Advanced Technology

AstraMax Topography & AstraPro Customised Treatment Planning Software

Refractive surgery using the excimer laser has, until now, been focussed on corrections to the dioptic power of the cornea. That is, the refraction of the patient has been measured and then entered into the laser system to recreate a spectacle lens on to the surface of the cornea.

There are a number of disadvantages to this approach: Changing the shape of the cornea from prolate to oblate (flattened) post operatively may contribute to less than optimum optical results including:

• Higher order visual aberrations.
• Decreased contrast sensitivity and hazy vision.
• Delivering a symmetrical correction onto an asymmetric cornea leaving post operative irregularity.
• Unnecessary removal of tissue.
• Treatment zones not matched to the pupil in dark conditions causing haloes in vision.
• Surgeries planned using software that does not take into account the corneas shape which provides 78% of the refractive power of the eyes optical system.

AstraMax topography & AstraPro planning overcome these problems by accurately measuring the corneal shape and pupil size in different light levels to determine the optimum treatment.

AstraMax topography & AstraPro treatments planning software automatically:

• Optimises the relationship between the optical zone size, transition zone and tissue removal.
• Maintains the natural prolate shape of cornea.
• Treats irregular and asymmetric corneas as well as regular refractive errors.
• Achieves visual performance superior to standard laser vision correction.

Click here to find out more about our ASTRAMAX LSX EXCIMER LASER.