Certification Examination Practice

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

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

The tonometer measures the pressure inside the eye, critical for diagnosing glaucoma.

2. The Snellen chart is used to assess:

• Color vision
• Peripheral vision
• Visual acuity 1 / 4

• Depth perception

Visual acuity testing determines the sharpness or clarity of vision using standardized letters or symbols.

• Which cranial nerve controls pupillary constriction?
• Optic nerve (CN II)
• Trochlear nerve (CN IV)
• Oculomotor nerve (CN III)
• Abducens nerve (CN VI)

The oculomotor nerve innervates the sphincter pupillae muscle, controlling pupillary constriction.

• Which of the following is a risk factor for cataract formation?
• Young age
• Diabetes mellitus
• Short-sightedness
• Low blood pressure

Diabetes can accelerate lens protein denaturation, increasing cataract risk.

5. Fundus photography is primarily used to examine:

• Cornea
• Lens
• Retina
• Eyelid 2 / 4

Fundus photography captures detailed images of the retina to assess for pathology such as diabetic retinopathy or macular degeneration.

• Which eye drop is used to dilate the pupil for examination?
• Pilocarpine
• Timolol
• Tropicamide
• Latanoprost

Tropicamide is a mydriatic agent that temporarily dilates the pupil for fundoscopy or other examinations.

7. Amsler grid testing is used to detect:

• Glaucoma
• Cataracts
• Macular degeneration
• Strabismus

The Amsler grid helps detect central visual field defects associated with macular degeneration.

• Which technique is used to measure the curvature of the cornea?
• Pachymetry
• Tonometry
• Keratometry
• Retinoscopy

Keratometry measures the corneal curvature, important for fitting contact lenses and refractive assessments. 3 / 4

9. In fluorescein angiography, fluorescein dye is injected to visualize:

• Corneal surface
• Optic nerve head
• Retinal blood vessels
• Lens transparency

Fluorescein angiography highlights retinal and choroidal circulation for diagnosing vascular abnormalities.

10. The most common cause of bacterial conjunctivitis in adults is:

• Streptococcus pneumoniae
• Staphylococcus aureus
• Pseudomonas aeruginosa
• Haemophilus influenzae

Staphylococcus aureus is a common pathogen causing bacterial conjunctivitis in adults.

• Which type of lens is used to correct myopia?
• Convex lens
• Concave lens
• Cylindrical lens
• Bifocal lens

Concave lenses diverge light rays to correct nearsightedness.

• What is the main purpose of an A-scan ultrasonography in

ophthalmology?

• Evaluate corneal thickness
• / 4