Advanced Optometry MCQs
Welcome to the second part of our comprehensive optometry and ophthalmology quiz series! Building upon fundamental concepts, this advanced set of 50 multiple-choice questions dives deeper into the clinical aspects of eye anatomy and physiological processes.
From understanding the layers of the cornea and retina to exploring the mechanisms of glaucoma and aqueous humor drainage, this quiz is tailored to challenge and refine your clinical knowledge.
Attempt Part 1: Optometry MCQs: 50 Eye Dimensions and Refraction MCQsWhether you are an optometry student gearing up for competitive exams, a medical professional brushing up on ocular anatomy, or a dedicated learner, these carefully selected MCQs will serve as an excellent self-assessment tool. Detailed explanations are provided for each question to help you grasp the intricate details of structures like the ciliary body, meibomian glands, and visual pathways. Get ready to put your advanced optometry skills to the test!
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Q. 1: Keratic precipitate seen in which layer of cornea ?
A) Corneal epithelium
B) Descemit's membraine
C) Corneal Endothelium
D) Bowmen's layer
EXPLANATION: Keratic precipitate seen in Corneal Endothelium of cornea.
Q. 2: Occipital lobe is part of which part of the brain ?
A) Forebrain
B) Midbrain
C) Hindbrain
D) None of these
EXPLANATION: Occipital lobe is part of cerebrum that part of forebrain.
Q. 3: Approximately how many times does a human blink his eyes in a minute ?
A) 20-25
B) 15-20
C) 10-15
D) 30
EXPLANATION: It is believed that a common person blinks at least 10-15 times in a minute.
Q. 4: Granular keratic precipitates made of ?
A) Epitheoid cells
B) Macrophages
C) Lymphocytes
D) RBC
EXPLANATION: Granular keratic precipitates made of Lymphocytes.
Q. 5: Iris bombe seen in ?
A) Uvetits
B) Conjunctivitis
C) Episcloritis
D) Trachoma
EXPLANATION: Iris bombe seen in Uvetits.
Q. 6: In glaucoma, last field to be affected ?
A) Nasal
B) Temporal
C) Central
D) Superior
EXPLANATION: In glaucoma, last field to be affected = central
Q. 7: Phthisis bulbi means ?
A) Irititis
B) Sarcoidosis
C) CMV
D) Size of globe reduced
EXPLANATION: Phthisis bulbi means = Size of globe reduced
Q. 8: In glaucoma, firstly field to be affected ?
A) Nasal
B) Temporal
C) Central
D) Peripheral
EXPLANATION: In glaucoma, firstly field to be affected = Peripheral
Q. 9: Number of bones that form to orbit/orbital cavity ?
A) 10
B) 1
C) 7
D) 6.5
EXPLANATION: Number of bones that form to orbit/orbital cavit = 7 (Frontal, Ethmoid, Lacrimal, Palatine, Maxilla, Zygomatic, Sphenoid)
Q. 10: Name of upper eyelid retractor ?
A) Superior Rectus
B) Levator palpebrae superioris
C) Inferior tarsal muscle
D) Orbicularis oculi muscle
EXPLANATION: Levator palpebrae superioris is upper eyelid retractor.
Q. 11: Name of lower eyelid retractor ?
A) Superior Rectus
B) Levator palpebrae superioris
C) Inferior tarsal muscle
D) Orbicularis oculi muscle
EXPLANATION: Inferior tarsal muscle is lower eyelid retractor.
Q. 12: Main function of orbicularis oculi ?
A) Forcibly close to eyelid
B) Addiction
C) lower eyelid retractor
D) Extortion of eyeball
EXPLANATION: Main function of orbicularis oculi are forcibly close to eyelid and assists in pumping the tears from the eye into the nasolacrimal duct system.
Q. 13: Thickness of sclera is ?
A) 0.5-1 mm
B) 3 mm
C) 9 mm
D) 7 mm
EXPLANATION: Thickness of sclera is = 0.5-1 mm
Q. 14: Which of the following layer is not present in sclera ?
A) Episclera
B) Sclera proper
C) Lamina fusca
D) Haller's layer
EXPLANATION: Haller's layer presented in the Choroid and it is first layer of choroid.
Q. 15: Which of the following layer gives the white color to the sclera ?
A) Episclera
B) Sclera proper
C) Lamina fusca
D) Haller's layer
EXPLANATION: Sclera proper gives the white color to the sclera
Q. 16: Which of the following structure produced to aqueous humour ?
A) Cornea
B) Ciliary process
C) Iris
D) Zonules
EXPLANATION: Ciliary process is produce to aqueous humour.
Q. 17: Normal production rate of aqueous humour ?
A) 15 mL/day
B) 60 mL/day
C) 3.5-5 mL/day
D) 70 mL/day
EXPLANATION: Normal production rate of aqueous humour = 3.5-5 mL/day or 2.0-2.5 µL/min
Q. 18: Number of layers present in sclera ?
A) 10
B) 6
C) 3
D) 4
EXPLANATION: Number of 3 layers present in sclera. (Episclera, Sclera proper, Lamina fusca
Q. 19: Which of the following structure form and control the size of pupil ?
A) Choroid
B) Iris
C) Cornea
D) Sclera
EXPLANATION: Iris is form and control the size of pupil.
Q. 20: Normal diameter of the iris is approximately ?
A) 5-6 mm
B) 10-11 mm
C) 15-16 mm
D) 50-60 mm
EXPLANATION: Normal diameter of the iris is approximately 10-11 mm.
Q. 21: Normal diameter of the pupil is approximately ?
A) 6 mm
B) 11 mm
C) 4 mm
D) 10 mm
EXPLANATION: Normal diameter of the pupil is approximately = 4 mm
Q. 22: Which of the following muscles presented in iris ?
A) Iris sphincter pupillae muscles
B) Iris dilator pupillae muscles
C) Both
D) None of these
EXPLANATION: Iris sphincter pupillae muscles, and Iris dilator pupillae muscles present in iris.
Q. 23: How many layers present in Iris ?
A) 3
B) 6
C) 4
D) 10
EXPLANATION: Number of 4 layers present in Iris = Anterior limiting layer, Iris stroma, Anterior epithelial layer, Posterior pigmented epithelial layer
Q. 24: Type of nerve supply in the Iris sphincter pupillae muscles ?
A) Sensory
B) Parasympathetic
C) Motor
D) Sympathetic
EXPLANATION: Iris sphincter pupillae muscles - Parasympathetic type - From oculomotor (CN Ⅲ): Originate from mid brain - Pupil contraction
Q. 25: Type of nerve supply in the Iris dilator pupillae muscles ?
A) Sensory
B) Parasympathetic
C) Motor
D) Sympathetic
EXPLANATION: Iris dilator pupillae muscles - Sympathetic type - From Hypothalamus - Pupil dilation
Q. 26: Limbus is the junction of ?
A) Ciliary body and choroid
B) Iris and cornea
C) Sclera and cornea
D) Retina and choroid
EXPLANATION: Limbus is the junction of sclera and cornea.
Q. 27: The anterior part of the ciliary body is called ?
A) Limbus
B) Pars plicata / corona ciliaris
C) Pars plans / orbicularis ciliaris
D) Ora serrate
EXPLANATION: The anterior part of the ciliary body is called Pars plicata / corona ciliaris.
Q. 28: The posterior part of the ciliary body is called ?
A) Limbus
B) Pars plicata / corona ciliaris
C) Pars plans / orbicularis ciliaris
D) Ora serrate
EXPLANATION: The anterior part of the ciliary body is called Pars plans / orbicularis ciliaris.
Q. 29: The part of the ciliary body that meets to choroid is called ?
A) Limbus
B) Pars plicata / corona ciliaris
C) Pars plans / orbicularis ciliaris
D) Ora serrate
EXPLANATION: The part of the ciliary body that meets to choroid is called Ora serrate.
Q. 30: How many layers present in ciliary body ?
A) 4
B) 5
C) 6
D) 7
EXPLANATION: Number of 5 layers present in ciliary body. (Supraciliary lamina, Stroma of ciliary body, Layer of pigmented epithelium, Layer of non-pigmented epithelium, Internal limiting membrane)
Q. 31: Which of the following structure that hold the lens to the attached from ciliary process ?
A) Cornea
B) Ciliary body
C) Iris
D) Zonules
EXPLANATION: Zonules hold the lens to the attached from ciliary process.
Q. 32: Which of the following properties is not of eye crystalline lens ?
A) Transparent
B) Biconvex
C) Avascular
D) Vascular
EXPLANATION: The eye crystalline lens are transparent, Biconvex and Avascular
Q. 33: Number of rods cell present in Retina approximately ?
A) 91 million
B) 60 million
C) 300
D) 4 million
EXPLANATION: Number of 91 million rods cells present in Retina.
Q. 34: Number of cones cell present in Retina approximately ?
A) 91 million
B) 60 million
C) 700
D) 4.5 million
EXPLANATION: Number of 4.5 million cones cells present in Retina.
Q. 35: Thickness of Retina is approximately ?
A) 2 mm
B) 0.2 mm
C) 0.02 mm
D) 3 mm
EXPLANATION: Thickness of Retina is approximately 0.2 mm. (In Male = 248.7 µm, In Female = 249.2 µm)
Q. 36: Diameter of the Macula/Macula lutea/Yellow spot is approximately ?
A) 6 mm
B) 5.5 mm
C) 2 mm
D) 10 mm
EXPLANATION: Normal diameter of the Macula is approximately = 5.5 mm
Q. 37: Diameter of the Fovea/Fovea centralis is approximately ?
A) 6 mm
B) 1.5 mm
C) 20 mm
D) 10 mm
EXPLANATION: Diameter of the Fovea/Fovea centralis is approximately = 1.5 mm
Q. 38: Diameter of the Optic disc/Blind spot is approximately ?
A) 6 mm
B) 1.5 mm
C) 20 mm
D) 10 mm
EXPLANATION: Diameter of the Optic disc/Blind spot is approximately = 1.5 mm
Q. 39: How many layers present in Retina ?
A) 3
B) 6
C) 4
D) 10
EXPLANATION: Number of 10 layers present in Retina.
Q. 40: Which of the following sructure through the optic nerve and the central retinal artery pass into the eyeball ?
A) Fovea
B) Optic disc/Blind spot
C) Macula
D) Cornea
EXPLANATION: The optic nerve and the central retinal artery pass through the optic disc into the eyeball.
Q. 41: On which part of the retina the image is formed the most clearly ?
A) Fovea of macula
B) Optic disc
C) Blind spot
D) Ora serrata
EXPLANATION: The sharpest image is formed at the fovea of the retina.
Q. 42: Through which of the following structures does the outflow of Aqueous humour from the eyeball occur ?
A) Ciliary process
B) Iris
C) Trabecular meshwork
D) Ora serrata
EXPLANATION: Aqueous humour exits the eyeball through the trabecular meshwork.
Q. 43: After the outflow of aqueous humor from the eyeball, the aqueous humor is finally released in ?
A) Lacrimal duct
B) Nose
C) Anterior ciliary vein
D) Vitreous humour
EXPLANATION: After the outflow of aqueous humor from the eyeball, the aqueous humor is finally released in Anterior ciliary vein
Q. 44: The postion of Lacrimal gland is ?
A) Superior-Lateral of the eyeball
B) Superior-medial of the eyeball
C) Inferior-Lateral of the eyeball
D) Inferior-medial of the eyeball
EXPLANATION: The postion of Lacrimal gland is Superior-Lateral of the eyeball
Q. 45: Normal production rate of tear/lacrimal from lacrimal glands ?
A) 2 µL per minute
B) 5 µL per minute
C) 2 mL per minute
D) 5 mL per minute
EXPLANATION: Normal basal tear production is 2 microliters per minute (10 ounces per day).
Q. 46: Which of the following is not a function of tear film ?
A) Protecting the eye from the environment
B) Lubricating the ocular surface
C) Maintaining a smooth surface for light refraction
D) Visual sensation
EXPLANATION: Visual sensation is the main function of Retina.
Q. 47: Locations of the meibomian glands ?
A) Cornea
B) Tarsal plate of eyelid
C) Eyebrow
D) Sclera
EXPLANATION: Locations of the meibomian glands = Tarsal plate of eyelid
Q. 48: What is secreted by meibomian glands ?
A) Lacrimal
B) Lipids
C) Tear
D) Hormones
EXPLANATION: Lipids secreted by meibomian glands.
Q. 49: Number of meibomian glands present in upper eyelids ?
A) 200
B) 20
C) 30
D) 300
EXPLANATION: Number of 30 meibomian glands present in upper eyelids.
Q. 50: Number of meibomian glands present in lower eyelids ?
A) 200
B) 20
C) 30
D) 300
EXPLANATION: Number of 20 meibomian glands present in lower eyelids.
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