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eye related issues

Argyle Robertson Pupil - Horner's Syndrome - Xerophthalmia - Keratomalacia - Anisocoria



different-types-of-pupil

Define The Terms:

1) Argyle Robertson Pupil:
    It is a pupil that:
a) remain constricted
b) Doesn't respond to accommodation.
Cause:
Lesion in the vicinity of aqueduct of sylvius and superior colliculi in syphilis of CNS.

2) Horner's Syndrome:
It is the collection of symptoms resulting from interruption of sympathetic nerve supply to eyes.
Symptoms are;
a) Miosis, that is pupil remain constricted.
b) Ptosis, that is superior eye lid drops,
c) Anhidrosis, that is sweating on the affected side does not occur.
d) Vasodilation of blood vessels of affected side.

3) Xeropthalmia:
It is a disease characterized by small triangular white patches on outer and inner sides of cornea.

Caused by:
Vitamin A deficiency.

4. Keratomalacia:
It is a disease in which cornea become dull, insensitive and necrotic.
Caused by:
Severe Vitamin A deficiency.

5. Anisocoria:
If two pupils are unequal, this is called anisocoria.

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