Topography Guided Laser

Topography Guided Laser Specialist
Topography-guided laser is an advanced technique that can help improve the outcomes of patients undergoing different types of eye surgery and treatment. Dr. Cohen, as well as his teams in Midtown East Manhattan, Glendale, NY and Old Bridge, NJ. are well versed in this state-of-the-art topography-guided laser technology.

Topography Guided Laser Q&A

What are topography-guided lasers?

Topography-guided lasers are laser devices that use the topographical profile of a patient's cornea to perform an array of customized treatments with greater precision and accuracy than standard treatments so patients can enjoy better outcomes. The cornea is the clear surface layer of the eye, and though it may appear completely smooth, it can contain variations in depth and curvature as well as tiny surface aberrations that can affect the visual outcomes of many procedures. Topography-guided lasers use special software to map the surface of the cornea so treatments can be customized to take these individual differences into account, helping patients achieve better outcomes with clearer vision postoperatively, enabling most patients to have better vision than they did with glasses or contacts.

What types of ophthalmology procedures and treatments use topography-guided laser techniques?

Topography-guided lasers are used in many procedures involving the cornea, including:

  • LASIK and Bladeless LASIK to improve the final outcome and visual acuity results so patients can enjoy clearer vision and reduce or eliminate the need for corrective lenses
  • Refractive Surgery for patients who might be more at risk for complications like glare or halo or for re-treatment in patients who experience these issues after their LASIK treatments

In these and other procedures, topography-guided lasers enable more precise treatments that can be customized for each patient's unique eye surface anatomy for superior outcomes.

Topography-Guided Laser vs. Wavefront-Guided Laser

The novel technology of Topography-Guided Laser has numerous advantages over older Wavefront-Guided Laser systems. Here are some of the most important differences:

  • Wavefront maps are influenced by factors -such as the eye’s focus and pupil size at the time of measurement- that do not affect topography. This results in topographical measurements of the cornea being more reproducible.
  • The information from wavefront measurements includes distortions from the crystalline lens inside the eye, which is a changing structure. Topographic measurements only include unchanging corneal distortions making the treatment more accurate
  • Most corneal distortions are present in the edges of the cornea. Topographical measurements are taken of the entire cornea whereas wavefront measurements are limited to the central cornea.


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