LASEK (laser epithelial keratomileusis) is a surface laser procedure that preserves and replaces the corneal epithelium rather than discarding it, combining features of PRK and LASIK. It is used to correct refractive errors.
How LASEK Differs
An alcohol solution loosens the epithelium, which is then moved aside as a thin sheet. The excimer laser reshapes the underlying cornea, and the epithelial sheet is repositioned and covered with a bandage lens.
- Aims to reduce discomfort and haze compared with traditional PRK
- No stromal flap is created, preserving more structural strength
- Healing still takes several days with gradual vision improvement
- Some surgeons now prefer transepithelial PRK or other variants instead
Suitability
LASEK may be considered for patients with thinner corneas, certain occupations, or when flap creation is less desirable. Outcomes are similar to other surface procedures when appropriately selected.
- Pre-operative counselling covers expected recovery time and discomfort
- Regular follow-up monitors epithelial healing and refractive stability
- UV protection after surgery remains important
- Enhancements can usually be performed with repeat surface laser if required
