Staphylococcal conjunctivitis is associated with all except:
Correct Answer: Vernal conjunctivitis
Description: C i.e. Vernal conjunctivitis Staphylococcus has been mentioned as a causative organism for bacterial conjunctivitis which can present as Acute Purulent/Muco-purulent Conjuntivitis, Membranous/Pseuo-Membranous Conjunctivitis or Ophthalmia Neonatorum. And, corneal marginal ulcer Q is a complication of Acute Purulent/ Muco-purulent Conjuntivitis. Apa from this Phlectenular conjunctivitis Q often results from allergic reaction to endogenous staphylococcal proteins, and is often complicated by Muco-purulent Conjuntivitis which is most commonly due to staphylococcus. Vernal and Follicular Conjunctivitis() have differen etiologies and are not related to staphylococcus. As for Hordeolum Q (External/Stye i.e. inflammation of Glnds of Zies/Moll & Internal i.e. infected Chalazion) is most commonly caused by staphylococcus but has not been mentioned as being relate to staphylococcal conjunctivitis. Type of Conjunctivitis Causative agent/ Example Acute / Epidemic - haemorrhagic conjunctivitis (Apollo / Jai Bangla C.) Mnemonic - "PACE" Picorna virusQ (usually Enterovirus 70) Adeno virus 11Q Coxsackie virus A-24Q Enterovirus 70Q Subconjuctival haemorrhage is also seen * Infection in Pneumococcus (Streptococcus pneumoniae)Q - Koch-Week's bacillusQ - H. influenzaeQ * Head injury, local trauma. * Venous congestion due to persistent cough or compression of chest or neck * Vicarious mensturationQ * Blood dyscrasias eg. leukemia, purpura, haemophilia * Hypeension & aeriosclerosis Acute membranous conjunctivitis * Corynebacterium diphtheriaeQ * Streptococcus haemolyticus (Virulent type)Q Pseudo-Membranous conjunctivitis * Bacterial infection - Corynebacterium diphtheriae (low virulence)Q Staphylococcus aureusQ - 13-Hemolytic streptococci - Streptococcus pneumoniae (Pneumococcus)Q - Haemophilus aegyptusQ, H. influenzae Neisseria gonorrhoeaeQ * Viral infection Herpes simplex - Adenoviral epidemic keratoconjunctivitis * Chemical irritants - Acids, Ammonia, lime - AgNO3, CuSO1 Angular (Diplobacillary) Conjuctivitis Moraxella lacunataQ, M. axenfeldo and rarely staphylococci Trachoma Chlamydia trachomatis A,B, Ba, CQ Acute Follicular conjunctivitis: - Adult/ Acute - Inclusion Conjuctivitis or Swimming Pool Conjunctivitis Chlamydia trachomatis (serotypes D-K)Q - Epidemic Kerato Conjunctivitis Adenovirus serotype 8, 19 (sometimes 3, 7) - Pharyngoconjuctival Fever Adenovirus 3, 4, 7 - Acute Herpatic Conjunctivitis - Herpes simplex virus type IQ (m.c.) - HSV type 2 (mostly cause genial infections but sometimes may involve eye) - New castle conjunctivitis New castle virus Chronic follicular conjunctivitis - Molluscum contagiosum - Topical preparations eg. Idoxuridine (IDU), pilocarpine, eserine, adrenaline, DFP Benign/school folliculosis d/ t mild infection in school age children Opthalmia neonatorum - Chemical (AgNO3) Q 1 < 2 days - N. gonorrhoea Q - Staphylococcus aureus Q - Streptococcus pneumoniae 2-3 days - Streptococcus hemolyticus - Herpes simplex - II virus - 5-7 days - Chlamydia trachomatis D-K serotype Q (Neonatal inclusion conjunctivitis) - > 7 days Allergic conjunctivitis * Delayed (type IV) hypersensitivity response to endogenous Phlyctenular keratoconjunctivitis - Staphylococcus proteins (m.c. cause) Q[1 - Tuberculous proteins (previously considered m.c. cause) Q - Moraxella axenfeld bacillus & worm infestation - Giant papillary conjunctivitis - Contact lens Q Left out nylon suture - Contact dermoconjunctivitis Topical atropine, penicillin, neomycin, soframycin & gentamycin Spring catarrh, hay fever conjunctivitis, atopic keratoconjunctivitis Exogenous allergens as pollen Granulomatous conjunctivitis TB, Sarcoid, Leprosy, Syphilis, Tularemia, Opthalmia-nodosa (caterpillar hair conjunctivitis)
Category:
Ophthalmology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now