
Q - Optic Nerve
R - Central Retinal Artery