CTS Exam AVIXA ACTUAL UPDATED
Exam Questions and CORRECT Answers
Visual Acuity - CORRECT ANSWER - an eye's ability to discern fine details
Resolution acuity - CORRECT ANSWER - The ability to detect that there are two stimuli,
rather than one, in the visual field. It is measured in terms of the smallest angular separation
between two stimuli that can still be seen as separate.
Recognition acuity - CORRECT ANSWER - The ability to correctly identify a visual
target, as in differentiating between a "G" and a "C." Usually, but not always, it is measured in
terms of the angular dimension of the smallest target that can be discriminated. A clinical eye
chart, where visual acuity testing performed using letters, as is done clinically, is a form of
recognition acuity testing.
optotype - CORRECT ANSWER - Is a character used to assess a person's visual acuity. It
looks like a block letter, and is drawn with specific and rigid geometric rules. Only 10 optotypes
are used on the traditional Snellen eye chart: C, D, E, F, L, N, O, P, T, and Z. The perception of
five out of six letters (or a similar ratio) is called the Snellen fraction.
closest viewer - CORRECT ANSWER - Viewer positioned at the shortest distance from
the screen as defined by the viewing area.
farthest viewer - CORRECT ANSWER - The viewer positioned at the farthest distance
from the screen as defined by the viewing area.
element - CORRECT ANSWER - A group of pixels conveying an item of information
percent element height - CORRECT ANSWER - The height of an element in relation to
the overall Image Height. The BDM percent element height factor represents the ratio of element
height to screen height expressed as a percentage. Element Height/Image Height
, Analytical Decision Making - CORRECT ANSWER - Analytical Decision Making
(ADM) covers situations where the viewer must be fully engaged with minute detail present in
the content and needs to be able to resolve every element of the displayed image. Analytical
decision-making environments support critical assessments, including but not limited to
examination of medical imaging, fine arts, engineering or architectural drawings, electrical
schematics, photographic image inspection, forensic evidence, or failure analysis.
Basic Decision Making - CORRECT ANSWER - In Basic Decision Making (BDM)
scenarios, the viewer can make basic decisions based on the displayed image. The decisions are
not dependent on critical details within the image, but the viewer can assimilate and retain
information. The viewer is actively engaged with the content (e.g., information displays,
presentations containing detailed images, classrooms, boardrooms multi-purpose rooms, product
illustrations). Graphic images and text are legible to the extent that the viewer can make
decisions based on what is being seen. Decisions are made by comprehending the informational
content itself and are not dependent on the resolution of every element of detail.
ADM Required Drawings - CORRECT ANSWER - display image width
room layout and dimensions
horizontal viewing angles
and the arc showing the farthest viewer distance.
BDM Required Drawings - CORRECT ANSWER - Plan view:
image width
horizontal viewing angles
closest viewer
farthest viewer
Elevation view:
image height
the bottom of the image to the finished floor
seated and/or standing eye height
30 degree angle up from the bottom of the image
Exam Questions and CORRECT Answers
Visual Acuity - CORRECT ANSWER - an eye's ability to discern fine details
Resolution acuity - CORRECT ANSWER - The ability to detect that there are two stimuli,
rather than one, in the visual field. It is measured in terms of the smallest angular separation
between two stimuli that can still be seen as separate.
Recognition acuity - CORRECT ANSWER - The ability to correctly identify a visual
target, as in differentiating between a "G" and a "C." Usually, but not always, it is measured in
terms of the angular dimension of the smallest target that can be discriminated. A clinical eye
chart, where visual acuity testing performed using letters, as is done clinically, is a form of
recognition acuity testing.
optotype - CORRECT ANSWER - Is a character used to assess a person's visual acuity. It
looks like a block letter, and is drawn with specific and rigid geometric rules. Only 10 optotypes
are used on the traditional Snellen eye chart: C, D, E, F, L, N, O, P, T, and Z. The perception of
five out of six letters (or a similar ratio) is called the Snellen fraction.
closest viewer - CORRECT ANSWER - Viewer positioned at the shortest distance from
the screen as defined by the viewing area.
farthest viewer - CORRECT ANSWER - The viewer positioned at the farthest distance
from the screen as defined by the viewing area.
element - CORRECT ANSWER - A group of pixels conveying an item of information
percent element height - CORRECT ANSWER - The height of an element in relation to
the overall Image Height. The BDM percent element height factor represents the ratio of element
height to screen height expressed as a percentage. Element Height/Image Height
, Analytical Decision Making - CORRECT ANSWER - Analytical Decision Making
(ADM) covers situations where the viewer must be fully engaged with minute detail present in
the content and needs to be able to resolve every element of the displayed image. Analytical
decision-making environments support critical assessments, including but not limited to
examination of medical imaging, fine arts, engineering or architectural drawings, electrical
schematics, photographic image inspection, forensic evidence, or failure analysis.
Basic Decision Making - CORRECT ANSWER - In Basic Decision Making (BDM)
scenarios, the viewer can make basic decisions based on the displayed image. The decisions are
not dependent on critical details within the image, but the viewer can assimilate and retain
information. The viewer is actively engaged with the content (e.g., information displays,
presentations containing detailed images, classrooms, boardrooms multi-purpose rooms, product
illustrations). Graphic images and text are legible to the extent that the viewer can make
decisions based on what is being seen. Decisions are made by comprehending the informational
content itself and are not dependent on the resolution of every element of detail.
ADM Required Drawings - CORRECT ANSWER - display image width
room layout and dimensions
horizontal viewing angles
and the arc showing the farthest viewer distance.
BDM Required Drawings - CORRECT ANSWER - Plan view:
image width
horizontal viewing angles
closest viewer
farthest viewer
Elevation view:
image height
the bottom of the image to the finished floor
seated and/or standing eye height
30 degree angle up from the bottom of the image
