Nursing NCBORN-CRNO Questions & Answers

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NCBORN Certification for Registered Nurses of Opthalmology

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Question: 686

Which type of laser is commonly used in ophthalmology for various therapeutic procedures?

YAG laser
Diode laser

rgon/Green laser wer: D
anation: The Argon/Green laser is commonly used in ophthalmology us therapeutic procedures. It emits a green-colored laser beam that ca tively absorbed by different ocular tissues, allowing for precise treatm rgon/Green laser is frequently used in the treatment of retinal condit as diabetic retinopathy and retinal tears, as well as in certain glaucom edures.

stion: 687
ch of the following charts is commonly used to assess visual acuity? inhole.
eger Near. nellen.
Excimer laser
A

proc Que Whi

P
Ja
S
Hand/Fingers.

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: 688

aser. onometry. rgon/Green. AG.

anation: Tonometry is a procedure commonly used to measure intraoc ure (IOP). It is an important test in the evaluation and management of coma. There are various methods of tonometry, including applanation metry, non-contact tonometry, and indentation tonometry. These meth ve measuring the resistance of the cornea to determine the pressure in ye. Therefore, the correct answer is D) Tonometry.

stion: 689

ch of the following procedures is used to measure the pressure inside t

Which type of procedure is commonly used to measure intraocular pressure?

L
T
A
Y

Que

Angiography
Ultrasound
Direct ophthalmoscopy
Tonometry

stion: 690

ch of the following procedures is commonly used for evaluating the sh urvature of the cornea?

pecular Microscopy. xophthalmometry. orneal Topography.

anation: Corneal topography is a procedure commonly used for evalu hape and curvature of the cornea. It provides detailed mapping of the eal surface, allowing for the assessment of irregularities, astigmatism,

corneal abnormalities. Corneal topography is particularly useful in th perative evaluation of patients undergoing refractive surgeries such as

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.

Que

G
S
E
C

LASIK. Therefore, the correct answer is C) Corneal Topography.

Question: 691

Which type of procedure is commonly used for the measurement of corneal thickness?

Pachymetry.
Keratometry.
Corneal Topography.
Specular Microscopy.

anation: Pachymetry is a procedure commonly used for the measurem rneal thickness. It involves the use of a specialized instrument called ymeter to measure the thickness of the cornea. Corneal thickness is an rtant parameter in the evaluation and management of various eye itions, including glaucoma and corneal diseases. Therefore, the correc er is B) Pachymetry.

stion: 692

ch procedure is commonly used to assess the anterior segment of the e pecular Microscopy.

orneal Topography. xophthalmometry.

Que

S
G
C
E

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.

Which procedure is used to examine the angle between the cornea and the iris?

Exophthalmometry
Specular microscopy
Ultrasound

wer: D

anation: Gonioscopy is the procedure used to examine the angle betw ornea and the iris. It involves the use of a specialized contact lens call olens, which is placed on thesurface of the eye to visualize and assess age angle. Gonioscopy is crucial in evaluating and managing conditio as glaucoma, as it provides important information about the angle tures and helps determine the appropriate treatment approach.

stion: 694
ch type of procedure involves the removal of a cloudy lens from the e laucoma procedures
ataract extractions eratoplasties
etinal-vitreal procedures
Gonioscopy Ans

Que

G
C
K
R

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

Question: 695

Which diagnostic test is commonly used to assess tear production and function?

Exophthalmometry
pecular microscopy ear function test

wer: D

anation: Tear function tests are commonly used to assess tear producti unction. These tests can evaluate the quantity and quality of tears and nose conditions such as dry eye syndrome. Examples of tear function t de the Schirmer test, which measures tear production, and the tear bre
TBUT) test, which assesses tear stability.

stion: 697

ch of the following techniques is commonly used to assess visual acuit nts?

nellen chart eger Near chart
Slit lamp examination
S
T

Que

S
Ja
All of the above
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.

ch diagnostic test is used to evaluate the function of the macula in pati msler Grid

ereopsis test isual field test

pecular microscopy

anation: The Amsler Grid is a diagnostic tool used to evaluate the fun macula, which is the central part of the retina responsible for detaile

n. It consists of a grid of horizontal and vertical lines with a central ion point. The patient is asked to look at the grid and report any rtions, missing areas, or abnormalities in the grid's pattern. Changes i arance of the grid can indicate macular conditions such as macular neration or macular edema.

A
St
V
S

Question: 699

Which type of procedure is commonly used for the removal of foreign bodies from the eye?

Intraocular Surgery.
Cataract Extractions.
Glaucoma Surgery.
Foreign Body Removal. Answer: D

gn objects that may have entered the eye, such as metal fragments, cles, or debris. Prompt removal of foreign bodies is crucial to prevent er damage and potential infection. Therefore, the correct answer is D) ign Body Removal.

stion: 700

ch diagnostic test is used to evaluate macular function? isual Field.

ereopsis. msler Grid.

uscle Function.

Explanation: Foreign body removal is a procedure commonly used for the removal of foreign bodies from the eye. It involves the careful extraction of forei

parti furth Fore

Que

V
St
A
M

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: 701

Which type of procedure is commonly used to assess tear function?

Angiography.
Tonometry.
Schirmer Test.

wer: C

anation: The Schirmer test is a commonly used procedure to assess te ion. It measures the quantity of tears produced by the lacrimal glands. est, a small strip of filter paper is placed in the lower eyelid, and the t llowed to wick up the paper. The length of wetting on the paper is ured after a specified time. The Schirmer test helps evaluate tear uction and diagnose conditions such as dry eye syndrome. Therefore, ct answer is D) Schirmer Test.

stion: 702
ch diagnostic test is commonly used to assess the curvature of the cor achymetry
eratometry onioscopy
Slit Lamp Examination. Ans

Que

P
K
G
Exophthalmometry

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: 703

phthalmic Photography. ltrasound.

pecular Microscopy. unduscopy.

anation: Funduscopy, also known as direct ophthalmoscopy, is a proc monly used for direct visualization of the retina. It involves the use of held instrument called an ophthalmoscope, which allows the healthcar ider to examine the internal structures of the eye, including the retina, and blood vessels. Funduscopy is important in the assessment and agement of various retinal conditions and diseases. Therefore, the corr er is C) Funduscopy.

Which of the following procedures is commonly used for direct visualization of the retina?

O
U
S
F

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