12
CHAPTER 2 INSTRUMENT INTRODUCTION
2.1 Basic Performance and Parameters
No
Category
Technical index
Parameters
Note
1
A-Scan
and
Pachymet
ry
Ultrasonic
frequency
10MHz(20MHz)
20MHzis for
Pachymetry
2
Definition
≤0.05mm
axial lengths
measurement
3
≤0.01mm
Cornea measurement
4
Display
resolution
≤0.01mm
5
Probing depth
≥40mm
Limit Axis Range
13-39 mm
Gain
0-99db
6
Velocity
Typical sound velocity
1640m/s
,
1532m/s
You can choose
manually or pre-set the
sound velocity
7
Data output
Cornea,anterior
chamber,lens,vitreous body,axial
length
8
Sets of data
output
10 sets
Average, standard
deviation calculate
9
Formula
SRK-T,Hollady,Hoffer
Q,SRK-2,Binkhorst
Ⅱ
,Haigis
6 usually used
formulas
10
Lens type
Phakic,Dense,Aphakic,PMMA,
Acrylic,Silicone
Selection of Six
Common lensConditions
11
Measurement
method
Auto and Manual
12
Test mode
Immersion,Contact
13
B-scan
Probe frequency
10MHz
15
Scanning
resolution
axial direction ≤0.2,
side direction≤0.4
Standard B-scan
16
Display
resolution
≤0.06mm
17
Probing depth
≥60mm
18
Blind zone
≤ 4 mm
19
Lengthways
geometric
position
accuracy
≤5%
20
Horizontal
geometric
≤ 10 %
Содержание SK-3000A
Страница 12: ...11 1 12 Label This label information is stick on main body of Ophthalmic ultrasound ...
Страница 28: ...27 4 5 P scan Test Interface 1 Eye Switch left eye and right eye ...
Страница 30: ...29 4 6 B scan Test Interface 1 Eye Switch left eye and right eye ...
Страница 35: ...34 ...
Страница 41: ...40 2 Click Properties 3 Double click Internet protocol version 4 ICP IPv4 ...