Podcast
Questions and Answers
When examining the eye, if the patients eyelid margins approximate completely, what does this assessment finding indicate?
When examining the eye, if the patients eyelid margins approximate completely, what does this assessment finding indicate?
- May indicate a problem with extraocular muscles.
- It is expected. (correct)
- May result in problems with tearing.
- Indicates increased intraocular pressure.
During ocular examinations, how is the movement of the extraocular muscles stimulated?
During ocular examinations, how is the movement of the extraocular muscles stimulated?
- Impaired in a patient with cataracts.
- Stimulated by cranial nerves (CNs) I and II.
- Stimulated by CNs III, IV, and VI. (correct)
- Decreased in the older adult.
When performing an external eye examination, which statement regarding the outer layer of the eye is true?
When performing an external eye examination, which statement regarding the outer layer of the eye is true?
- The outer layer of the eye is very sensitive to touch. (correct)
- The trigeminal nerve (CN V) and the trochlear nerve (CN IV) are stimulated when the outer surface is touched.
- The outer layer of the eye is darkly pigmented to prevent light from reflecting internally.
- The outer layer of the eye is insensitive to external stimuli.
What is the function of the palpebral fissure in the eye?
What is the function of the palpebral fissure in the eye?
What is responsible for decreased near vision abilities?
What is responsible for decreased near vision abilities?
Which layer of the eye has pigmentation to prevent internal light reflection?
Which layer of the eye has pigmentation to prevent internal light reflection?
What causes pupil dilation and eyelid elevation?
What causes pupil dilation and eyelid elevation?
Which nerve is stimulated when the outer eye surface is stimulated?
Which nerve is stimulated when the outer eye surface is stimulated?
What determines intraocular pressure?
What determines intraocular pressure?
What refers to pupillary constriction when looking at a near object?
What refers to pupillary constriction when looking at a near object?
What is the normal constriction of pupils when bright light shines on the retina?
What is the normal constriction of pupils when bright light shines on the retina?
What does the retina change light waves into?
What does the retina change light waves into?
What layer of the eye is touch-sensitive?
What layer of the eye is touch-sensitive?
What is responsible for the image formed on the retina being upside down and reversed from its actual appearance?
What is responsible for the image formed on the retina being upside down and reversed from its actual appearance?
At what age should infants establish binocularity and fixate simultaneously on a single image with both eyes?
At what age should infants establish binocularity and fixate simultaneously on a single image with both eyes?
What is the outer layer of the eye made up of?
What is the outer layer of the eye made up of?
When assessing the lacrimal apparatus, what are the normal findings?
When assessing the lacrimal apparatus, what are the normal findings?
How should the nurse assess the pupillary light reflex?
How should the nurse assess the pupillary light reflex?
What is a normal reflection when using an ophthalmoscope to examine a patient's pupils?
What is a normal reflection when using an ophthalmoscope to examine a patient's pupils?
At what age can an infant fixate on an object?
At what age can an infant fixate on an object?
When should an infant be able to fixate and follow a bright light or toy?
When should an infant be able to fixate and follow a bright light or toy?
When is color vision tested in boys using the Ishihara test?
When is color vision tested in boys using the Ishihara test?
How is testing for strabismus done?
How is testing for strabismus done?
What should the nurse consider when examining an 80-year-old patient?
What should the nurse consider when examining an 80-year-old patient?
How is normal findings for the accommodation response described?
How is normal findings for the accommodation response described?
How is ptosis observed?
How is ptosis observed?
What color should the optic disc be when examining a patient's retina with an ophthalmoscope?
What color should the optic disc be when examining a patient's retina with an ophthalmoscope?
At what age can an infant fixate on an object?
At what age can an infant fixate on an object?
What may periorbital edema indicate?
What may periorbital edema indicate?
What does assessing for shadows when light is directed across the iris indicate?
What does assessing for shadows when light is directed across the iris indicate?
What is anisocoria characterized by?
What is anisocoria characterized by?
What may indicate signs of retinal detachment?
What may indicate signs of retinal detachment?
What does a painful, red, and swollen pustule at the lid margin indicate?
What does a painful, red, and swollen pustule at the lid margin indicate?
What does loss of central vision but normal peripheral vision suggest?
What does loss of central vision but normal peripheral vision suggest?
What does corneal abrasion cause in reflected light?
What does corneal abrasion cause in reflected light?
What should pupillary constriction be in older adults?
What should pupillary constriction be in older adults?
Is periorbital edema associated with blepharitis?
Is periorbital edema associated with blepharitis?
What may unequal pupil size indicate?
What may unequal pupil size indicate?
What may the presence of shadows in the anterior chamber be a sign of?
What may the presence of shadows in the anterior chamber be a sign of?
What is the term for pupils of unequal size?
What is the term for pupils of unequal size?
What is the correct interpretation of 20/30 vision on the Snellen chart?
What is the correct interpretation of 20/30 vision on the Snellen chart?
What does a visual acuity of 20/80 in each eye indicate?
What does a visual acuity of 20/80 in each eye indicate?
What does the reflection of light on the corneas indicate?
What does the reflection of light on the corneas indicate?
When is the Snellen alphabet chart used to assess visual acuity?
When is the Snellen alphabet chart used to assess visual acuity?
What does the top number in a visual acuity measurement indicate?
What does the top number in a visual acuity measurement indicate?
What does a diagnostic positions test assess?
What does a diagnostic positions test assess?
What is the expected finding during an assessment of dark-skinned people's sclera?
What is the expected finding during an assessment of dark-skinned people's sclera?
How should the nurse check for ptosis of one eye?
How should the nurse check for ptosis of one eye?
When may the acute onset of floaters occur?
When may the acute onset of floaters occur?
What is the denominator in a visual acuity measurement?
What is the denominator in a visual acuity measurement?
What should the nurse do if a patient is unable to read the largest letters on the Snellen chart?
What should the nurse do if a patient is unable to read the largest letters on the Snellen chart?
What should the nurse use to assess the visual acuity of a 16-year-old patient?
What should the nurse use to assess the visual acuity of a 16-year-old patient?
What is the correct definition of 20/30 vision on the Snellen chart?
What is the correct definition of 20/30 vision on the Snellen chart?
What does the top number in a visual acuity measurement indicate?
What does the top number in a visual acuity measurement indicate?
What does a visual acuity of 20/80 in each eye indicate?
What does a visual acuity of 20/80 in each eye indicate?
What is the purpose of shortening the distance on the Snellen chart if a patient is unable to read the largest letters?
What is the purpose of shortening the distance on the Snellen chart if a patient is unable to read the largest letters?
What is the significance of asymmetric reflection of light on the corneas?
What is the significance of asymmetric reflection of light on the corneas?
What is a normal finding for the diagnostic positions test?
What is a normal finding for the diagnostic positions test?
What may be observed in the sclera of dark-skinned people as an expected finding during an assessment?
What may be observed in the sclera of dark-skinned people as an expected finding during an assessment?
How should the nurse check for ptosis of one eye?
How should the nurse check for ptosis of one eye?
What might the acute onset of floaters indicate?
What might the acute onset of floaters indicate?
What is the Snellen chart used for?
What is the Snellen chart used for?
What does the denominator in a visual acuity measurement indicate?
What does the denominator in a visual acuity measurement indicate?
When should the nurse use the Snellen chart to assess the visual acuity of a patient?
When should the nurse use the Snellen chart to assess the visual acuity of a patient?
Study Notes
Eye Assessment and Vision Testing
- A 52-year-old patient reports occasional floaters or spots in his eyes, which are usually insignificant and caused by condensed vitreous fibers.
- The nurse should use the Snellen chart, positioned 20 feet away, to assess the visual acuity of a 16-year-old patient.
- A patient with 20/30 vision on the Snellen chart can read at 20 feet what a person with normal vision can read at 30 feet.
- If a patient is unable to read even the largest letters on the Snellen chart, the nurse should shorten the distance until the letters are seen and record that distance.
- A visual acuity of 20/80 in each eye indicates poor vision.
- The reflection of light on the corneas should be symmetric, with asymmetry requiring further assessment.
- Normal findings for the diagnostic positions test include parallel movement of both eyes.
- In dark-skinned people, small brown macules may be observed in the sclera as an expected finding during an assessment.
- The nurse should check for ptosis of one eye by observing the distance between the palpebral fissures.
- Floaters or spots moving in front of the eyes can be normal, but the acute onset of floaters may occur with retinal detachment.
- The Snellen alphabet chart is the most commonly used and most accurate measure of visual acuity.
- The top number in a visual acuity measurement indicates the distance the person is standing from the chart, and the denominator gives the distance at which a normal eye can see.
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Description
Test your knowledge of eye assessment and vision testing with this quiz covering topics such as visual acuity, Snellen chart, diagnostic positions test, and normal findings during eye assessments.
