What is the difference between vision correction surgeries?
Laser is used in three procedures worldwide to change the refraction of the cornea and thus achieve permanently clear vision: PRK – the completely safe procedure Laser is used directly on the surface of the cornea, and this method of correction is recommended for refractive errors of under – 4 dioptres. Its advantage is that is extremely safe, and gives excellent results. The disadvantage, though, is that the first three postoperative days are very uncomfortable, and sometimes even painful. Returning to work takes 5 – 8 days. LASIK – the comfortable procedure Laser is used in the completely insensitive layers under the surface of the cornea to correct vision. In the traditional LASIK method, a mechanical tool, the microkeratome, is used to cut a protective flap in the cornea in order to reach the insensitive layers. The advantage of the traditional LASIK treatment is that not only the surgery, but also the postoperative stage is free from any discomfort or pain. Vision stabilises quick
Related Questions
- My vision insurance offers a set amount for frames. If I choose a less expensive frame, can I apply the difference toward an upgraded lens or accessories?
- How can I create contrast using my gray scale vision sensor if there is a color difference between the foreground and the background?
- What is the difference between a hard hat mirror and a peripheral vision system™?
