3. ETIOLOGY:-
a) Ususally children are affected.
b) Devitalised consition following eruptive fevers
and poor unhygeinic condition.
c) Caussative agents:-1) klebs-loeffler bacillus.
2) streptococcus haemolyticus.
3) staphylococcus aureus.
4) pneumococcus
5) koch-weeks bacillus
d) Chemical irritants like ammonia,lime or silver
nitrate.
4. PATHOLOGY:-
THIS MEMBRANE EASILY PILLED OFFWITHOUT LEAVING ANY BLEEDING SURFACE.
EXUDATE COAGULATES AND FORM A PSEUDO-MEMBRANE
EXUDATE FORMS ONLY ONTHE SURFACE OFTHE CONJUNCTIVA
NOT WITHIN ITS SUBSTANCE
FIBRINOUS EXUDATE OCCUR OCCUR ON PALPEBRAL CONJUNCTIVA OR ONTHE CONJUNCTIVA
OF FORNIX
ORGANISM INVADINGTHE CONJUNCTIVA
5. SYMPTOMS AND CLINICAL SIGNS:-
Starts as muco-purulent conjunctivitis.
There is soft ,painless swelling of the lids.
Scanty sero-ppurulent discharge.
Membrane appear on the third day.
Membrane yellowish,white in colour.
It can be easily removed without any
bleeding.
6. Course:-
After a period of 10 days to 3 weeks the
membrane disappears and the picture of
acute catarrhal conjunctivitis persists ehich
gradually subsides.
7. DIAGNOSTIC CRITERIA:-
A) Signs of acute catarrhal conjunctivitis.
B) Formation of soft membrane on tarsal
conjunctiva or on the conjunctiva of fornix
which can be removed eeasily without
bleeding.
8. TREATMENT :-
Prophylactic :-
Prophylaxix against the good eye :-
A) By not touching the eye with one’s own
fingure.
B) By asking the patient to lie on on affected
side,so that the discharge from the affected eye
may not come contact in good eye.
Prophylaxis agains other family member:-
The personal belongings of the patients like
towel,handkercheif,etc,should be kept separate.
9. Curative:-
a) Conjuctival sac should be washed with warm
normal saline water 3 times a day.
b) Mild astringent drops like lotio argyrol 5 percent
or lotio protargol 5 percent.
c) Sulphacetamide 20% drops
d) Broad spectrum antibiotic ointment
(tetracycline or oxytetracycline)
e) If marginal ulcer their,atropine sulph 1 %drop
f) Steroids are contraindicated.
