Laser centration with Topolyzer and EX 500 excimer laser

This video depicts and explains step by step how to optimally center the laser ablation for LASIK and PRK procedures performed with the Alcon Wavelight EX 500 excimer laser. The registration includes pupil shift compensation, and cyclotorsion correction.

[@sukhvirsinghkhanna701]

Sir.
What are Differences between wevelenght of FS 200 excimer and EX 500 excimer.(Ulcon)
In eyes surgery, which is suitable for cantoura vision Surgery.

[@nicholekoyata8353]

Assuming if the lighting in the room of the topolyzer vs what the lighting in the laser room could make a difference?

[@fedecorujo]

???