10 - 50 important mcqs in opthalmology

1- other name of lowe's syndrome ? oculo- cerebral - renal syndrome .

2- etiology of lowe's syndrome ? rare inborn error of amino acid metabolism .

3- features of lowe syndrome ? ocular- congenital cataract and glaucoma , systemic features - mental retardation , dwarfism , osteomalacia , muscular hypotonia , and frontal prominence .

4- snow flake cataract is seen in ? diabetes mellitus .

5- sunflower cataract is seen in ? wilson's disease ( hepatolenticular degeneration )

6-most common ocular feature of wilson's disease ? kayser fleischer ring ( KF ring ) seen in the cornea .

7-most common type of congenital cataract ? zonular or lamellar cataract

8- powdery appearance of the lenticular opacity is seen in? cataract centralis pulverulenta

9- munson's sign is seen in ? KERATOCONUS

10- normal anterior chamber depth ? 2 to 3 mm ( 2.5 mm )

11-protanopes have difficulty in identifyin which colour ? RED

12- colour blindness is hereditary , not age related , occurs only in males and cannot be treated .

13- treatment of presbyopia ? convex lens

14- distance used in direct distant opthalmoscopy ? 25 cms

15- causes of amaurotic cats eye reflex ( leucokoria ) ?
a- fungal endophthalmitis ( toxocara ) ,
b- retinoblastoma
c- retinal detachment
d- retrolental hyperplasia ( retinopathy of prematurity )
e- congenital cataract
f- persistent hyperplastic primary vitreous
g- inflammatory deposits in eye
h- coloboma of choroid
i - tuberculoma of choroid
j-exudative retinopathy of COATS
k- cyclitic membrane

16- presbyopia is not a refractive error

17- commonest cause of low vision in india ? uncorrected refractive errors

18- commonest cause of blindness in india ? cataract

19- constantly changing refractory error is seen ? DIABETIC CATARACT

20- infant eye at birth is ? hypermetropic of 2 dioptres .

21- total diopteric power of eye ? 60 diopters

22- presbyopia is caused by ? loss of accomodation

23- the graph of the movement of eye is called ? electronystagmogram .

24- keratometer is used to assess the curvature of the cornea .

25- snellens chart is used to test ? vision

26- the nerves tested in the pupilllary reflex ? the optic nerve and the oculomotor nerve ( second and the third ) .

27- angle of the anterior chamber is visualised by ? slit lamp examination and gonioscopy .

28- in a patient of 20 years presenting with moving floaters .. diagnosis is done by ? INDIRECT OPTHALMOSCOPY

29-length of the eye ball - 24 mm

30- commonest type of colour blindness ? PROTANOPES ( RED DEFECT )

31- indirect opthalmoscope -

a- image is real and inverted
b- details of the fundus can be seen even with slightly hazy media
c- magnification less than direct opthalmoscope
d- used for seeing the periphery of the fundus

32- best method for examination of the periphery of the retina ? BINOCULAVIN INDIRECT OPTHALMOSCOPE

33- magnification of the direct opthalmoscope ? fifteen times . 15

34- image formed in direct opthalmoscope ? VIRTUAL AND ERECT .

35- in flourescein angiography of retinal vessels the dye is injected into which vessel ? ANTERIOR CUBITAL VEIN ( ante cubital vein )

36- in cerebral angiography the dye is injected into which vessel ? CAROTID ARTERY

37 - indirect opthalmoscopy is done for
a- PERIPHERY OF RETINA , b- centre of retina , c- sclera , d- angle of the anterior chamber

38-gonioscopy is used to study ? angle of the anterior chamber of the eye

39-flourescein angiography is used to identify lesions in all except ? LENS ( because it is avascular )

40- periphery of retina is visualised by indirect opthalmoscopy

41- ulcer serpens is caused by - PNEUMOCOCCUS

42- the extra ocular muscle which is served by a contralateral brain stem subnucleus ? SUPERIOR RECTUS

43- twilight vision is by? rods

44- commonest cause of keratitis in soft contact lens user ? acanthamoeba

45- chalcosis is seen with ? COPPER

46- contraindications of topical beta blockers which are normally used in the treatment of the acute angle closure glaucoma ? asthma , hypotension and depression.

47- patient suffered blunt trauma to the eye and after that he developed sudden loss of vision with deep anterior chamber , most likely cause is ? lens dislocation

48- keratoconus - munson's sign , thinning of cornea in center , distortion of corneal reflex in the center , no hypermetropia seen.

49- thickness of cornea is measured by - PACHYMETER

50 - spring catarrh is otherwise called ? VERNAL KERATOCONJUNCTIVITIS .