Examination Practice Questions And

Illinois Ophthalmic Technician Certification Examination Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which instrument is used to measure intraocular pressure?
• Slit lamp
• Ophthalmoscope
• Tonometer
• Retinoscope

Rationale: A tonometer is specifically designed to measure

intraocular pressure, which is essential in diagnosing and managing glaucoma.

• What is the normal range for intraocular pressure in adults?
• 5–12 mmHg
• 10–20 mmHg 1 / 4

• 12–22 mmHg
• 20–30 mmHg

Rationale: Normal intraocular pressure typically ranges from 12 to 22

mmHg. Values above this may indicate glaucoma.

• Which part of the eye is responsible for the majority of focusing light

onto the retina?

• Cornea
• Lens
• Retina
• Cornea and lens

Rationale: Both the cornea and lens refract light to focus images on

the retina, with the cornea providing most of the focusing power.

4. A patient has difficulty seeing objects close up. This condition is called:

• Myopia
• Hyperopia
• Presbyopia
• Astigmatism

Rationale: Presbyopia is the age-related difficulty in near vision due

to loss of lens elasticity.

• Which diagnostic test evaluates the visual field?
• Fundus photography
• Perimetry
• Optical coherence tomography (OCT) 2 / 4

• Slit-lamp examination

Rationale: Perimetry maps a patient’s visual field to detect deficits

from glaucoma or neurological conditions.

• Which eye condition is characterized by clouding of the lens?
• Glaucoma
• Cataract
• Macular degeneration
• Retinopathy

Rationale: Cataracts involve opacification of the lens, leading to

blurred vision.

7. The instrument used to examine the retina and optic nerve is a:

• Tonometer
• Ophthalmoscope
• Retinoscope
• Slit lamp

Rationale: An ophthalmoscope allows direct visualization of the

retina and optic nerve head.

• A patient is instructed to look through a phoropter during an eye

exam. This is to determine:

• Intraocular pressure
• Refractive error
• Visual field
• Retinal health 3 / 4

Rationale: The phoropter is used to measure refractive errors and

determine prescription lenses.

• Which cranial nerve controls most of the eye’s movements?
• II

B. III

• IV
• III (oculomotor nerve)

Rationale: The oculomotor nerve (cranial nerve III) controls most

extraocular muscles.

• What is the purpose of fluorescein staining?
• Measure intraocular pressure
• Check visual acuity
• Detect corneal abrasions or ulcers
• Examine the retina

Rationale: Fluorescein dye highlights corneal defects when viewed

under blue light.

11. A patient with blurred central vision may have:

• Cataract
• Macular degeneration
• Glaucoma
• Conjunctivitis

Rationale: Macular degeneration affects the central retina, causing

central vision loss.

• / 4