3-31
■
(Initial setting and setting range of converted acoustic velocity)
c) Measurement mode
Set the measurement mode.
● Auto
Select this for normal measurements.
● Auto quick
Select this when measurement is difficult.
● Manual
Select this when measurement is difficult in Auto and Auto quick modes.
d) Setting contact/immersion mode
Complete the settings for contact mode and immersion mode referring to
“3.9.2 Measurement setting.”
● Phakic eye
Average acoustic velocity for axial length : 1,550m/s, 1,500 - 1,600m/s
Crystal lens acoustic velocity : 1,641m/s, 1,540 - 1,740m/s
Anterior chamber depth acoustic velocity : 1,532 m/s, 1,430 - 1,630m/s
Vitreous acoustic velocity (divisional velocity only) : 1,532 m/s, 800 - 2,000 m/s
● Dense cataract eye
Average acoustic velocity for axial length : 1,548m/s, 1,500 - 1,600m/s
Crystal lens acoustic velocity : 1,629m/s, 1,540 - 1,740m/s
Anterior chamber depth acoustic velocity : 1,532 m/s, 1,430 - 1,630m/s
● Aphakic eye
Average acoustic velocity for axial length : 1,532 m/s, 1,430 - 1,630m/s
● IOL eye
Implanted lens acoustic velocity
(Acryl)
: 2,200m/s, 800 - 3,000m/s
(Silicone)
: 1,049m/s, 800 - 3,000m/s
(PMMA) : 2,718m/s, 800 - 3,000m/s
Anterior chamber depth acoustic velocity : 1,532 m/s, 1,460 - 1,630m/s
Vitreous acoustic velocity : 1,532 m/s, 800 - 2,000 m/s
IOL thickness
(Acryl)
: 0.80 mm, 0.10 - 4.00 mm
(Silicone)
: 1.00 mm, 0.10 - 4.00 mm
(PMMA) : 0.80 mm, 0.10 - 4.00 mm
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