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DRSplus
–
Operating Manual
14/58
6.
Notes for the operator
This section provides basic information for
drs
plus
operators. No specific skills are required to use the
drs
plus
. However, operators must receive the minimum training in the use of the device. The
acquisition of images using the
drs
plus
does not involve any risks. This is because the device does not
come into contact with the patient’s eye and the only perceived effect will be a flash of light when
each shot is taken. The device is controlled entirely by touchscreen. Once the acquisition sequence
has started, the
drs
plus
will perform the examination automatically.
IT IS THE OPERATOR’S RESPONSIBILITY TO KEEP AND MAINTAIN AN UPDATED COPY
OF THE DATA GENERATED BY THE
drs
plus
THROUGH REGULAR USE OF THE BACKUP
FACILITY, THUS PREVENTING THE RISK OF ACCIDENTAL LOSS OF DATA.
6.1
Definitions
Exam
: any image acquisition session performed using the
drs
plus
for a certain patient on a certain
date.
External eye examination
: examination mode involving the acquisition of images of the ocular surface
instead of the retina.
Field
: portion of the retina visible in a specific image.
Fixation:
the ability of a patient to fix his/her view on a specific point, for example the internal fixation
target of the
drs
plus
.
Fixation target
: small bright green circle visible when looking into the front lens of the
drs
plus
, used
to move the gaze of the patient and capture different fields.
Pupil:
the central circular opening on the ocular surface, through which light enters the eye. The pupil
naturally contracts when struck by light. If the pupil is too small the image quality may be impaired.
Retina:
the posterior pole of the ocular bulb. It is the main area of interest in the images acquired by
drs
plus
.
Stereo exam
: examination mode that involves the acquisition of two images of the retina taken from
different angles, providing a three-dimensional view using suitable prismatic glasses.
❖
If the patient does not fixate correctly and steadily, the images acquired may
relate to portions of retina that are not what is expected.
❖
Provide explanations to patients before placing them in front of the device.