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SOCT User Manual Version 10.0 rev. A
NOTE Depending on the patient’s gaze at the fixation light, the optical path length
of the visual axis is measured. Make sure that foveola is in the center of scan.
NOTE All distance - thickness parameters (Axial length, Corneal thickness, Anterior
chamber depth, Lens thickness, White-to-white, Pupil size) are measured in
sequence captured tomograms.
NOTE An excessively tilted or decentered IOL may make it impossible to measure
the anterior chamber depth, lens thickness and aqueous depth.
NOTE The user must verify that the eye assignment (OD, OS) is correct for the
entered data.
Biometry Acquisition Mode
Before a biometry examination can be carried out the operator is required to perform the
initial calibration of the device. The calibration procedure is described in chapter 21
Calibration.
Prepare the patient as explained in chapter 8.1 Preparation for examination.
Ask the patient to look at the center of the green spot and blink freely if the sound support is
Mute or disabled. If required, use the large fixation target. See chapter 7.8 Fixation target
change.
Select biometric scan program. SOCT provides biometric scan program in Anterior tab group.
Measurement window to collect and automatically process the biometric data allows to take
exams of one or both eyes of the patient. Measurement is done in two steps. First step is
finding and optimizing the signal from retina, cornea and intraocular lens. In second step
system acquires automatically series of tomograms. Each series contains 4 tomograms at
prepared earlier positions. A single measurement can perform acquisition of 5, 10 or 15 series.
Acquisition time of 5 series is around 3 seconds.
Note: Collecting the data from both eyes is highly recommended.
When using the data taken by this instrument to select intraocular lenses,
thoroughly determine the selection by also examining cataract surgery methods
and other inspections. If incorrect measurement data is used to select intraocular
lenses, further surgery might be required
When using the data taken by this instrument for refractive correction surgery,
thoroughly determine the selection by also examining surgery methods and other
inspections. Refractive correction surgery conducted according to incorrect
measurements or analysis results may result in further surgery or severe
complication such as keratectasia.
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