COT Study Exam Questions And All
Correct Answers
When taking a fundus photo and you see a blue gray halo around the eye,
you should move the camera - Ans--closer
As flurescein dye circulates throughout the eye and sequential pictures are
taken,this is known as - Ans--Angiograms
For the slit lamp photography, in order for an image to be produced in each
ocular and in the camera, a is necessary. - Ans--Beam Splitter
The reticule in the slit lamp and fundus camera is to compensate for the
refractive error - Ans--photographer's
To Set the camera eyepiece, you should keep eye(s) in dim light or
darkness - Ans--both , open
What are the two types of fluorescence? - Ans--hyper fluorescence- an
increase in fluorescence or in the amount of dye, hypo-fluorescence- a
decrease in fluorescence
To eliminate crescent shaped and linear defects when aligning a patient,
you would move the camera in the direction - Ans--opposite
How many phases to a fluorescein angiogram? - Ans--Prearterial (
choroidal phase), arterial, arteriovenous , venous, recirculation, and late
Contraindications for retinal fluorescein angiography are - Ans--Pregnancy,
a previous histor of reaction, multiple allergies, and adverse reaction of
fluorescein dye
When taking a picture, what term is used to indicate how much of the picture
will come into sharp focus? - Ans--depth of field
,What pictures are generally taken using color film? - Ans--fundus photos-
macula,optic nerve, external photos and slit lamp photos
In order to achieve sharply focused photographs, the first step you should
do is set the - Ans--reticule
Slit lamp photography is used to document conditions affection the - Ans--
cornea, anterior chamber and lens
Specluar microscopy is a method of photographing and evaluating the -
Ans--Endothelial surface of the corneal
pictures of the posterior pole are obtained by what method? - Ans--fundus
photography
During fluorescein angiography, which two filters are used? - Ans--Barrier
and exciter filters
Injection of sodium fluorescein in the vein has an average arm-to-eye time
of - Ans--8-15 seconds
What is the name of the mechanical device that controls the duration of light
that strikes the film in the camera - Ans--shutter
A 35mm camera with a commonly used lens has a focal length of - Ans--
50mm
with all ophthalmic camera lenses , the higher the magnification ( focal
length) the narrower the - Ans--angle of tview
An F number refers to - Ans--F stop or lens aperture
film sensitivity to light is referred to as - Ans--film speed or ISO ( international
standards organization) number - the higher the number the more sensitive,
or "faster "the film .
what film is generally used for fluorescein angiograms - Ans--black and
white film- ISO400
, What is Rose Bengal used for - Ans--A red dye that stains nonviable
epithelial cells
Rose Bengal is used in making the diagnosis of what corneal condition? -
Ans--Keratoconjunctivitis Sicca
How do Fluorescein and Rose Bengal differ? - Ans--Fluorescein stains
living cells where as Rose Bengal stains NON-living cells
True or false- Eye drops penetrate the eye directly through the corneal into
the anterior chamber ? - Ans--True
What are some Clinical uses for Miotic agents? - Ans--Open angle
glaucoma, angle closure glaucoma, management of convergent
strabismus and management of accommodative insufficiency.
A wide fluorescein pattern on a Goldman applanation tonometry indicates
there is - Ans--to much fluorescein and tears
a wide fluorescein pattern will produce a pressure reading that will be much
than the actual pressure - Ans--higher
If there are too little tears or fluorsecein, the applanation pressure reading
may be too - Ans--low
If the prism is not aligned properly at the axis of the minus cylinder, in
incorrect IOP reading may be obtained if the cornea has of astigmatism or
more - Ans--three Diopters
To obtain an accurate reading when 3 Diopters of astigmatism or more is
present the prism axis in minus cylinder is set at a - Ans--43 degree mark or
red line
Uncorrected induced astigmatism will cause blurring in - Ans--one meridian
using the correction device in the fundus camera is used to compensate for -
Ans--high corneal astigmatism or induced astigmatism.
Correct Answers
When taking a fundus photo and you see a blue gray halo around the eye,
you should move the camera - Ans--closer
As flurescein dye circulates throughout the eye and sequential pictures are
taken,this is known as - Ans--Angiograms
For the slit lamp photography, in order for an image to be produced in each
ocular and in the camera, a is necessary. - Ans--Beam Splitter
The reticule in the slit lamp and fundus camera is to compensate for the
refractive error - Ans--photographer's
To Set the camera eyepiece, you should keep eye(s) in dim light or
darkness - Ans--both , open
What are the two types of fluorescence? - Ans--hyper fluorescence- an
increase in fluorescence or in the amount of dye, hypo-fluorescence- a
decrease in fluorescence
To eliminate crescent shaped and linear defects when aligning a patient,
you would move the camera in the direction - Ans--opposite
How many phases to a fluorescein angiogram? - Ans--Prearterial (
choroidal phase), arterial, arteriovenous , venous, recirculation, and late
Contraindications for retinal fluorescein angiography are - Ans--Pregnancy,
a previous histor of reaction, multiple allergies, and adverse reaction of
fluorescein dye
When taking a picture, what term is used to indicate how much of the picture
will come into sharp focus? - Ans--depth of field
,What pictures are generally taken using color film? - Ans--fundus photos-
macula,optic nerve, external photos and slit lamp photos
In order to achieve sharply focused photographs, the first step you should
do is set the - Ans--reticule
Slit lamp photography is used to document conditions affection the - Ans--
cornea, anterior chamber and lens
Specluar microscopy is a method of photographing and evaluating the -
Ans--Endothelial surface of the corneal
pictures of the posterior pole are obtained by what method? - Ans--fundus
photography
During fluorescein angiography, which two filters are used? - Ans--Barrier
and exciter filters
Injection of sodium fluorescein in the vein has an average arm-to-eye time
of - Ans--8-15 seconds
What is the name of the mechanical device that controls the duration of light
that strikes the film in the camera - Ans--shutter
A 35mm camera with a commonly used lens has a focal length of - Ans--
50mm
with all ophthalmic camera lenses , the higher the magnification ( focal
length) the narrower the - Ans--angle of tview
An F number refers to - Ans--F stop or lens aperture
film sensitivity to light is referred to as - Ans--film speed or ISO ( international
standards organization) number - the higher the number the more sensitive,
or "faster "the film .
what film is generally used for fluorescein angiograms - Ans--black and
white film- ISO400
, What is Rose Bengal used for - Ans--A red dye that stains nonviable
epithelial cells
Rose Bengal is used in making the diagnosis of what corneal condition? -
Ans--Keratoconjunctivitis Sicca
How do Fluorescein and Rose Bengal differ? - Ans--Fluorescein stains
living cells where as Rose Bengal stains NON-living cells
True or false- Eye drops penetrate the eye directly through the corneal into
the anterior chamber ? - Ans--True
What are some Clinical uses for Miotic agents? - Ans--Open angle
glaucoma, angle closure glaucoma, management of convergent
strabismus and management of accommodative insufficiency.
A wide fluorescein pattern on a Goldman applanation tonometry indicates
there is - Ans--to much fluorescein and tears
a wide fluorescein pattern will produce a pressure reading that will be much
than the actual pressure - Ans--higher
If there are too little tears or fluorsecein, the applanation pressure reading
may be too - Ans--low
If the prism is not aligned properly at the axis of the minus cylinder, in
incorrect IOP reading may be obtained if the cornea has of astigmatism or
more - Ans--three Diopters
To obtain an accurate reading when 3 Diopters of astigmatism or more is
present the prism axis in minus cylinder is set at a - Ans--43 degree mark or
red line
Uncorrected induced astigmatism will cause blurring in - Ans--one meridian
using the correction device in the fundus camera is used to compensate for -
Ans--high corneal astigmatism or induced astigmatism.
