Y.Domniz ,Y. Suhodrev, M. Visokovsky,

A. Gayer, G.Munzer

CARE VISION ISRAEL

THE LAST DECADE COMEBACK TO

SURFACE ABLATION

MANUAL:7-9 mm with hokey knife

ALC:7-9 mm with 20% alcohol, 15"

40”,mm oz 50mi PTKPTRK:6-6.5

MANUALALCOHOLPTRKALL

124120130374

4+-22.74+-234.2+-244.1+-23

51.3/48.744/5651.6/48.449/51

-4.8+-2-4+-1.7-3.9+-1.5-4.23+-1.7

40+-53047+-53340+-52743+-530

5.7+-1.6ALL

6.3+-1.2MANUAL

5.8+-2ALCOHOL

5.1+-2PTRK

UCVA

LOW

(<0.60)

FAIR

(0.70-0.80)

EXCELLENT

( >0.9)

ALL14%26%60%

ALC11.8%35.6%52.6%

MAN29%39.3%31.6%

PTRK3%6%91%

EFFICACY INDEX UCVA POST/BCVA PRE

SE

0.85+-0.19+0.06+-0.65ALL

0.74+-0.22+0.18+-0.7 MANUAL

0.84+-0.17-0.44+-0.7 ALCOHOL

0.96+-0.1 -0.79+-0.5 PTRK

EFFICACY INDEX (EI) AT ONE MONTH

0.740.84

0.96

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

MANUALALCOHOLPTRK

PRK METHOD

V.A

V.A UCVA POST-OP

V.A BCVA PRE-OP

MANUAL

ALCOHOL

PTRK

ALL

5/124 4%

8/120 6.6%

13/130 10%

26/374 6.9%

6.9%26ALL #

4%5MANUAL

6.6%8ALCOHOL

10%13PTRK

None Mild Moderate Severe

PTRK ALC

2.61.7

CONCLUSION# OF EYESPLATFORMSTUDY

PTRK faster epit. heal

1m better vis. outcome

trends undercorrec.

374

WEAVELIGHT

ALLEGRETO 200

LAVI-STORCH

2011

PTRK safe &

effective, trends

overcorr.

46

SUMMIT

UV 200

*GIMBEL

1995

PTRK faster

epit.heal

trends overcorrec.

300VISX Star S3

** Lee

2005

(Manual superior

to PTRK) not

stat. sig.

278SUMMITCLINCH

1999

T

PROS

Safe, the real “no touch”procedure

Easy to standardize Small ,uniform well

centered area of epithelial removal

Faster epithelial healing Avoidance of mechanical

and chemical trauma Decreased apoptosis,

corneal repair& late haze?(Helena IOVS 1998)

CONS

Prolonged laser exp.,

>early haze , mirror& gas overuse

Trends to over/under correction(varia.epi.thick.)

Predictability varies with laser platform

Buzzonetti

THE IDEAL REFRACTIVE PROCEDURE

?

?

P

T

RK

P

T

RK