CERTIFIED OPHTHALMIC TECHNICIAN
EXAMINATION QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
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1. The part of the eye responsible for focusing light on the retina is the:
A. Sclera
B. Cornea
C. Optic nerve
D. Vitreous humor
The cornea provides most of the eye’s focusing power.
2. A Snellen chart is used to measure:
A. Color vision
B. Retinal pressure
C. Visual acuity
D. Intraocular pressure
The Snellen chart assesses distance visual acuity.
3. The normal range for intraocular pressure (IOP) is:
A. 5–10 mmHg
B. 11–21 mmHg
C. 10–21 mmHg
D. 22–30 mmHg
Normal IOP typically falls between 10–21 mmHg.
4. The structure that connects the ciliary body to the lens is the:
A. Iris
, B. Choroid
C. Zonules
D. Trabecular meshwork
Zonules hold and adjust the lens for accommodation.
5. Which instrument is used to examine the anterior chamber angle?
A. Tonometer
B. Fundus camera
C. Gonioscope
D. Ophthalmoscope
Gonioscopy visualizes the drainage angle of the anterior chamber.
6. The test that evaluates the field of vision is:
A. Pupillary reflex
B. Slit lamp exam
C. Perimetry
D. Tonometry
Perimetry assesses visual fields.
7. Amblyopia is best described as:
A. Cataract formation
B. Reduced vision not correctable by glasses
C. Retinal detachment
D. Elevated intraocular pressure
Amblyopia is decreased vision due to abnormal visual development.
8. The crystalline lens is located:
A. In front of the cornea
B. Behind the retina
C. Behind the iris
D. In the vitreous cavity
The lens lies posterior to the iris.
9. The term phacoemulsification refers to:
A. Glaucoma surgery
, B. Cataract removal technique
C. Retinal detachment repair
D. Corneal transplant
Phacoemulsification uses ultrasound to break up a cataract.
10.The layer of the eye that contains blood vessels is the:
A. Retina
B. Sclera
C. Choroid
D. Lens
The choroid supplies blood to outer retinal layers.
11.The visual pathway ends at the:
A. Optic nerve
B. Visual cortex
C. Retina
D. Ciliary body
Visual signals are interpreted in the visual cortex of the brain.
12.The abnormal curvature of the cornea causing distorted vision is:
A. Strabismus
B. Presbyopia
C. Astigmatism
D. Myopia
Astigmatism results from irregular corneal shape.
13.The primary function of tears is to:
A. Produce vitamins
B. Lubricate and protect the eye
C. Change pupil size
D. Focus light
Tears keep the ocular surface moist and defend against infection.
14.The tool used to measure corneal thickness is a:
A. Slit lamp
EXAMINATION QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
1. The part of the eye responsible for focusing light on the retina is the:
A. Sclera
B. Cornea
C. Optic nerve
D. Vitreous humor
The cornea provides most of the eye’s focusing power.
2. A Snellen chart is used to measure:
A. Color vision
B. Retinal pressure
C. Visual acuity
D. Intraocular pressure
The Snellen chart assesses distance visual acuity.
3. The normal range for intraocular pressure (IOP) is:
A. 5–10 mmHg
B. 11–21 mmHg
C. 10–21 mmHg
D. 22–30 mmHg
Normal IOP typically falls between 10–21 mmHg.
4. The structure that connects the ciliary body to the lens is the:
A. Iris
, B. Choroid
C. Zonules
D. Trabecular meshwork
Zonules hold and adjust the lens for accommodation.
5. Which instrument is used to examine the anterior chamber angle?
A. Tonometer
B. Fundus camera
C. Gonioscope
D. Ophthalmoscope
Gonioscopy visualizes the drainage angle of the anterior chamber.
6. The test that evaluates the field of vision is:
A. Pupillary reflex
B. Slit lamp exam
C. Perimetry
D. Tonometry
Perimetry assesses visual fields.
7. Amblyopia is best described as:
A. Cataract formation
B. Reduced vision not correctable by glasses
C. Retinal detachment
D. Elevated intraocular pressure
Amblyopia is decreased vision due to abnormal visual development.
8. The crystalline lens is located:
A. In front of the cornea
B. Behind the retina
C. Behind the iris
D. In the vitreous cavity
The lens lies posterior to the iris.
9. The term phacoemulsification refers to:
A. Glaucoma surgery
, B. Cataract removal technique
C. Retinal detachment repair
D. Corneal transplant
Phacoemulsification uses ultrasound to break up a cataract.
10.The layer of the eye that contains blood vessels is the:
A. Retina
B. Sclera
C. Choroid
D. Lens
The choroid supplies blood to outer retinal layers.
11.The visual pathway ends at the:
A. Optic nerve
B. Visual cortex
C. Retina
D. Ciliary body
Visual signals are interpreted in the visual cortex of the brain.
12.The abnormal curvature of the cornea causing distorted vision is:
A. Strabismus
B. Presbyopia
C. Astigmatism
D. Myopia
Astigmatism results from irregular corneal shape.
13.The primary function of tears is to:
A. Produce vitamins
B. Lubricate and protect the eye
C. Change pupil size
D. Focus light
Tears keep the ocular surface moist and defend against infection.
14.The tool used to measure corneal thickness is a:
A. Slit lamp
