Eye Anatomy Essential Quiz
Welcome to this comprehensive quiz designed specifically for optometry students, medical professionals, and anyone preparing for healthcare and government recruitment exams. Understanding the intricate details of eye anatomy, visual pathways, and optical principles is crucial for both clinical practice and academic success.
This carefully curated collection of multiple-choice questions covers fundamental topics ranging from visual acuity and lens properties to extraocular muscles and retinal layers.
Attempt Part 1: Optometry MCQs: 50 Eye Dimensions and Refraction MCQsAttempt Part 2: Test Your Eye Anatomy Knowledge: 50 Advanced Optometry MCQs
Whether you are revising for an upcoming medical entrance exam, preparing for a paramedical test, or simply looking to brush up on your clinical ophthalmology basics, these 50 essential MCQs will help you assess your knowledge. Each question is accompanied by a clear explanation to ensure you not only test your memory but also strengthen your core concepts. Let's dive in and test your expertise!
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Q. 1: What is the measurement of central vision ?
A) Visual acuity
B) Visual field
C) Visual pathway
D) All of above
EXPLANATION: Visual acuity is the measurement of central vision only.
Q. 2: Which of the following represents normal vision ?
A) 6/60 or 20/200
B) 6/6 or 20/20
C) 6/9 or 20/30
D) 6/36 or 20/1000
EXPLANATION: 6/6 or 20/20 is represents normal vision.
Q. 3: What distance should the patient be from the Snellen's chart/box to check visual acuity ?
A) 3 meters
B) 1 meters
C) 6 meters
D) 4 meters
EXPLANATION: 6 meters distance should the patient be from the mirror to check visual acuity.
Q. 4: What is full form of "NLP" ?
A) No Lens Power
B) No Light Projections
C) No Light Perception
D) No Limit Perception
EXPLANATION: No Light Perception is full form of "NLP".
Q. 5: Which of the following is a property of a convex lens ?
A) + Power, Magnification
B) Uses in Hypermetropia and Presbyopia
C) Aganist/Opposite direction motion
D) All of these
EXPLANATION: All of these properties are a convex lens.
Q. 6: Which of the following is a property of a concave lens ?
A) - Power, Minification
B) Uses for Myopia correction
C) With/Same direction motion
D) All of these
EXPLANATION: All of these properties are a concave lens.
Q. 7: What is full form of "PR" ?
A) Power of refraction
B) Projection of rays
C) Power of retinoscope
D) Perception of rays
EXPLANATION: Projection of rays is full form of "NLP".
Q. 8: Why is a cylindrical lens used ?
A) Correction for Presbyopia
B) Correction for Myopia
C) Correction for Astigmatism
D) Correction for Hypermetropia
EXPLANATION: The cylindrical lens used to correction for Astigmatism.
Q. 9: Where does the visual pathway begin ?
A) Optic nerve
B) Retina
C) Optic disc
D) Crystalline Lens
EXPLANATION: The visual pathway is begin from Retina and end into cortex of occipital lobe.
Q. 10: Which of the following is a property of the optic nerve ?
A) Sensory, No regenerate capacity.
B) Not covered by neurilema.
C) Length = 47-50 mm, Diameter =2-10 µm
D) All of these
EXPLANATION: All of these are property of the optic nerve.
Q. 11: Which of the following is not a property of the optic chiasma ?
A) Cross site of both optic nerves
B) Flattened structure
C) Lies above tuberculum
D) Ovel structure
EXPLANATION: Optic chiasma has flattened structure (12 mm Horizontal and 8 mm anterio-posteriorly).
Q. 12: How many structure found in visual pathway ?
A) 5
B) 6
C) 7
D) 8
EXPLANATION: Number of 7 structures found in visual pathway. (Retina, Optic nerve, Optic chiasma, Optic tracts, Lateral geniculate body, Optic radiation, Visual cortex)
Q. 13: Ophthalmic artery is a branch of which of these arteries ?
A) Episcleral artery
B) Internal carotid artery
C) External carotid artery
D) Axillary artery
EXPLANATION: Ophthalmic artery is a branch of internal carotid artery.
Q. 14: Which of the following artery is not a part of ocular group artery?
A) Posterior ciliary artery
B) Anterior ciliary artery
C) Lacrimal artery
D) Central retinal artery
EXPLANATION: Lacrimal artery is the part of orbital group artery.
Q. 15: Which of the following are function of the aqueous humour ?
A) Maintains IOP of eyeball
B) Nourishment to cornea and lens
C) Maintains optical transparency
D) All of these
EXPLANATION: All of these are functions of the aqueous humour.
Q. 16: Which of the following are the membrane of the vitreous humour ?
A) Anterior hyaloid membrain
B) Posterior hyaloid membrain
C) Both
D) None of these
EXPLANATION: Anterior hyaloid membrain and Posterior hyaloid membrain are the membrane of the vitreous humour.
Q. 17: Which of the following is the composition of the vitreous ?
A) 99% Water
B) Collagen fibrils, Salts
C) Proteins and Hyaluronic acid
D) All of these
EXPLANATION: All of these are composition of the vitreous.
Q. 18: Which of the following is the function of the vitreous humour?
A) Shock absorber, Protect retina
B) Maintain optical transparency
C) Storage for metabolites
D) All of these
EXPLANATION: All of these are functions of the vitreous humour.
Q. 19: Which of the following structure is not a part of lens ?
A) Lens capsule
B) Anterior epithelium
C) Posterior epithelium
D) Lens fibres
EXPLANATION: Posterior epithelium is not present in lens.
Q. 20: Which of the following is correct regarding the thickness of the lens capsule ?
A) Thickest at pre-equator = 14 µm
B) At anterior pole = 10 µm
C) Thinnest at posterior pole = 3 µm
D) All of these
EXPLANATION: All of these are correct.
Q. 21: Which of the following is involved in the composition of the lens capsule ?
A) Type Ⅳ collagen fibres
B) Sulphated Glycoaminoglycans
C) Both
D) None of these
EXPLANATION: Type Ⅳ collagen fibres and sulphated Glycoaminoglycans are the composition of the lens capsule.
Q. 22: Which statement is correct regarding the anterior epithelium of the lens ?
A) A-cells made of cuboidal cells
B) E-cells made of columnar cells
C) E-cells has Mitosis Capability
D) All of these
EXPLANATION: All of these statement are correct.
Q. 23: Suspensory ligaments of lens is called ?
A) Zonules
B) Zonules of zinn
C) Ciliary zonules
D) All of these
EXPLANATION: All of these are called suspensory ligaments of lens.
Q. 24: The primary function of superior rectus muscle is ?
A) Elevation
B) Depression
C) Abduction
D) Extorsion
EXPLANATION: The primary function of superior rectus is elevation.
Q. 25: The primary function of superior oblique muscle is ?
A) Elevation
B) Intorsion
C) Abduction
D) Extorsion
EXPLANATION: The primary function of superior oblique muscle is intorsion.
Q. 26: The primary function of Inferior oblique muscle is ?
A) Elevation
B) Intorsion
C) Abduction
D) Extorsion
EXPLANATION: The primary function of Inferior oblique muscle is extorsion.
Q. 27: The primary function of Inferior rectus muscle is ?
A) Elevation
B) Intorsion
C) Abduction
D) Depression
EXPLANATION: The primary function of Inferior rectus muscle is depression.
Q. 28: The primary function of medial rectus muscle is ?
A) Adduction
B) Intorsion
C) Abduction
D) Depression
EXPLANATION: The primary function of medial rectus muscle is adduction.
Q. 29: The primary function of Lateral rectus muscle is ?
A) Adduction
B) Intorsion
C) Abduction
D) Depression
EXPLANATION: The primary function of Lateral rectus muscle is abduction.
Q. 30: When some muscles having the same action/function in the eye, they called as ?
A) Antagonist muscles
B) Synergists muscle
C) Both
D) None of these
EXPLANATION: When some muscles having the same primary action, they called as synergists muscle. Example: Superior rectus and Inferior oblique
Q. 31: When some muscles having the opposite action/function in the eye, they called as ?
A) Antagonist muscles
B) Synergists muscle
C) Both
D) None of these
EXPLANATION: When some muscles having the opposite action/function in the eye, they called as Antagonist muscles. Example: SR vs IR, MR vs LR, SO vs IO
Q. 32: Number of extraocular muscles is ?
A) 9
B) 6
C) 7
D) 5
EXPLANATION: Number of 6 extraocular muscles moves to eyeball.
Q. 33: The four rectus muscles originate from ?
A) Annules of zinn (Tendinous ring)
B) Limbus
C) Ora serrata
D) Choroid
EXPLANATION: The four rectus muscles originate from annules of zinn (Common tendinous ring).
Q. 34: The CN Ⅲ (Oculomotor) not provoided motor supply to the ?
A) Superior rectus and Inferior rectus
B) Medial rectus
C) Lateral rectus
D) Inferior oblique
EXPLANATION: The CN Ⅵ (Abducens) provoided motor supply to the Lateral rectus.
Q. 35: The CN Ⅳ (Trochlear) provoided motor supply to the ?
A) Superior oblique muscle
B) Medial rectus muscle
C) Lateral rectus muscle
D) Inferior oblique muscle
EXPLANATION: The CN Ⅳ (Trochlear) provoided motor supply to the superior oblique muscle.
Q. 36: Process, in which the eye changes optical power to maintain make a clear image on retina, is called as ?
A) Visual acuity
B) Accommodation
C) Visual field
D) Myopia
EXPLANATION: Process, in which the eye changes optical power to maintain make a clear image on retina, is called as "accommodation".
Q. 37: Which of the following is correct about near point ?
A) Being about 7 cm at age of 10 y
B) Being about 25 cm at age of 40 y
C) Being about 33 cm at above 45 y
D) All of these
EXPLANATION: All of these statement is correct.
Q. 38: Which of the following is a anomalies of accommodation ?
A) Accommodation's Insufficiency
B) Accommodation's Paralysis
C) Accommodation's spasm, Presbyopia
D) All of these
EXPLANATION: All of these are anomalies of accommodation.
Q. 39: Which of the following nerve is responsible for visual field ?
A) Ophthalmic nerve
B) Optic Nerve
C) Oculomotor nerve
D) Facial nerve
EXPLANATION: The optic Nerve is responsible for visual field.
Q. 40: The oculomotor nerve provides motor innervation to the ?
A) Levator palpebrae superioris muscle
B) Ciliary muscles (Parasympathetic)
C) Iris sphincter (Parasympathetic)
D) All of these
EXPLANATION: All of these muscles and SR, IR, MR, IO muscles is innervated by oculomotor nerve.
Q. 41: The facial nerve provides motor innervation to the ?
A) Lacrimation and corneal sites
B) Orbicularis oculi muscles
C) Both
D) None of these
EXPLANATION: The facial nerve provides motor innervation to the orbicularis oculi muscles, lacrimation and corneal surface sites.
Q. 42: Which nerve is innervated to lacrimal glands ?
A) Ophthalmic nerve
B) Optic Nerve
C) Lacrimal nerve
D) Facial nerve
EXPLANATION: The Lacrimal nerve, which originated from long ciliary nerves of nasociliary of ophthalmic of trigeminal nerve innervated to lacrimal glands.
Q. 43: Which nerve is innervated to the conjunctiva ?
A) Supratrochelar nerve
B) Infratrochelar nerve
C) Supraorbital nerve
D) All of these
EXPLANATION: All of these are originated from long ciliary nerves of nasociliary of ophthalmic of trigeminal nerve; innervated to conjunctiva.
Q. 44: Which of the following statement is correct about visual field ?
A) Approximately 90° at temporal side
B) Approximately 60° at nasal side
C) Approximately 50° at above side
D) All of these
EXPLANATION: All of these options are correct.
Q. 45: Vsual field divided into ?
A) Two fields
B) Four fields
C) Three fields
D) None of these
EXPLANATION: Vsual field divided into 2 fields. (Central= From the fixation point to a circle 30° away, Peripheral= Beyond 30° to outer.)
Q. 46: Visual field loss in ?
A) Multiple sclerosis
B) Glaucoma, Lesions in retina
C) Hyperthyroidism, Lesions in visual pathway
D) All of these
EXPLANATION: All of these pathological conditions affected to the visual field.
Q. 47: Which of the following mathod used to test for visual field ?
A) Goneoscopy
B) Perimrtry
C) Tonometry
D) Retinoscopy
EXPLANATION: Perimrtry used to test for visual field.
Q. 48: Checking near visual acuity, distance between patient eye from jaeger's chart should be ?
A) 200 cm
B) 20 cm
C) 35 cm
D) 6 m
EXPLANATION: Checking near visual acuity, distance between patient eye from jaegers chart should be 35 cm.
Q. 49: Which of the following layers is not found in choroid ?
A) Haller (external) and Sattler (internal)
B) Choriocapillaris layer
C) Bruch's membrane
D) Anterior epithelial layer
EXPLANATION: Anterior epithelial layer is found in Iris.
Q. 50: Which of the following are included in the fundus of the retina ?
A) Macula lutea
B) Optic disc
C) Fovea centralis
D) All of these
EXPLANATION: The macula, fovea and optic disc are collectively called the fundus of the retina.
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