NCBORN-CRNO : NCBORN Certification for Registered Nurses of Opthalmology Exam

Question: 1
Which type of laser is commonly used in ophthalmology for various therapeutic procedures?
A. YAG laser
B. Diode laser
C. Excimer laser
D. Argon/Green laser
Answer: D
Explanation: The Argon/Green laser is commonly used in ophthalmology for various therapeutic procedures. It emits a green-colored laser beam that can be selectively absorbed by different ocular tissues, allowing for precise treatment. The Argon/Green laser is frequently used in the treatment of retinal conditions, such as diabetic retinopathy and retinal tears, as well as in certain glaucoma procedures.
Question: 2
Which of the following charts is commonly used to assess visual acuity?
A. Pinhole.
B. Jaeger Near.
C. Snellen.
D. Hand/Fingers.
Answer: C
Explanation: The Snellen chart is a commonly used tool for assessing visual acuity. It consists of rows of letters or symbols in various sizes, with each row representing a different level of visual acuity. The patient is asked to read the smallest row of letters or symbols that they can see clearly. The Snellen chart is particularly used for assessing distance visual acuity. Therefore, the correct answer is A) Snellen.
Question: 3
Which type of procedure is commonly used to measure intraocular pressure?
A. Laser.
B. Tonometry.
C. Argon/Green.
D. YAG.
Answer: B
Explanation: Tonometry is a procedure commonly used to measure intraocular pressure (IOP). It is an important test in the evaluation and management of glaucoma. There are various methods of tonometry, including applanation tonometry, non-contact tonometry, and indentation tonometry. These methods involve measuring the resistance of the cornea to determine the pressure inside the eye. Therefore, the correct answer is D) Tonometry.
Question: 4
Which of the following procedures is used to measure the pressure inside the eye?
A. Angiography
B. Ultrasound
C. Direct ophthalmoscopy
D. Tonometry Answer: D
Explanation: Tonometry is the procedure used to measure the pressure inside the eye, known as intraocular pressure. It is an important test for the evaluation and management of conditions such as glaucoma, where increased intraocular pressure can lead to optic nerve damage. Tonometry can be performed using various techniques, including applanation tonometry, non-contact tonometry, and handheld tonometers.
Question: 5
Which of the following procedures is commonly used for evaluating the shape and curvature of the cornea?
A. Gonioscopy.
B. Specular Microscopy.
C. Exophthalmometry.
D. Corneal Topography.
Answer: D
Explanation: Corneal topography is a procedure commonly used for evaluating theshape and curvature of the cornea. It provides detailed mapping of the corneal surface, allowing for the assessment of irregularities, astigmatism, and other corneal abnormalities. Corneal topography is particularly useful in the preoperative evaluation of patients undergoing refractive surgeries such as LASIK. Therefore, the correct answer is C) Corneal Topography.
Question: 6
Which type of procedure is commonly used for the measurement of corneal thickness?
A. Pachymetry.
B. Keratometry.
C. Corneal Topography.
D. Specular Microscopy.
Answer: A
Explanation: Pachymetry is a procedure commonly used for the measurement of corneal thickness. It involves the use of a specialized instrument called a pachymeter to measure the thickness of the cornea. Corneal thickness is an important parameter in the evaluation and management of various eye conditions, including glaucoma and corneal diseases. Therefore, the correct answer is B) Pachymetry.
Question: 7
Which procedure is commonly used to assess the anterior segment of the eye?
A. Specular Microscopy.
B. Gonioscopy.
C. Corneal Topography.
D. Exophthalmometry.
Answer: B
Explanation: Gonioscopy is a procedure commonly used to assess the anterior segment of the eye, specifically the drainage angle. It involves the use of a specialized contact lens called a gonioscope, which is placed on the eye to visualize the angle between the cornea and the iris. Gonioscopy is particularly important in the evaluation and management of glaucoma. Therefore, the correct answer is D) Gonioscopy.
Question: 8
Which procedure is used to examine the angle between the cornea and the iris?
A. Exophthalmometry
B. Specular microscopy
C. Ultrasound
D. Gonioscopy
Answer: D
Explanation: Gonioscopy is the procedure used to examine the angle between the cornea and the iris. It involves the use of a specialized contact lens called a goniolens, which is placed on thesurface of the eye to visualize and assess the drainage angle. Gonioscopy is crucial in evaluating and managing conditions such as glaucoma, as it provides important information about the angle structures and helps determine the appropriate treatment approach.
Question: 9
Which type of procedure involves the removal of a cloudy lens from the eye?
A. Glaucoma procedures
B. Cataract extractions
C. Keratoplasties
D. Retinal-vitreal procedures
Answer: B
Explanation: Cataract extractions involve the surgical removal of a cloudy lens from the eye. Cataracts occur when the natural lens of the eye becomes cloudy, leading to vision impairment. The procedure aims to replace the cloudy lens
with an artificial intraocular lens (IOL) to restore clear vision.
Question: 10
Which diagnostic test is commonly used to assess tear production and function?
A. Exophthalmometry
B. Slit lamp examination
C. Specular microscopy
D. Tear function test
Answer: D
Explanation: Tear function tests are commonly used to assess tear production and function. These tests can evaluate the quantity and quality of tears and help diagnose conditions such as dry eye syndrome. Examples of tear function tests include the Schirmer test, which measures tear production, and the tear breakup time (TBUT) test, which assesses tear stability.
Question: 11
Which of the following techniques is commonly used to assess visual acuity in patients?
A. Snellen chart
B. Jaeger Near chart
C. All of the above
D. Pinhole test
Answer: C
Explanation: Visual acuity, which measures the sharpness and clarity of vision, can be assessed using various techniques. The Snellen chart is a commonly used method that involves the patient reading letters or symbols from a chart placed at a specific distance. The Jaeger Near chart is used to assess near vision, particularly for reading and close-up tasks. The pinhole test involves the patient looking through a small hole, which can improve visual acuity by reducing the effects of refractive errors. Therefore, all of the options (A, B, and C) are correct methods for assessing visual acuity.
Question: 12
Which diagnostic test is used to evaluate the function of the macula in patients?
A. Amsler Grid
B. Stereopsis test
C. Visual field test
D. Specular microscopy
Answer: A
Explanation: The Amsler Grid is a diagnostic tool used to evaluate the function of the macula, which is the central part of the retina responsible for detailed vision. It consists of a grid of horizontal and vertical lines with a central fixation point. The patient is asked to look at the grid and report any distortions, missing areas, or abnormalities in the grid's pattern. Changes in the appearance of the grid can indicate macular conditions such as macular degeneration or macular edema.
Question: 13
Which type of procedure is commonly used for the removal of foreign bodies from the eye?
A. Intraocular Surgery.
B. Cataract Extractions.
C. Glaucoma Surgery.
D. Foreign Body Removal.
Answer: D
Explanation: Foreign body removal is a procedure commonly used for the removal of foreign bodies from the eye. It involves the careful extraction of foreign objects that may have entered the eye, such as metal fragments, particles, or debris. Prompt removal of foreign bodies is crucial to prevent further damage and potential infection. Therefore, the correct answer is D) Foreign Body Removal.
Question: 14
Which diagnostic test is used to evaluate macular function?
A. Visual Field.
B. Stereopsis.
C. Amsler Grid.
D. Muscle Function.
Answer: C
Explanation: The Amsler Grid is a diagnostic tool used to evaluate macular function. It consists of a grid of intersecting lines with a central fixation point. Patients with macular disorders may experience distortions or gaps in the grid when viewing it. The Amsler Grid is particularly useful in assessing central visual field defects and detecting early signs of macular degeneration. Therefore, the correct answer is A) Amsler Grid.
Question: 15
Which type of procedure is commonly used to assess tear function?
A. Angiography.
B. Tonometry.
C. Schirmer Test.
D. Slit Lamp Examination.
Answer: C
Explanation: The Schirmer test is a commonly used procedure to assess tear function. It measures the quantity of tears produced by the lacrimal glands. In this test, a small strip of filter paper is placed in the lower eyelid, and the tears are allowed to wick up the paper. The length of wetting on the paper is measured after a specified time. The Schirmer test helps evaluate tear production and diagnose conditions such as dry eye syndrome. Therefore, the correct answer is D) Schirmer Test.
Question: 16
Which diagnostic test is commonly used to assess the curvature of the cornea?
A. Pachymetry
B. Keratometry
C. Gonioscopy
D. Exophthalmometry
Answer: B
Explanation: Keratometry is a diagnostic test used to assess the curvature of the cornea, which is the clear front surface of the eye. It measures the corneal curvature by focusing on the reflection of light from the cornea. Keratometry is commonly used to evaluate corneal astigmatism and to aid in the fitting of contact lenses or the planning of refractive surgeries.
Question: 17
Which of the following procedures is commonly used for direct visualization of the retina?
A. Ophthalmic Photography.
B. Ultrasound.
C. Specular Microscopy.
D. Funduscopy.
Answer: D
Explanation: Funduscopy, also known as direct ophthalmoscopy, is a procedure commonly used for direct visualization of the retina. It involves the use of a handheld instrument called an ophthalmoscope, which allows the healthcare provider to examine the internal structures of the eye, including the retina, optic disc, and blood vessels. Funduscopy is important in the assessment and management of various retinal conditions and diseases. Therefore, the correct answer is C) Funduscopy.

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