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Allergic Conjunctivitis

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Allergic Conjunctivitis Powered By Docstoc
					        AMIRAH BT JAMALUDIN
NURHIDAYATUL HUSNA BT JOHARI
   Allergic conjunctivitis is an inflammation of
    the conjunctiva (the membrane covering the
    white part of the eye) due to allergy.
    If something irritates this conjunctiva, eyes
    may become red and swollen. The eyes also
    may itch, hurt or watery.
   It is also known as “pink eye”.
Allergic simple conjunctivitis


Spring catarrh


Phlyctenular kerato-conjunctivitis


Giant papillary conjunctivitis
•   Definition : Occurring as the result of exposure to a
    wide variety of allergens
•   Simple allergic conjunctivitis often results from
    exposure to eye medications or contact lens solutions
    (or their preservatives).

•   Symptoms:
•   Itching and tearing in response to antigen exposure.

•   Signs :
•   Unilateral or bilateral
•   Mild to moderate conjunctiva hyperaemia
•   Chemosis
   Management:
   General measures include:
     Avoid allergen where possible
     Avoid wearing contact lenses until symptoms and
      signs resolve



     Avoid rubbing the eyes
     Cool compresses and preservative-free lubricants may
      also help

    If severe,
    - Oral or topical anti-histamine
    - Mast cell stabilizer
   Definition: Kerato-conjunctivitis produced as an allergy
    to an endogenous agent.
   Aetiology: It is a manifestation of allergy to an
    endogenous toxin as
   Tuberculo-protein
   Intestinal parasites
   Septic foci as in tonsils and adenoids

   Symptoms :
   Discomfort and lacrimation
   If cornea involved,photophobia and blepharospasm
    occur
   Signs :
    ◦ Phlyctens
        Rounded nodules
        Size 1-3 mm
        Grayish in color
        Eleveated above the surface
        Surrounded by a small area of injection
• Complications:
(1)Cornea
 A-Corneal phlycten
 B-Phlyctenular ulcers
 C-Phlyctenular pannus


(2)Eczema of lids
(3)Muco-purulent conjunctivitis: due to secondary infection
  with staph. Aureus
(4)Recurrence: are common if the cause is not removed.

•   Treatments :
   Local cortisone drops and ointment
   Atropine if cornea is involved
   Fascicular ulcer needs cautery with carbolic + Periotomy &
    cautery of vessel
   Definition : It is a bilateral seasonal conjunctivitis
    recurring in the warm seasons.
   Aetiology : It is an allergy of the conjunctiva to an
    unknown exogenous factor.
   The contributing factors are :
   U.V rays
   Heat
   Dust
   Incidence :
   Age : Children
   Sex : boys more
   Season : summer (not spring)

   Symptoms :
   Itching
   Photophobia
   Lacrimation
   Ropy discharge (thread): formed of
    mucus,eosinophils and epithelial debris so that it is
    scanty,white and elastic
   Treatment:
    General:
    -Antiallergy drugs (antistine,Benadryl,calcium etc)


    Local:
    -Dark glasses for photophobia
    -Cold compression for sensation of heat
    -Frequent washing with cold lotion as 4 % boric acid
    -Local antihistaminic as antistine of preisoline drops
    -Local vasoconstrictor as adrenaline or privine for
    hyperaemia
    -Local cortisone drops (Dexamethasone 0.1 %) pulse
    therapy during an attack every 2 hours for 5 days only to
    guard against its complication (may induce glaucoma)
    -Local disodium chromoglycate eye drops to stabilize the
    mast cells “one month before summer”
   Definition : It is an allergic conjunctivitis
    characterized by the formation of giant papillae.
   It occurs most probably due to mechanical
    irritation of the palpebral conjunctiva in case of :
         -Contact lenses (more with extended wear CL
         and with lens deposits)
         -Artificial eyes
         -Prominent suture following surgery
   Symptoms :
    -Red Eye          -Mucoid discharge
    -Itching
   Signs :
   Conjunctival hyperaemia
   Giant papillae on superior tarsal conjunctiva
   Superficial punctuate keratitis
   Peripheral corneal subepithelial infilterates

   Treatment :
   Stops using contact lenses for 2 weeks
   Topical mast cell stabilizer (disodium
    chromoglycate) 4 times daily
   Topical steroids for few days only
   Use new daily wear lenses after complete cure
Thank you
Syukran
Terima kasih…

				
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