OPHTHALMOLOGY: PRACTICE 1

                                  SINGLE BEST OPTION SERIES
                INSTRUCTION: SELECT THE SINGLE BEST OPTION

1.        Aqueous humour is produced by secretion and ultrafiltration from the.........................
   a.       Ciliary body
   b.      Choroid
   c.       Ciliary processes
   d.      Ora serrata
   e.      Canal of Schlemm
   2.       Concerning the pathophysiology and management of glaucoma, which of the following concepts is unnecessary?
   a.       Balance between production and removal of aqueous humor
   b.      Anatomy of the anterior and posterior chambers of the eye
   c.       Uveoscleral pathway
   d.      Function of the iridocorneal angle.
   e.      None of the above
   3.       The device for measuring intra-ocular pressure is:
   a.       Goldmann tonometer
   b.      Patchymeter
   c.       Argon laser
   d.      Ophthalmoscope
   e.      Amsler grid
   4.       The conventional pathway for the drainage of aqueous humour involve the following except:
   a.       Supra-choroidal space
   b.      Trabecular meshwork
   c.       Canal of Schlemm
   d.      Episcleral veins
   e.      None of the above
   5.       Which of the following is incorrect about primary open angle glaucoma?
   a.       The structure of the trabecular meshwork may appear normal with a gonioscopy lens
   b.      There is decreased resistance to the outflow of aqueous at the trabecular meshwork
   c.       Intra-ocular pressure is elevated
   d.      There may be thickening of the trabecular meshwork
   e.      None of the above
   6.       A form of glaucoma in which glaucomatous field loss and cupping of the optic disc occur without an elevated intra-ocular pressure, is referred to as:
   a.       Peripheral anterior synechiae
   b.      Normal or low tension glaucoma
   c.       Schmid-Fraccaro syndrome
   d.      Pigment dispersion syndrome
   e.      Ocular hypertension
   7.       A patient with Sturge-Weber syndrome presented with Glaucoma to Igbinedion University Teaching Hospital. Based on this information, the pathogenesis of this glaucoma is best  explained from:
   a.       Raised intra-ocular pressure from raised episcleral venous pressure.
   b.      Raised intra-ocular pressure from deposition of materials into the trabecular meshwork
   c.       Raised intra-ocular pressure from abnormal development of the iridocorneal angle
   d.      Raised intra-ocular pressure from swelling of cataracts
   e.      None of the above
   8.       A patient with proliferative diabetic retinopathy presented to University of Benin Teaching Hospital with glaucoma. The cause of this glaucoma is most likely:
   a.       Acanthosis nigricans
   b.      Retinal cotton wool spots
   c.       Maculopathy
   d.      Rubeosis iridis
   e.      None of the above
   9.       The following are causes of secondary glaucoma except:
   a.       Pigment dispersion syndrome
   b.      Blunt trauma to the eye
   c.       Uveitis
   d.      Reduced episcleral venous pressure
   e.      Large choroidal melanoma
   10.   Which of the following is incorrect about chronic open angle glaucoma?
   a.       The incidence is higher in first degree relatives of affected patients
   b.      The intra-ocular pressure is typically 11 to 21mmHg
   c.       The cup to optic disc ratio in the vertical is usually greater than 0.4
   d.      It is usually symptomless but may present with visual field defect
   e.      The usual first line drug treatment option is topical adrenergic beta blockers
   
   
   1. c
   2. e
   3. a
   4. a
   5. b
   6. b
   7. a
   8. d
   9. d
   10. b
   
   
                                           REMEMBER
   ” Some people sin by not working diligently for six days whereas, others – because of greed, unbelief or powerlessness- sin by working also on a day of rest and worship. Either way of breaking this   command results in poverty.”   By  Vishal Mangalwadi.