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ALLERGIC CONJUNCTIVITIS. AMIRAH BT JAMALUDIN NURHIDAYATUL HUSNA BT JOHARI. Introduction. Allergic conjunctivitis is an inflammation of the conjunctiva (the membrane covering the white part of the eye) due to allergy. - PowerPoint PPT Presentation



  • 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.

  • Definition : Occurring as the result of exposure to a wide variety of allergensSimple 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 bilateralMild to moderate conjunctiva hyperaemiaChemosis

  • Management: General measures include: Avoid allergen where possibleAvoid wearing contact lenses until symptoms and signs resolve

    Avoid rubbing the eyesCool compresses and preservative-free lubricants may also help

    If severe,Oral or topical anti-histamineMast 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-proteinIntestinal parasitesSeptic foci as in tonsils and adenoids

    Symptoms :Discomfort and lacrimationIf cornea involved,photophobia and blepharospasm occur

  • Signs : Phlyctens Rounded nodulesSize 1-3 mmGrayish in colorEleveated above the surfaceSurrounded by a small area of injection

  • Complications:(1)CorneaA-Corneal phlyctenB-Phlyctenular ulcersC-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 ointmentAtropine if cornea is involvedFascicular 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 raysHeatDust

  • Incidence :Age : ChildrenSex : boys moreSeason : summer (not spring)

    Symptoms :ItchingPhotophobia 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 surgerySymptoms : -Red Eye -Mucoid discharge -Itching

  • Signs : Conjunctival hyperaemiaGiant papillae on superior tarsal conjunctivaSuperficial punctuate keratitisPeripheral corneal subepithelial infilterates

    Treatment :Stops using contact lenses for 2 weeksTopical mast cell stabilizer (disodium chromoglycate) 4 times dailyTopical steroids for few days onlyUse new daily wear lenses after complete cure

  • Thank youSyukranTerima kasih