---
title: "What is femtosecond laser-assisted cataract surgery (FLACS)?"
description: "Femtosecond laser-assisted cataract surgery, or FLACS, uses a computer-guided laser to perform key steps of cataract surgery. It aims to increase precision and consistency compared with using handheld instruments alone. ## How FLACS works The laser is used before the…"
url: "https://bluefinvision.com/knowledge-base/topics/treatments-procedures/what-is-femtosecond-laser-assisted-cataract-surgery-flacs/"
updated: "2025-12-16"
category: "Treatments & Procedures"
---

# What is femtosecond laser-assisted cataract surgery (FLACS)?

Femtosecond laser-assisted cataract surgery, or FLACS, uses a computer-guided laser to perform key steps of cataract surgery. It aims to increase precision and consistency compared with using handheld instruments alone.

## How FLACS works

The laser is used before the main lens removal. You lie under a scanning system that maps your eye in detail.

- The laser creates tiny, accurate cuts in the cornea for access
- It forms a centred circular opening in the lens capsule capsulotomy
- The cataract is pre-softened and divided into segments
- The surgeon then completes removal and lens implantation as usual

## Potential advantages and considerations

FLACS may offer particular benefits in complex cases, though outcomes are similar to excellent conventional surgery for many people.

- More consistent capsulotomy size and position can help lens stability
- Less ultrasound energy may be needed in some dense cataracts
- Extra equipment and time can increase cost and availability limits
- Your surgeon will advise whether FLACS adds value in your situation