The data is for the eighth prospective year of the National Cataract Audit corresponding to the 2024 NHS year (01/04/2024 to 31/03/2025). The data was collected as part of routine clinical care on electronic medical record systems in 229 participating centres. The two metrics used in the national cataract audit are adjusted rates for posterior capsular rupture and visual acuity loss. Operative data is more consistent than postoperative data as not all centres use the electronic medical record systems in all areas of their hospital eye service. Visual acuity estimates are only produced for centres with at least 50 eligible operations with the relevant visual acuity measurement. Comprehensive information regarding the eligibility criteria used in the National Cataract Audit can be found on the audit website (www.nodaudit.org.uk). Results are provided for contributing NHS Trusts, Welsh Health Boards, Independent Sector Treatment Centres (ISTC), two private sector providers centres and one centre from Guernsey. The results for Bradford Teaching Hospitals NHS Foundation Trust include patients from Airedale Hospital NHS Foundation Trust as cataract surgery for Airedale patients is performed in Bradford Teaching Hospitals NHS Foundation Trust sites. Results for Moorfields Eye Hospital NHS Foundation Trust include data for patients treated in Bedford Hospital from the Bedfordshire Hospitals NHS Foundation Trust and data for patients treated in the Croydon Health Services NHS Trust. Previous National Cataract Audit years used a different time period for postoperative results, and a different methodology for calculating case complexity adjusted PCR. The changes to both of these results were first implemented in the National Cataract Audit year 8 results.
