Download Visual Fields OTM III Part 1: Questions and Answers and more Exams Nursing in PDF only on Docsity!
Visual Fields OTM III Part 1 Questions And Answers A+
What is a confrontational Visual field? - ANS-✔✔-screening
-done on EVERY patient including emergencies
What is perimetry testing? - ANS-✔✔-allows you to quantify and qualify diagnosis (severity)
What is a Goldman visual field used for? - ANS-✔✔-low vision
What is the correct order for the visual pathway? - ANS-✔✔-retina
-optic nerve
-optic chiasm
-optic tract
-LGN
-optic radiations
-V
The macula fibers run ______________ - ANS-✔✔-central
In the chiasm what happens to the nasal and temporal fibers? - ANS-✔✔-nasal: decussate
-temporal: stay temporal (not crossing)
After the chiasm where does the right VF (OD and OS) go? - ANS-✔✔-left hemisphere
After the chiasm where does the left VF (OD and OS) go? - ANS-✔✔-right hemisphere
What is V1 responsible for? - ANS-✔✔-cortical magnification
What happens in the binocular area of the VF if there is damage to one eye? - ANS-✔✔-the other eye will compensate
-patients with glaucoma will only be symptomatic in the periphery because that is where binocular vision overlap ends
Once you get past the chiasm all visual field defects will present themselves _______________ - ANS-✔ ✔-bilaterally
What does incongruous mean? Congruous? - ANS-✔✔-incongruous: asymmetrical
-congruous: symmetrical
What are the four reasons why we need to assess visual fields? - ANS-✔✔-to assess if a patients visual field meets the legal driving standards
-to screen for injury/disease/compressive lesions in the visual pathway
-monitoring for disease progression
-monitoring for disease stability (stroke patients are usually stable after initial loss so have to make sure loss doesnt progress)
What are the two diseases in particular we can monitor for progression through the visual field? - ANS- ✔✔-retinitis pigmentosa
-glaucoma
What boundary has the largest degree of VF? Smallest? - ANS-✔✔-largest: temporal
-smallest: nasal (probably having to do with the nose)
What does automated visual field testing assess? - ANS-✔✔-how bright a stimulus needs to be seen against the background
-the more sensitive (the retinal location) the dimmer the light is that can be perceived against the background
What happens in kinetic perimetry? - ANS-✔✔-stimulus is moved from non-seeing to seeing along a set meridian
How many degrees is the separation in kinetic perimetry from all directions? - ANS-✔✔-separation is 15 degrees
How are areas joined in kinetic perimetry - ANS-✔✔-areas of equal sensitivity joined by a line (Isopter)
-each corresponds to target size and intensity used
-target size and brightness static til isopter located
What type of visual field is done in the low vision service at NSU? - ANS-✔✔-Goldmann
