SMILE and PRK both reshape the cornea but differ markedly in comfort and recovery. SMILE uses a small internal incision, while PRK treats the surface directly.
Procedural approach
SMILE creates a lenticule of tissue inside the cornea and removes it through a tiny cut. PRK removes the surface epithelium and applies laser treatment before the layer regrows.
- SMILE leaves the surface largely intact and does not require a flap
- PRK is entirely surface-based and uses a bandage lens during healing
- SMILE usually causes only mild discomfort with quick visual recovery
- PRK often involves several days of pain and slower improvement
Suitability and long-term view
Both can achieve stable, clear vision when eyes are well selected. The choice reflects corneal structure and personal priorities.
- PRK may be chosen for very thin corneas or where more tissue must be preserved
- SMILE may suit those worried about dry eye or flap issues
- High-impact sports participants may favour SMILE’s small incision
- Thorough assessment guides which procedure offers the safest outcome
