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WorksheetsOPT508 CO3 TEST 1 PART 1
Total questions: 50
Worksheet time: 38mins
The advantage of kinetic perimetry.
it can only test five to ten degrees for central visual field.
It is a relatively time-consuming type of testing.
The procedure could plot the depth of the defect.
It is very sensitive to detect relative scotoma.
which one is TRUE about the procedure using the Amsler Chart?
The measurement took place in binocular viewing.
The patient wears his/her near spectacle correction.
which one is TRUE?
The false-negative error is high during automated visual field testing because the examiner did not adjust the headrest and chinrest.
The false-negative error is high during automated visual field testing the examiner did not pause the test and give the patient a rest.
Choose the CORRECT comparison(s) about direct fundus biomicroscopy and indirect fundus biomicroscopy.
The indirect fundus biomicroscopy uses minus lens while direct fundus biomicroscopy used plus lens.
The image of direct fundus biomicroscopy is virtual, but indirect fundus biomicroscopy’s image is real.
The image of direct fundus biomicroscopy is erected, but indirect fundus biomicroscopy’s image is inverted.
The image for direct fundus biomicroscopy lies between lens and microscope, but indirect fundus biomicroscopy’s image lies between lens and retina.
The following is/are TRUE about the error and possible cause in interpreting the fundus-photograph finding.
shadow on the left of the photo – camera position to the left side.
partially bluish shadow – insufficient dilation.
shadow on top of photo – droopy eyelid.
shadow on the peripheral of the photo – the eye is too near to the instrument.
The intensity of stimuli in Goldmann perimeter is controlled by the ______.
light
filters
apertures
illumination
_______ is used to plot the blind spot using Goldmann Perimeter.
II3e
V4e
III2e
I4e
There are ____ stimulus according to alphabat stimulus
3
4
5
6
Isopter II3c is similar with
I5c
III1c
I4c
V2c
which one is NOT the potential source(s) of error in the procedure of contact A-scan?
An appropriate selection of eye type in A-scan setting
The corneal compression is too hard.
The probe is not perpendicular with the corneal plane.
In the roman numeral stimulus, each size increment equals to
a four fold increase in area
a four fold increase in diameter
a two fold increase in area
a three fold increase in diameter
Which is the Amsler chart that could distinguish scotoma and metamorphopsia?
chart 2
chart 4
chart 6
chart 8
Which of the following is the biggest and brightest stimulus
I2e
III2e
IV3e
V4e
The visual field is considered abnormal when
Threshold values are significantly brighter for particular boundary
Threshold values are significantly dimmer for particular boundary
The roman numeral in Goldman perimetry stimulus is representing
intensity of stimulus
the size of stimulus
the brightness of the stimulus
the color of the stimulus
Which if the following is TRUE about spectacle correction during the procedure?
use full cylinder correction when cylinder is -1.00DC
No correction is needed for presbyopia
A spherical equivalent is needed when cylinder is -3.00DC
A contact lens is recommended for aphakia
What is the advantages of Goldman Perimetry
it is reproducible
it has storage data back up
it is able to detect the shape of defect
It is sensitive to detect early visual field defect
The stimulus should be moved
1 degree per second
5 degree per second
8 degree per second
10 degree per second
You may start with the peripheral field boundary measurement without the optical correction.
Correct
False
The size of isopter need to be recorded using
similar color
different color
A Scan used
infrared wavelength
ultrasound wavelength
microwave wavelength
The A scan has
probe
chin rest
screen display
occulder
Resolution is the ability of the machine to display two interfaces that lie
further away
close proximity
What is gain?
it is a setting that allow the instrument to measure the eye length in manual mode.
it is a setting that measures the ability of A-scan to display two interfaces that lie nearby.
It is a setting that measure the height of spike in lux unit
It is a setting that is inter-related to the resolution setting in A-scan
The ability of the A scan to pause a few microsecond is to
bounce returning echoes from the probe tip
project returning echoes to the solid structure
received returning echoes after hit solid structure
received returning echoes from the probe tip
High Gain cause
lower resolution
higher resolution
wider resolution
narrow resolution
Why do you need to select an appropriate eye type?
to obtain good resolution of the spike display
to separate two close layer that lie in close proximity
proper velocities between each gate will be chosen by the instrument
High gain setting will get
short reading
longer reading
Application handheld A scan should have ___ high and tall display spikes
4
5
6
7
Immersion A Scan
avoids corneal compression
Measure the eye with touching the cornea
has a scleral shell filled with saline
provide a “vacuum space" over the cornea.
An immersion A scan should have ___ high and tall display spikes
4
5
6
7
A Scan result should be
within 22.0 – 24.5 mm
not more than 0.5mm between eyes
within +/- 0.1 SD between measurement
average measurement of 22mm
The common error of A scan measurement is
Corneal compression
Misalignment of sound beam
appropriate eye type
speed of stimulus more than 5 degree per second
Which of the following is NOT the common error of measurement in A scan?
not occluded non testing eye
Fluid excess
inappropriate eye correction
Air bubble within fluid
Fundus photography instrument have
probe
computer integrated software
camera
fixation target
There 4 fixation to be chosen for funds photograph procedure that including central, nasal, temporal and peripheral fixation.
correct
wrong
Fundus photograph can be done in bright illuminated room.
CAN
CANNOT
During anterior chamber positioning of fundus photography procedure ______.
examiner need to align and position of dots inside the brackets
examiner need to align and position of dots outside the brackets
examiner need to fused the two dots and align the vertical lines
place the dots at the anterior chamber.
in fundus photograph procedure, when you choose higher optical angle, the captured image will be became ____.
narrower
wider
What can you obtain using this test chart?
metamorphosia
central scotoma
peripheral scotoma
horizontal scotoma
What can you obtain using this test chart?
central scotoma
peripheral scotoma
color scotoma
horizontal scotoma
During Amsler chart, the patient ______.
should wear contact lens
should wear near prescription
should wear goggle
should wear neutral density filter
The reason to perform Amsler chart test is to investigate abnormality when the patient reported ____.
always bumps into furniture.
blurry of vision.
problem to recognised someone's faced.
glaring when driving
Tangent screen is a _____ cloth mounted on the wall.
white
blue
red
black
The patient can wear his/her prescription during tangent screen testing procedure.
correct
wrong
What technique to use for detect scotoma during tangent screen test?
twisting
zigzag
winding
Moving stimulus wand too fast is one of the common error in tangent screen procedure.
Yes
No
Threshold is
when the patient able to appreciate the stimulus 50% of times.
when the patient able to appreciate the stimulus 90% of times.
when the patient able to appreciate the stimulus 15% of times.
Supra threshold is
when the patient able to appreciate the stimulus 50% of times.
when the patient able to appreciate the stimulus 90% of times.
when the patient able to appreciate the stimulus 15% of times.
Infra threshold is
when the patient able to appreciate the stimulus 50% of times.
when the patient able to appreciate the stimulus 90% of times.
when the patient able to appreciate the stimulus 15% of times.
