OPTHALMOLOGY- PAGE 4
OPTHALMOLOGY MCQs
1:-A snellen visual acuity of 20/200 is equivalent to which of the following IogMAR values. A:-1.00 B:-0 C:-10.00 D:-0.10 Ans: A
2:-The corneal endothelium on slitlamp biomicroscopy is examined using A:-Direct illumination B:-Sclerotic scatter C:-Specular reflection D:-Retro illumination Ans: C
3:-Which of the following does not commonly cause glare? A:-lritis B:-Corneal scar C:-Posteriorsubcapsular cataract D:-Albinism Ans: A
4:-Corneal haze in corneal edema is primarily due to A:-reflection B:-light scattering C:-refraction D:-diffraction Ans: B
5:-All of the following statements are true regarding photoreceptors except A:-There are approximately 120 million rods in the eye B:-Rods are absent at the fovea C:-The ratio of Photoreceptors to Ganglion cells is 10:1 D:-There are approximately 20 million cones in the eye Ans: C
6:-Sphincter and dilator muscle of iris is derived from A:-surface ectoderm B:-mesenchyme C:-neuroectoderm D:-pupillary membrane Ans: C
7:-Regarding angle kappa, which is the correct statement? A:-It is the angle between optic axis and visual axis B:-Positive angle kappa is seen in myopia C:-It is the angle between pupillary axis and visual axis D:-Positive angle Kappa gives the appearance of pseudoesotropia Ans: C
8:-Which of the following statements is true? A:-Basal tear secretion is maintained by the main lacrimal gland B:-Schirmers Test ll measures the basal tear secretion only C:-TBUT test less than 10 sec is normal D:-Schirmer Test l measures both basal & reflex secretion Ans: D
9:-Stiles-Crawford effect refers to
A:-reduced sensitivity of peripheral retina
B:-Peripheral rays cut off by iris to counteract optical aberrations
C:-greater sensitivity of retinal photoreceptors to perpendicular rays rather than oblique rays
D:-higher refractive index of core of lens nucleus than peripheral cortex
Ans: C
10:-AIl the following statements regarding aqueous humour are true except A:-The glucose content is approximately 80% of that of plasma B:-The lactate concentration is twice that of plasma C:-Aqueous has relatively low ascorbic acid content D:-Active secretion accounts for the major fraction in aqueous secretion Ans: C
11:-Regarding extra ocular movements - identify the false statement A:-The primary action of inferior oblique is excyclotorsion B:-The right inferior oblique & Left superior rectus are yoked muscles C:-The primary action of superior oblique muscle is incyclotorsion D:-The Right medial rectus & Left lateral rectus are antagonistic muscles Ans: D
12:-The following charts are used in the testing of contrast sensitivity except A:-Vistech chart B:-Cambridge gratings C:-Rosenbaums chart D:-Regan charts Ans: C
13:-ln fourth nerve palsy A:-Hyperdeviation increases on contralateral head tilt B:-Microvascular occlusion is the most common cause C:-Vertical fusion range more that 3D suggests congenital palsy D:-Excyclotorsion less than 10 degrees suggest bilateral involvement Ans: D
14:-ln Electrophysiology, which of the following statement is true A:-The EOG originates in the photoreceptors B:-The a wave of ERG originates in muller cells C:-Pattern ERG is a measure of ganglion cell function D:-100% is an abnormal Arden ratio Ans: C
15:-The Enhanced depth imaging modality in OCT is primarily useful in studying A:-Inner retinal layers B:-Outer retinal layers C:-Choroid D:-Middle retinal layers Ans: C
16:-All of the following are true regarding the lacrimal drainage system except A:-PositiveJones dye test implies physiological functioning of the system B:-soft stop is characteristic of canalicular obstruction C:-In lacrimal pump failure, Jones dye test is negative D:-lipiodal is the agent used in scintillography Ans: D
17:-Regarding Anisocoria, A:-lncreased anisocoria in dim light implies abnormality of the smaller pupil B:-vermiform movements of pupil is seen in Horner's syndrome C:-Physiological anisocoria is seen in 10% of population D:-ln longstanding Adie's pupil, the pupil appears to be larger in size Ans: A
18:-CT vesus MRI, All of the following are true except A:-CT has faster image acquisition time B:-CT shows artefacts from dental amalgam & bone C:-MRl can display images in any anatomical plane D:-In MRI, bright signal within vessel indicates blood flow Ans: D
19:-Which of the following are true? A:-Heroin causes mydriasis B:-Botulinum toxin causes miosis C:-Nicotine produces mydriasis D:-Amphetamine causes miosis Ans: C
20:-Results of streak retinoscopy performed on an adult patient at a testing distance of 67 cm is as follows: + 2D sph neutralises reflex when streak is horizontal (180); + 3D sph neutralises reflex when streak is vertical (90). Which of the following refraction is correct?
A:-+0.50 Dsph + 1 Dcyl 90 degrees
B:-+0.50 Dsph - 1 Dcyl 90 degrees
C:-+2.00 Dsph + 1 Dcyl 90 degrees
D:-+2.00 Dsph -1 Dcyl 90 degrees
Ans: A
21:-Bruckner's test is A:-useful test to measure deviation in strabismus B:-done using indirect ophthalmoscope C:-used in screening of strabismus & anisometropia in infants D:-difference in colour of fundal reflex more important than brightness Ans: C
22:-Corneal wedge technique in gonioscopy is useful to identify A:-schwalbe's line B:-anterior nonpigmented Trabeculum C:-posterior pigmented Trabeculum D:-scleral spur Ans: A
23:-The following statements are true regarding Brimonidine except A:-selective alpha blocker B:-follicular conjunctivitis C:-hypotension D:-apnoea Ans: A
24:-Charles Bonnet syndrome is characterised by all except A:-visual hallucinations B:-severe visual impairment C:-patients have insight into the nature of their illness D:-patients often have associated neurologicaI/psychiatric illness Ans: D
25:-Pick out the wrong drug composition of prostaglandin analogues A:-Latanoprost 0.005% B:-Bimatoprost 0.02% C:-Travaprost 0.004% D:-Brimonidine 0.15% Ans: B
26:-Preperimetric diagnostic Tests in glaucoma include all except A:-SWAP B:-OCT C:-Glaucoma hemifield Test D:-scanning laser polarimeter Ans: C
27:-Regarding Acanthamoeba, all are true except A:-exists as active trophozoite or dormant cysts B:-have been isolated from public water supplies & soil C:-Neomycin is effective against both Trophozoite & cysts D:-lt is grown on non nutrient agar Ans: C
28:-Vancomycin A:-Inten‘eres with nucleic acid synthesis B:-Is bactericidal against Gram negative bacteria
C:-ls poorly absorbed from gut D:-Intravitreal dose is 400 pg/0.1ml Ans: C
29:-Statistical analysis in Octopus perimetry includes all except A:-pattern standard deviation B:-loss variance C:-mean sensitivity D:-bebie curve Ans: A
30:-Properties of the drug Foscarnet includes all except A:-It reversibly inhibits viral specific DNA polymerase & reverse transcriptase. B:-lt has an intrinsic anti HIV effect C:-lt is active against CMV virus D:-Neutropenia is a common side effect Ans: D
31:-Double circulation in FFA is seen in A:-Retinal telangiectasia B:-Choroidal melanoma C:-Angioid streaks D:-Retinoblastoma Ans: B
32:-Glaucoma in angle recession is due to A:-damage to Trabecular meshwork B:-associated lens subluxation C:-lridodialysis D:-tears in the ciliary body Ans: A
33:-Optic nerve glioma is most frequently associated with A:-Sturge - weber syndrome B:-Neurofibromatosis Type 1 C:-Peters anomaly D:-Neurofibromatosis Type 2 Ans: B
34:-Posner Schlossman syndrome is characterised by A:-chronic low grade iritis B:-extensive peripheral anterior synechiae C:-stellatekeratic precipitates D:-few aqueous cells & keraticprecipates Ans: D
35:-The following statements are true about cilioretinal artery except A:-cilioretinal artery is present in about 30% individuals B:-cilioretinal artery occlusion may occur in combination with AION C:-cilioretinal artery is a branch of ophthalmic artery D:-cilioretinal artery occlusion may occur in combination with CRVO Ans: C
36:-Selective laser Trabeculoplasty is a good option in the treatment of A:-Primary angle closure glaucoma B:-Primary open angle glaucoma C:-Angle recession glaucoma D:-Congenital glaucoma Ans: B
37:-Minimal invasive glaucoma surgery includes all except A:-Express shunt B:-i stent C:-AADl D:-xen gel implant Ans: C
38:-Congenital stationary night blindness is a feature of A:-Lebers congenital amaurosis
B:-Fundus albipunctatus C:-Usher syndrome D:-Retinitis punctataalbescens Ans: B
39:-The commonest type of intraocular tumour is A:-melanoma B:-retinoblastoma C:-lymphoma D:-metastatic neoplasm Ans: D
2:-The corneal endothelium on slitlamp biomicroscopy is examined using A:-Direct illumination B:-Sclerotic scatter C:-Specular reflection D:-Retro illumination Ans: C
3:-Which of the following does not commonly cause glare? A:-lritis B:-Corneal scar C:-Posteriorsubcapsular cataract D:-Albinism Ans: A
4:-Corneal haze in corneal edema is primarily due to A:-reflection B:-light scattering C:-refraction D:-diffraction Ans: B
5:-All of the following statements are true regarding photoreceptors except A:-There are approximately 120 million rods in the eye B:-Rods are absent at the fovea C:-The ratio of Photoreceptors to Ganglion cells is 10:1 D:-There are approximately 20 million cones in the eye Ans: C
6:-Sphincter and dilator muscle of iris is derived from A:-surface ectoderm B:-mesenchyme C:-neuroectoderm D:-pupillary membrane Ans: C
7:-Regarding angle kappa, which is the correct statement? A:-It is the angle between optic axis and visual axis B:-Positive angle kappa is seen in myopia C:-It is the angle between pupillary axis and visual axis D:-Positive angle Kappa gives the appearance of pseudoesotropia Ans: C
8:-Which of the following statements is true? A:-Basal tear secretion is maintained by the main lacrimal gland B:-Schirmers Test ll measures the basal tear secretion only C:-TBUT test less than 10 sec is normal D:-Schirmer Test l measures both basal & reflex secretion Ans: D
9:-Stiles-Crawford effect refers to
A:-reduced sensitivity of peripheral retina
B:-Peripheral rays cut off by iris to counteract optical aberrations
C:-greater sensitivity of retinal photoreceptors to perpendicular rays rather than oblique rays
D:-higher refractive index of core of lens nucleus than peripheral cortex
Ans: C
10:-AIl the following statements regarding aqueous humour are true except A:-The glucose content is approximately 80% of that of plasma B:-The lactate concentration is twice that of plasma C:-Aqueous has relatively low ascorbic acid content D:-Active secretion accounts for the major fraction in aqueous secretion Ans: C
11:-Regarding extra ocular movements - identify the false statement A:-The primary action of inferior oblique is excyclotorsion B:-The right inferior oblique & Left superior rectus are yoked muscles C:-The primary action of superior oblique muscle is incyclotorsion D:-The Right medial rectus & Left lateral rectus are antagonistic muscles Ans: D
12:-The following charts are used in the testing of contrast sensitivity except A:-Vistech chart B:-Cambridge gratings C:-Rosenbaums chart D:-Regan charts Ans: C
13:-ln fourth nerve palsy A:-Hyperdeviation increases on contralateral head tilt B:-Microvascular occlusion is the most common cause C:-Vertical fusion range more that 3D suggests congenital palsy D:-Excyclotorsion less than 10 degrees suggest bilateral involvement Ans: D
14:-ln Electrophysiology, which of the following statement is true A:-The EOG originates in the photoreceptors B:-The a wave of ERG originates in muller cells C:-Pattern ERG is a measure of ganglion cell function D:-100% is an abnormal Arden ratio Ans: C
15:-The Enhanced depth imaging modality in OCT is primarily useful in studying A:-Inner retinal layers B:-Outer retinal layers C:-Choroid D:-Middle retinal layers Ans: C
16:-All of the following are true regarding the lacrimal drainage system except A:-PositiveJones dye test implies physiological functioning of the system B:-soft stop is characteristic of canalicular obstruction C:-In lacrimal pump failure, Jones dye test is negative D:-lipiodal is the agent used in scintillography Ans: D
17:-Regarding Anisocoria, A:-lncreased anisocoria in dim light implies abnormality of the smaller pupil B:-vermiform movements of pupil is seen in Horner's syndrome C:-Physiological anisocoria is seen in 10% of population D:-ln longstanding Adie's pupil, the pupil appears to be larger in size Ans: A
18:-CT vesus MRI, All of the following are true except A:-CT has faster image acquisition time B:-CT shows artefacts from dental amalgam & bone C:-MRl can display images in any anatomical plane D:-In MRI, bright signal within vessel indicates blood flow Ans: D
19:-Which of the following are true? A:-Heroin causes mydriasis B:-Botulinum toxin causes miosis C:-Nicotine produces mydriasis D:-Amphetamine causes miosis Ans: C
20:-Results of streak retinoscopy performed on an adult patient at a testing distance of 67 cm is as follows: + 2D sph neutralises reflex when streak is horizontal (180); + 3D sph neutralises reflex when streak is vertical (90). Which of the following refraction is correct?
A:-+0.50 Dsph + 1 Dcyl 90 degrees
B:-+0.50 Dsph - 1 Dcyl 90 degrees
C:-+2.00 Dsph + 1 Dcyl 90 degrees
D:-+2.00 Dsph -1 Dcyl 90 degrees
Ans: A
21:-Bruckner's test is A:-useful test to measure deviation in strabismus B:-done using indirect ophthalmoscope C:-used in screening of strabismus & anisometropia in infants D:-difference in colour of fundal reflex more important than brightness Ans: C
22:-Corneal wedge technique in gonioscopy is useful to identify A:-schwalbe's line B:-anterior nonpigmented Trabeculum C:-posterior pigmented Trabeculum D:-scleral spur Ans: A
23:-The following statements are true regarding Brimonidine except A:-selective alpha blocker B:-follicular conjunctivitis C:-hypotension D:-apnoea Ans: A
24:-Charles Bonnet syndrome is characterised by all except A:-visual hallucinations B:-severe visual impairment C:-patients have insight into the nature of their illness D:-patients often have associated neurologicaI/psychiatric illness Ans: D
25:-Pick out the wrong drug composition of prostaglandin analogues A:-Latanoprost 0.005% B:-Bimatoprost 0.02% C:-Travaprost 0.004% D:-Brimonidine 0.15% Ans: B
26:-Preperimetric diagnostic Tests in glaucoma include all except A:-SWAP B:-OCT C:-Glaucoma hemifield Test D:-scanning laser polarimeter Ans: C
27:-Regarding Acanthamoeba, all are true except A:-exists as active trophozoite or dormant cysts B:-have been isolated from public water supplies & soil C:-Neomycin is effective against both Trophozoite & cysts D:-lt is grown on non nutrient agar Ans: C
28:-Vancomycin A:-Inten‘eres with nucleic acid synthesis B:-Is bactericidal against Gram negative bacteria
C:-ls poorly absorbed from gut D:-Intravitreal dose is 400 pg/0.1ml Ans: C
29:-Statistical analysis in Octopus perimetry includes all except A:-pattern standard deviation B:-loss variance C:-mean sensitivity D:-bebie curve Ans: A
30:-Properties of the drug Foscarnet includes all except A:-It reversibly inhibits viral specific DNA polymerase & reverse transcriptase. B:-lt has an intrinsic anti HIV effect C:-lt is active against CMV virus D:-Neutropenia is a common side effect Ans: D
31:-Double circulation in FFA is seen in A:-Retinal telangiectasia B:-Choroidal melanoma C:-Angioid streaks D:-Retinoblastoma Ans: B
32:-Glaucoma in angle recession is due to A:-damage to Trabecular meshwork B:-associated lens subluxation C:-lridodialysis D:-tears in the ciliary body Ans: A
33:-Optic nerve glioma is most frequently associated with A:-Sturge - weber syndrome B:-Neurofibromatosis Type 1 C:-Peters anomaly D:-Neurofibromatosis Type 2 Ans: B
34:-Posner Schlossman syndrome is characterised by A:-chronic low grade iritis B:-extensive peripheral anterior synechiae C:-stellatekeratic precipitates D:-few aqueous cells & keraticprecipates Ans: D
35:-The following statements are true about cilioretinal artery except A:-cilioretinal artery is present in about 30% individuals B:-cilioretinal artery occlusion may occur in combination with AION C:-cilioretinal artery is a branch of ophthalmic artery D:-cilioretinal artery occlusion may occur in combination with CRVO Ans: C
36:-Selective laser Trabeculoplasty is a good option in the treatment of A:-Primary angle closure glaucoma B:-Primary open angle glaucoma C:-Angle recession glaucoma D:-Congenital glaucoma Ans: B
37:-Minimal invasive glaucoma surgery includes all except A:-Express shunt B:-i stent C:-AADl D:-xen gel implant Ans: C
38:-Congenital stationary night blindness is a feature of A:-Lebers congenital amaurosis
B:-Fundus albipunctatus C:-Usher syndrome D:-Retinitis punctataalbescens Ans: B
39:-The commonest type of intraocular tumour is A:-melanoma B:-retinoblastoma C:-lymphoma D:-metastatic neoplasm Ans: D
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