51
1: Total Result
2: Standard deviation of total results
ERRORS IN MEASUREMENTS
Sometimes the measurement is taken in one of these conditions: bad focus, closed eyelid, tear film
irregularity, high standard deviation in multiple measurements, movement, measurement not in range; in
this case, a warning appears above the measurement.
ATTENTION:
When the symbol
is shown above a measurement, it means that the software
identified an error during the acquisition, which could be: bad focus, closed eyelid, tear film irregularity,
high standard deviation in multiple measurements, movement, and measurement not in range.
The possible problems in acquisition are found in the software with the following methods:
Error cause
Identification
Closed eyelid
Missing ring reflection on the eye Placido Image, on the upper
hemisphere of the cornea
Movement
Interlace pattern shown in acquired image
Broken Tear film
Missing ring reflection on the eye on Placido Image
Bad focus
Defocus of ring reflection on acquired image
High standard deviation on repetition
Big difference between repeated acquisitions
Measurement not in range
Output out of instrument range of measurement
If a warning sign is shown above a measurement, it is recommended to make further acquisitions until
reliable data is obtained.
Содержание MYOPIA EXPERT 700
Страница 1: ...MYOPIA EXPERT 700 Biometer USER MANUAL Rev 1 07 04 2021...
Страница 15: ...13 3 1 DEVICE SAMPLE LABELING...
Страница 24: ...22...
Страница 60: ...58 RX AL Refraction Axial Length trend Combined trend view with Refraction error S E and Axial Length...
Страница 63: ...61 Delete Button Delete the selected row...
Страница 79: ...77 Fig 43 It is possible to switch between ETDRS and Landolt C Visus simulation view...
Страница 82: ...80 Fig 46 14 4 2 3D Press the 3D button to view the 3D map of the altimetric data Fig 47 Fig 47...
Страница 94: ...92 Fig 59...