LASIK, or Laser-Assisted In Situ Keratomileusis, is a widely accepted method for correcting various vision problems such as nearsightedness, farsightedness, and astigmatism. In our CEI offices in New York and New Jersey, in addition to traditional bladeless LASIK, we also offer a new form of bladeless LASIK known as topography-guided LASIK. This approach provides a more personalized and effective solution for vision correction and has become increasingly popular among patients seeking the sharpest possible vision.
Topography-guided LASIK is a type of laser vision correction that leverages the power of advanced mapping technology to create a precise and comprehensive three-dimensional map of the cornea. The cornea is the clear lens in front of the eye, upon which LASIK is performed. This map, known as topography, provides a detailed representation of the cornea’s surface and shape, allowing the LASIK surgeon to tailor the laser correction to the individual needs of each patient.
In comparison, traditional LASIK is based on the patient’s eyeglass prescription, which provides only a general understanding of the cornea’s shape and fails to take into account the many subtle variations and imperfections that can impact vision. With topography-guided LASIK, the laser correction is guided by the comprehensive topography map, which includes thousands of data points providing a more effective and personalized approach to vision correction. This approach results in a sharper vision and lowers the incidence of side effects like glare and haloes.
The first step in topography-guided LASIK is creating a topography map of the cornea. This is done using a corneal topographer, a device that projects ring shaped light patterns onto the cornea and records the reflection of these patterns using cameras. The information gathered is then used to create a highly detailed map of the cornea’s shape and surface.
Once the topography map is complete, the LASIK procedure begins. A femtosecond laser is used to create a thin flap in the cornea, which is then lifted to expose the underlying tissue. The flying spot excimer laser is then used to reshape the cornea, removing small amounts of tissue to correct any imperfections and improve vision. The tissue removal at each individual point is guided by the topography map. This is as opposed to traditional LASIK where a general treatment pattern is used based on the three-point data prescription alone (sphere, cylinder and axis).
The flap is then replaced and allowed to heal, without any stitches. The whole surgical process typically takes about 15-20 minutes. After that the patient can go home. Most people can resume their routine daily activities the very next day.
There are several notable benefits of topography-guided LASIK, including:
Dr. Sapna Parikh reports on the very first case of an ICL in New York performed by Dr. Ilan Cohen.
The surgeon, Dr. Ilan Cohen talks about “the unique” features of Implantable Collamer® Lens surgery as compared with LASIK.