PresbyLASIK is a type of laser eye surgery that is bladeless, painless and safe. It corrects changes in distance vision and is usually prescribed to those with eye conditions related to aging, particularly presbyopia.
Presbyopia is a condition which often occurs around the age of 40 and is characterized by blurred near vision.
In relation, F-CAT is a type of laser used for PresbyLASIK that allows reading for patients beyond the age of 40 who have Presbyopia, or those who need corrective additional lenses when reading a magazine, a price tag, or even having trouble seeing their meal at near and intermediate distance. The F-CAT process makes use of excimer lasers and works through ablation.