MCQ of the Cornea

MCQ of the Cornea 1- a debilitated person with watering Rt eye, unable to face light, severe headache, developed a discoid shaped opacity in the centre of his cornea, white contents of the AC, & high IOP. In addition to antibiotics we give: A- mi mioti otics cs& & ace aceta tazzol olami amide de.. B- at atro ropi pine ne& & ace aceta tazzol olam amid ide. e. C- at atrrop opin ine& e& lo loca call st ster eroi oids ds.. D- mi mio oti tics cs& & loc ocal al ster eroi oid ds.

2-

in early hyop hyopyo yon n ulcer the AC contai contains: ns:

A- pus cells& cells& micr microorg oorganism anisms. s. B- pu puss cells cells& & high high prot protien ien co cont nten ent. t. C- RBCs. D- es esin inop ophi hils ls..

2-

in early hyop hyopyo yon n ulcer the AC contai contains: ns:

A- pus cells& cells& micr microorg oorganism anisms. s. B- pu puss cells cells& & high high prot protien ien co cont nten ent. t. C- RBCs. D- es esin inop ophi hils ls..

3-

in a patient of HZ ophthalmicus the apperance of the following means a high poss po ssib ibil ilit ity y of cor orne neal al af afffec ecti tion on::

A- co copi piou ouss con onju junc ncti tiv val di disc scha harrge ge.. B- massive edema of the eyelids. C- eruption of the tip of the nose. D- se sev ver ere e pe peri rioc ocul ular ar pa pain in..

4-

a farmer had a vegetable trauma to his eye. two weeks later, he developed D.V, redness, feathery edged corneal infiltration. He received broad spectrum A.B ED& ointments for 2 weeks, but he deteriorated more. The most appropriate next step:

A- C/S for specific A.B. B- culture for virus. C- culture for fungus. D- culture for acanthameba.

5-

a female patient 18 y old C/O of gradual drop of vision in one eye that improve with hard CL.

The most accurate diagnostic method is: A- tonometry. B- funduscopy. C- corneal topography. D- perimetry.

6-

fifth nerve palsy could cause:

A- ptosis. B- proptosis. C- neurotrophic keratitis. D- lagophthalmos.

7-

corneal perforation complication of :

A- fasicular ulcer. B- dendretic ulcer. C- hypopyon ulcer. D- trachomatous ulcer.

is

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expected

8- local steroids contraindicated in bacterial corneal ulcer for fear of: A- 2ry glucoma. B- cortical catract. C- corneal perforation. D- 2ry viral infection.

9-

Ex of one eye of patient showed dense central opacity with iris strands attached to the back of the cornea:

A- trachomatous. B- dendretic ulcer. C- hypopyon ulcer. D- phlyctenlar ulcer.

10- perforation is a common complication of: A- dendretic ulcer. B- pnemococcal ulcer. C- trachomatous ulcer. D- fasicular ulcer.

11- a patient with recurrent branching linear corneal ulcer, the best local ttt is: A- atropine& gentamycin. B- atropine& acyclovir. C- cortisone& acyclovir. D- cortisone& gentamycin.

12- an early case of keratocouns with clear cornea is best treated with: A- PKP. B- lamellar keratoplasty. C- hard CL. D- soft CL.

13- the following complication is likely to occur with fasicular ulcer: A- desmatocele. B- perforation. C- central nebula. D- anterior polar catract.

14- the sure diagnostic sign of corneal ulcer: A- ciliary injection. B- blepharospasm. C- miosis. D- +ve FL test.

15- the effective ttt of dendretic ulcer of the cornea is: A- surface anathesia. B- local corticosteroids. C- systemic steroids. D- acyclovir ointment.

16- HS keratitis is ccc by: A- tendecy to perforation. B- no recurrence. C- corneal hypothesia. D- pus in the AC.

17- a farmer had a eye trauma by tree branch followed by photophobia & lacrimation. The cornea show stromal infiltration. The correct diagnosis is reached by: A- FL stain. B- tonometry. C- corneal biopsy. D- corneal topography.

18- which of the following can be complicated by corneal fistula: A- dendretic ulcer. B- bacterial ulcer. C- interstatial keratitis. D- fasicular ulcer.

19- bacteria that can attak normal corneal epithelium: A- N. gonorrhea. B- staph epidermids. C- maroxella lacunata. D- staph aureus.

20-

desmatocele can be ttt by all of the following except:

A- pr bandage. B- theraputic CL. C- chemical cauterization. D- tissue adhesive (cyanoacrylate).

21-

advanced keratoconus is least corrected when ttt by:

A- hard CL. B- PKP. C- RGP CL. D- spectacles

22-

the factors of corneal transparency dont include:

A- the epithelium is st. sq. non kr. B- the stroma is formed of fine collagenous fibers of the same refractive index. C- the cornea is avascular. D- the cornea is detergescent . E- the cornea contains high population of goblet cells.

23-

the corneal luster is due to integrity of the tear film accompanied by:

A- intact epithelium. B- intact bowmans membrane. C- intact desmets membrane. D- intact endothelium.

24-

the nutritional supply of the cornea is not drived from:

A- atmospheric oxygen through tear film. B- aqueous humor. C- diffusion from perilimbic BVs. D- the trabecular meshwork.

25-

a school boy 10 years old, C/O of blurring of  vision, uncomfortable glasses, frequent itchy sensation. O/E: BCSVA was 6/60, 6/36. it was not possible to have accurate refraction. The cornea look clear, but the rt AC was deeper than the lt. the main cause of D.V:

A- active trahcoma. B- bulbar spring catarrh. c- early keratoconus. D- high myopia.

26-

all the following is correct about keratoconus except:

A- it is non heredofamilial ectatic disorder of the cornea. B- it is non inflammatory axial protrusion of the central part of the cornea. C- ccc by the presence of Flischer ring at the base of  the cone. D- it is bilateral progressive in nature, but one eye may precede the other. E- it is self limited & regressive in nature.

27-

keratoconus can not be managed by:

A- RGP CL. B- soft CL. C- PKP. D- lamellar keratoplasty.

28-

16 y old female wearing glasses -4.00 in both eyes, came asking you if she can do LASIK to correct myopia, her last year glasses was -3.00, she uses soft CL occasionally with no complication. Her BCSVA is 6/6. your advice:

A- do LASIK at once. B- do the LASIK when she is 18y old. C- must do LASIK when her refraction is stable for 2 successive glasses. D- the glasses & CL are more safe, dont do LASIK

29-

total ant. Staphyloma can be a complication of:

A- HZ. B- HS. C- trachomatous ulcer. D- pnemococcal ulcer.

30-

bandage of the eye is indicated in :

A- corneal abrasion. B- spring catarrh. C- MPC. D- episcleritis.

31-

total staphyloma can be ttt by:

A- lamellar keratoplasty. B- penetrating keratoplasty. C- enucleation. D- LASIK.

32-

a patient known to have keratoconus and using RGP CL with BCVA 6/9 in both eyes. He developed, he developed sudden drop of vision, watering, discomfort in Rt eye. 10 days later his vision improved partially to 6/60 with correction with disapperance of watering and discomfort. The next ttt is:

A- epikeratophakia. B- shift to soft CL. C- contine RGP CL. D- PKP.

33-

hypopyon is not sterile in the following condition:

A- perforated CU. B- retinoblastoma seedings. C- severe endogenous uveitis. D- acid burn to cornea.

34-

the earliest indicator of keratoconus is :

A- keratometry. B- keratoscopy. C- corneal topography. D- retinoscopy.

35-

corneal edema is commonly seen with:

A- lengthy catract surgery. B- corneal scar. C- megalocornea. D- microcornea.

36-

the diagnosis of corneal perforation is sure by:

A- +VE FL stain. B- the presence of stromal infiltrate. C- increased ocular pain. D- marked hypotony.

37-

HSV keratitis ccc by:

A- affect primarly the corneal periphery. B- show recurrence. C- doesnt stain with FL. D- perforation is expected.

38-

corneal luster is affected by:

A- corneal opacities. B- corneal abrasion. C- keratoconus. D- disciform keratitis.

39-

kerat eratit itis is met metaherp aherpet etic ica a can can be cau caused sed by: by:

A- active active viral viral inf infection. B- immune reaction reaction to stroma. stroma. C- abuse abuse of anti antivir viral. al. D- strom tromal al scar scarri ring ng..

40-

in recurr recurrent ent HS HS kera keratitis: titis:

A- antivi antivirral ther theraby aby is not not eff effective. ective. B- there there is extensive extensive vasula vasulariz rization ation.. C- there is tendency tendency of corneal corneal perfo perfora ration. tion. D- there there are are deep stro stromal mal infil infiltr trati ation. on.

41-

which of of these corneal corneal curvatur curvatures es can can cause more tendencies toward myopia:

A- 7.5mm. B- 7.8mm. C- 8.0 8.0mm. D-8.2mm.

42-

which of the is not ccc of HS keratitis:

A- its central location. B- the presence of hypothesia. C- the deep location of infiltration. D- the tendency of recurrence.

43-

a patient presented with ocular pain, +ve FL stain of the cornea with a constricted pupil, & high IOP. The following is contraindicated:

A- atropine. B- pilocarpine. C- CAIs. D- BB.

44-

the most common indication for keratometry is the following except:

A- diagnosis of astigmatism. B- diagnosis of keratoconus. C- before CL fitting. D- before keratoplasty.

45-

which of the following is not true about abrasion:

A- not stain with FL. B- usually involve Bowmans membrane. C- it affect corneal luster. D- it affect corneal transparency.

46-

water from the swimming pool splashed into the eye of soft CL wearer, the patient rubbed his eyes. 2 weeks later he developed severe pain, red eye, DV. He received broad spectrum AB ed & oint. Fot 2 weeks but he deteriorated. The next step:

A- C/S for spesific AB. B- culture for fungus. C- culture for acanthameba. D- culture for virus.

47-

one year after an attack of HZ, a patient developed central corneal ulcer that resisted the usual line of ttt with loss of corneal sensation, the ttt of choice:

A- subconjunctival AB. B- cauterization with carbolic acid. C- topical antiviral ED& oint. D- therapeutic CL.

48-

a female patient C/O of history of old perforated central corneal ulcer that ended in a blind ugly opaque cornea. Your management:

A- lammellar keratoplasty. B- PKP. C- clear pupil coloured CL. D- black pupil coloured CL.

49-

in kayser flischer ring the pigment deposited

Is: A- melanin. B- haemosidrein. C- cu compound. D- zinc compound.

50-

one of the following signs disappears with ttt:

A- Pannus siccus. B- Tranta spot. C- Arlets line. D- Arcus senilis.

51-

the following signs are present in peripheral leukoma adherent except:

A- pear shaped pupil. B- irregular depth of AC. C- PS. D- iris adherence to the back of the cornea.

52-

bacteria that invade healthy corneal epithelium:

A- N.gonorrhea. B- staph epidermidis. C- corynebacterium Diphteria. D- H.influnza.

53-

signs of bacterial corneal ulcer dont include:

A- miotic pupil. B- ciliary injection. C- lost luster with +ve FL test. D- fleshy pannus.

54-

a patient 65 y old, diabetic, since 15 y was presented by red painful eye. On EX: this eye showed dull cornea, ciliary injection, pus in the AC, there was also +VE regurge from the lower pnctum. The most reliable diagnosis is:

A- acute ant. Uveitis. B- acute pnemococcal CU. C- acute dacryocystitis. D- acute congestive glucoma.

55-

in the above case all the following is soon indicated except:

A- control blood sugar. B- C/S test. C- DCR. D- broad spectrum AB till the results of the culture. E- hopsitalization.

56-

a male 35y old, was complaining of redness,blurring of vision in the Lt eye, he mentioned that the same condition has happened last year. On examination the cornea showed an irregular linear defect. To reach the diagnosis one must do:

A- regurge test. B- corneal scrapping. C- corneal senstivity. D- measurmet of IOP.

57-

in the above case if corneal senstivity is impaired the most reliable diagnosis is:

A- bacterial keratitis. B- recurrent herpetic ulcer. C- phylectnular ulcer. D- trachomatous ulcer.

58-

disciform keratitis is a complication of  herpetic keratitis, due to:

A- concurrent infection with pemococci. B- concurrent infection with HZ. C- hypersenstivity reaction to the viral protien. D- abuse of antivirals.

59-

management of herpetic CU can be by the following except:

A- adenine arabinoside. B- Trifluorothymidine. C- prednisolone. D- cycloguaninase.

60-

ttt of disciform keratitis consist of:

A- topical antiviral+ topical AB. B- topical antiviral+ systemic AB. C- topical antiviral+ topical steroids. D- topical +systemic antiviral.