OPT 210 BIO EXAM WITH CORRECT ANSWERS 100% VERIFIED!!
What is the BIO used for?
allows for the use of both eyes to view the fundus yielding stereopsis (light is reflected
off the retina and converged by condensing lens held in front of the patient's eye
What type of image is produced by the BIO instrument?
-real
-aerial
-inverted
-reversed
What is the field of view for BIO?
>40°, 8DD
What is required for good peripheral views?
maximum pupil dilation (we want to use the largest aperture for this)
When would we use a white filter for the BIO?
most of the time (there is no color distortion and there is a good color rendition index)
When would we use a red free filter for BIO?
-to enhance blood vessels and hemorrhages
-differentiate between retinal and choroidal lesions
When would we use a cobalt blue filter for BIO?
, -enhance auto fluorescent features or used with injected or oral sodium fluorescein
-enhance retinal nerve fiber layer
When would we use the yellow filter for BIO?
-increase patient comfort
-blocks blue light and UV rays (but it can alter retinal color)
When would we use the diffuse filter for BIO?
-decrease light intensity
-replaced yellow lenses
When would we use the small aperture for BIO?
for an undilated pupil
When would we use the intermediate aperture for BIO?
for patient's who are light sensitive
When would we use the large aperture for BIO?
on fully dilated pupils
What are the results of a decreased condensing lens power?
-increased magnification
-decreased field of view
-increased working distance
What is the focal length of the 20D condensing lens?
What is the BIO used for?
allows for the use of both eyes to view the fundus yielding stereopsis (light is reflected
off the retina and converged by condensing lens held in front of the patient's eye
What type of image is produced by the BIO instrument?
-real
-aerial
-inverted
-reversed
What is the field of view for BIO?
>40°, 8DD
What is required for good peripheral views?
maximum pupil dilation (we want to use the largest aperture for this)
When would we use a white filter for the BIO?
most of the time (there is no color distortion and there is a good color rendition index)
When would we use a red free filter for BIO?
-to enhance blood vessels and hemorrhages
-differentiate between retinal and choroidal lesions
When would we use a cobalt blue filter for BIO?
, -enhance auto fluorescent features or used with injected or oral sodium fluorescein
-enhance retinal nerve fiber layer
When would we use the yellow filter for BIO?
-increase patient comfort
-blocks blue light and UV rays (but it can alter retinal color)
When would we use the diffuse filter for BIO?
-decrease light intensity
-replaced yellow lenses
When would we use the small aperture for BIO?
for an undilated pupil
When would we use the intermediate aperture for BIO?
for patient's who are light sensitive
When would we use the large aperture for BIO?
on fully dilated pupils
What are the results of a decreased condensing lens power?
-increased magnification
-decreased field of view
-increased working distance
What is the focal length of the 20D condensing lens?
