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Does selective laser trabeculoplasty (SLT) hurt?

SLT may cause brief mild discomfort but is usually not described as painful. Numbing drops are used before the laser begins.

Sensations during SLT

A contact lens is placed on the eye to focus the laser. You may see bright flashes and hear soft clicks.

  • Some people feel a light pricking or tapping sensation
  • Pain is typically rated very low and short-lived
  • The procedure usually takes just a few minutes per eye
  • Anxiety often reduces once the first few pulses are experienced

After SLT

Mild eye ache, redness, or headache can occur but normally passes quickly. Strong pain is unusual.

  • Anti-inflammatory drops may be given for a few days
  • Over-the-counter painkillers usually manage any soreness
  • Contact your clinic if pain is severe or vision drops suddenly
  • Pressure checks after treatment ensure the eye is responding safely

About Blue Fin Vision®

Blue Fin Vision® is a GMC-registered, consultant-led ophthalmology clinic with CQC-regulated facilities across London, Hertfordshire, and Essex. Patient outcomes are independently audited by the National Ophthalmology Database, confirming exceptionally low complication rates.