---
title: What is cataract surgery?
description: "Cataract surgery is an operation to remove a cloudy natural lens and replace it with a clear artificial intraocular lens. It is one of the most successful and commonly performed eye surgeries. ## How cataract surgery works Through a small…"
url: "https://bluefinvision.com/knowledge-base/topics/treatments-procedures/what-is-cataract-surgery/"
updated: "2025-12-11"
category: "Treatments & Procedures"
---

# What is cataract surgery?

Cataract surgery is an operation to remove a cloudy natural lens and replace it with a clear artificial intraocular lens. It is one of the most successful and commonly performed eye surgeries.

## How cataract surgery works

Through a small incision, the cloudy lens is broken up and removed using ultrasound or laser-assisted techniques. A clear lens implant is then inserted, often correcting pre-existing long-sightedness, short-sightedness, or astigmatism at the same time.

- Usually performed as a day-case procedure with local anaesthetic
- Vision typically improves over days to weeks
- Choice of lens implant can influence the need for glasses afterwards

## Further information

The main [cataract surgery](https://bluefinvision.com/cataract-surgery/) page explains the procedure and available lens options. The blog [cataract surgery recovery: what to expect](https://bluefinvision.com/blog/cataract-surgery-recovery-what-to-expect-at-blue-fin-vision-eye-clinic/) provides a neutral overview of healing and aftercare.