YAG laser capsulotomy side effects and risks: what to expect and when to worry

YAG laser capsulotomy is one of the safest procedures in modern ophthalmology, but no laser treatment is entirely without risk. Understanding what is normal — and what needs urgent attention — helps you recover with confidence.

The short answer

Most YAG laser side effects are mild and short-lived: floaters, glare, slight soreness and a small temporary rise in eye pressure. Serious complications such as retinal detachment or lens damage are rare, especially in eyes without additional risk factors.

Common, expected side effects

- **Floaters:** Tiny fragments of the treated capsule are visible for days to a few weeks.

- **Blurred vision:** A misty day, then clearer the next.

- **Mild soreness or grittiness** for a few hours.

- **Light sensitivity** for 24 hours after dilation.

- **Small pressure rise** in the treated eye, usually managed with a short course of drops.

Less common but important risks

- **Raised intraocular pressure** that needs longer treatment

- **Cystoid macular oedema** — a small amount of fluid at the central retina that can blur vision

- **Lens implant pitting** — small marks on the implant that rarely affect vision

- **Iris bleeding**, usually self-limiting

Rare but serious risks

- **Retinal detachment:** The risk is small but measurably higher after YAG laser, especially in short-sighted eyes or those with lattice degeneration.

- **Lens dislocation:** Very rare, mostly in eyes with weak lens support.

- **Persistent macular oedema** requiring further treatment.

When to call the clinic urgently

Contact the clinic immediately if you notice:

- Sudden loss of vision

- A curtain of shadow across your vision

- New dense floaters with flashing lights

- Severe eye pain not relieved by paracetamol

These may indicate retinal detachment or a pressure spike and need same-day assessment.

Book a consultant-led YAG assessment

Ms Tahmina Pearsall offers consultant-led YAG laser capsulotomy from £450 per eye across UK clinics, with a full pre-laser risk assessment. Visit the YAG laser capsulotomy clinic page to arrange an appointment.