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Femtosecond
What is femtosecond Laser?
Why did the Laser Vision Choose ther LDV Femto CrystalLine?
Comparison of the LDV Femto CrytalLine
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Comparison of the LDV Femto CrytalLineto other Femtosecond Laser machine

Femtosecond Laser

Intralase

Carl Zeiss

Visumax

Femto LDV

CrystalLine

Benefit from

Femto LDV CrystalLine

Repetition Rate

60 kHz 500 kHz >5,000kHz

Femto LDV CrystalLine uses an incredibly fast sequence of tiny light pulses to generate the smooth surface in the corneal tissue which is 10-100 times faster in its speed than the other Femtosecond Lasers. With slow repetition laser is likely to space spots wide apart. This causes a limit on bed quality and leads to tissue bridges.

Energy per pulse table1,000nJ <350nJ <200nJ

Femto LDV CrystalLine uses light pulses with much lower pulse energy. At the higher pulse energies used in other Femtosecond Lasers, the intensity of the light sometimes causes an inflammation which may cause some pain for a few days.

Flap Diameter <9.00 mm <9.00 mm

10.00 mm

Larger corneal flap allows the surgeon to apply the vision correction to a larger area on the cornea, markly reducing the risks of deteriorated night vision and halos.

Portable Machine

NO

NO

YES

No need to relocate the patient from one machine to another between the two steps like the other Femtosecond Laser.

Increasing of Intraocular Pressure slightly slightly slightly

No impact on the treatment result.The patient does not feel the pressure, since the topical anesthetic is applied before the surgery. However, the pressure here is consider to be minimal comparing to the flap creation of the Conventional LASIK (Microkeratome LASIK)

Hinge Position N,S,T,I 360° 360°

Selectable hinge position by surgeon made it possible to place the most suitable degree of the hinge to match with the anatomical and refractive limitation of individual.

Time of Procedure (Sec.) 30-40

Sec.

20-30

Sec.

10-20

Sec.

Faster procedure means less intimidating and unpleasant for the patient. It also is better for the eye to keep the contact time as short as possible.

Flap Thickness Control (microns) 90-400 microns 80-220 microns 90-450 microns

Flap thickness can be accurately programmed into laser before the procedure, which is especially important for patient with thin cornea, or high degrees of correction and large pupil.

Laser Vision the leader in Femto LASIK
 
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