Using Lasers to Correct Eyesight
When a cornea is incorrectly curved, it causes light that enters the eye to focus beyond or in front of the retina rather than on it. Or in the case of astigmatism, light lands on multiple focal points.
Glasses or contact lenses correct this problem, but Laser Eye Surgery at Optilase offers a permanent solution to waking up to blurred surroundings and having to fumble around for your glasses before you can make anything out clearly.
Ultraviolet light (UV) is invisible to the human eye, but we are exposed to it every day since the sun is the largest natural source of UV light in the universe. UV light is absorbed by the skin and also by the eyes.
Laser Eye Surgery sees artificial UV being applied in a controlled manner so that microscopic amounts of corneal tissue are removed from its surface in order to alter its shape.
What type of laser is used during Laser Eye Surgery?
The Excimer Laser is a highly precise laser that is used during Laser Eye Surgery that emits a very specific cool ultraviolet beam of light (193nm or approximately 60mW).
The principle of how the revolutionary Excimer Laser works makes it particularly suitable for Laser Eye Surgery as it produces targeted laser energy that ruptures the collagen molecules that make up the cornea, which in essence is a transparent connective tissue.
Are lasers safe to use on human eyes?
The Excimer Laser was first used on human eyes in the 1980s and its success in mainstream Laser Eye Surgery is reflected in the fact that LASIK is the world’s most popular elective surgery.
During Laser Eye Surgery, small rapid pulses of laser energy ablate microscopic amounts of corneal tissue from its periphery in the case of farsightedness or from its centre in cases of nearsightedness without causing damage to surrounding tissue.
All lasers used during Laser Eye Surgery are computer-controlled and also use eye-tracking software designed to react to involuntary eye movements.