Wave front Analyzer

1
??? ???? ?????? ??????
2
??????? ??? ????? ?????? ? ?????? ????

• Wave front Analyzer
• Biometry
• Lensometr
• Pentacam
• Electrophysiology
• Retinal Camera
• OCT

• ???? ?????
• ???? ????????
• ???????????
• ?????????
• ????? ???
• ??????????
• ?????????- ?????????
• ?????????
• ??? ????
• ???????
• ???????

3
??????? ??? ?????

• ??????? ??? ????? ??????

• ??????? ??? ????? ?????? ? ?????? ????

4
Eye unit
5
??????????? ? ?????????
6
Slit lamp
7
??????????

• ?? ???? ?? ??? ?? ????? ????? ????? ?? ??? ??????
  ???? ????? ??? ???? ?????? ???? ?? ??? ??? ????
  ??????????? ?? ??????? ???? ???? ????? ??? ? ???
  ????????? ?? ?? ??? ???? ?????? ????? ????? ?????
  ?? ????. ?????????? ???? ?? ????? ????????? ?????
  ?????? CSR ? AMD ? ????????? ?????? ? ????
  ????????? ????? ????? ? ??????? ? ?????? ?????
  ?????? ????.

8
??? ?????? ?????????? ? ?????? ????
9
Retinal Camera
10
?????????- ?????????

• ???????????????? ?? ???? ?? ???? ??????? ??? ??
  ???? ??????? ?????? ???? ? ???????? ??? ???????
  ?????.
• ???????? ???? ???? ?? ???? ?? ????? ????? ? ???
  ???? ???? ?????.

11
(No Transcript)
12
?????????

• ????????? ????? ?? ???? ????? ???? ? ??? ?????
  ???. ?????? ????????? ?? ??????? ?? ??????
  ????????? ?????? ??? ??? ?? ???? ???? ???????
  ?????? ???? ? ????? ??????????? ? ???? ?? ? ????
  ??????????? ?????? ????? ?????????? ?? ????? ???.
• ??????? ?????? ????????? ?? ????? ??? ? ??? ??
  ????? ??????? ???? RK? PRK ? LASIK ???.

13
?????????
14
?????????
15
???????

• ???? ????? ????? ?????? ???? ?????.

16
??? ????

• ???? ????
•  ???? ???? ????? ?? ??????????? ???? ?????? ????
  ????? ????? ???.
• ?? ??? ????? ????? ????? ?? ???? ? 8 ???? ??????
  ???? ?????.
• ??? ?? ????????? ??? ???? ? ????? ??? ?? ???
  ????? ?? ????. ?? ??? ???? ?? ???? ?????? ?????
  ???? ?????? ???? ???? ??????? ?? ?? ????? ???
  ????? ????? ??.

17
Scan Pachymeter
18
?????????
Eye e neye
19
???? ?????????
20
OCT

•  ????? ?? ??? ?? ???? ????? ????? ???? ??? ?????
  ????? ? ????? ????? ?????? ???? ?? ???. ?? ???
  ????? ?? ???? ??? ?????? (?? ????? ? ??? ?? ???
  ????????) ? ???? ???? ??? ????? (?? CSR ? AMD ) ?
  ?????? ?????? CPU ?? ?????? ?? ???? ???

21
??? ?????? OCT
22
???????

• ???? ???? ???? ??? ???? ?????.

23
???????????????
24
(No Transcript)
25
WAVEFRONT ANALYZER
26
Hartmann Shack Messung
Lenslet array
CCD Sensor
27
Easy fokussing and x/y adjustment
X / Y grid pattern
Illumination spots help to find correct focus of
the system
before accquisition
28
Datentransfer
200 Hz Pulsfrequenz 0.8 mm Gaußprofil 330 Hz
Eyetracker
ORK-Software und Schwind Database
29
Simulation of visual accuity
Simulation of uncorrected visual accuity (UCVA)
This example shows best corrected visual accuity
(BCVA), because ony sphere and cylinder are
selected
Selection of coefficients simulate the corrected
visual accuity based individual aberrations on
the snellen E
30
Principle of Hartmann Shack Aberrometrie
SLD
Permeable mirror
CCD-sensor
Lenslet array
31
??????? ?????? ???
32
????
33
?????? ???? ?? ??? ?????

• ??? ????? ???????? ??? ??? ???? ? ???? ????? ??
  ????? ?????????? ???? ??? ??????? ???????
  ????????? ??????? AMD ? LSR ? ????????? ?????
  ????? ? ??? ??????? ???? ?? ?? ? ???? ???? ??
  ????????? ????? ? ?????? ?? ???????? ???? ???????
  ( ???????????) ?? ????
• ???Lasik , Lasek, PRK, PTK, ORK

34
????? ???? ?? ????

• 1- Wavelength 2-
  Exposure time 3- Spot
  diameter (mm) 4- power (mW) density (W/cm2)

35
???? ???????

• ??? ??? 193 ???????
• ?????? 200 ? 400 ????
• ????????? ???? ? ????? ?? ??? ????? ???.

36
????? ????????? ??????? ????
37
??? ?????
38
??????? ????
39
???????????
40
Phaco

• ???? ??? ????? ???????? ???? ?????.
• ???? ????? ????????? ?? ?????? 30 ??? 60 ????????
  ??? ????? ? ???? ?????????? ??? ???? ???? ????.

41
?????? ????? ????
42
?????? ????? ????
43
(No Transcript)
44
(No Transcript)
45
Handpice
46
????? ????
47
????? ????
48
Traditional Pulse Ultrasound

• Power is applied in bursts, with fixed 50/50
  burst/rest periods comprising each pulse
• Energy buildup occurs during long burst
  periods rest periods may be too brief for
  cooling to occur

49
????????? ? ???????
50
????????? ????? ???
51
????????

• ???? ??? ?????DCR ???? ????? ? ????? ??? ?? ?
  ?????? ????? ? ???? ??????? ? ?????? ??????.

52
????
53

• ?? ???? ????? ?????? ?? ??????? ???? ?? ???????
  ???? ????? ?????
• ??????? ??? ?? http//treatment.tbzmed.ac.ir

54
?? ???? ?? ???????
?????