What is Scan4Safety in ophthalmology?

Ophthalmology is one of the highest-volume surgical specialties in the NHS, with 581,369 admissions to hospital for cataract surgery in England in 2023/24. Barcode scanning technology supports safer, more efficient care by creating a digital record linking each patient to the specific lens or device implanted during their procedure.

Why does it matter?

Selecting the wrong intraocular lens (IOL) is a recognised patient safety risk, and can be a Never Event under the ‘wrong implant/prosthesis’ category. Each patient requires a lens with precise measurements calculated preoperatively, and implanting the wrong lens can result in poor visual outcomes requiring corrective surgery. Manual processes for lens selection and documentation create opportunities for error, particularly in high-volume lists where multiple lens types may be in use simultaneously.

Paper-based recording also creates challenges for product traceability. If a lens is subject to a manufacturer recall or field safety notice, identifying affected patients quickly depends on accurate implant records.

How scanning supports safer ophthalmology care

Scanning the patient’s wristband and the lens barcode at the point of implantation:

• Verifies the correct lens is being used for the correct patient before implantation, providing an automated safety check
• Alerts staff in real time if the scanned lens does not match the lens specified in the patient’s record
• Creates an automatic digital record of the exact lens implanted, including batch number and serial number, supporting MDOR data submission
• Enables rapid identification of affected patients in the event of a product recall or field safety notice
• Supports automated reordering of replacement stock, reducing administrative time and the risk of running out of lenses mid-list

Operational benefits

Ophthalmology offers particularly strong operational benefits from scanning. High procedure volumes mean that time savings per case accumulate quickly, and the relatively standardised product range makes barcode coverage from suppliers more achievable than in some other specialties.

Leeds Teaching Hospitals NHS Trust, one of the original Scan4Safety demonstrator sites, implemented barcode scanning in ophthalmology as part of its trust-wide programme. The scanning process supports automated lens ordering, reducing manual stock management and releasing clinical and administrative time.

The value of this digital infrastructure was demonstrated clearly in February 2023, when the trust received notification of a manufacturer recall affecting a batch of intraocular lenses. The digital records created using Scan4Safety, meant in just 40 minutes the team was able to identify 500 patients who had received a lens from the affected batch — including their names, dates of birth, and the date and time of their surgery. This information was passed directly to clinicians, enabling all 500 patients to be reviewed in outpatient appointments over the following six weeks to check for any adverse effects.

Following the recall, the Clinical Director for Ophthalmology recommended that patient contact details also be added to the information sent to clinicians. This change has since been implemented, meaning that in any future recall the trust can move immediately from identifying affected patients to contacting them directly.

Connecting with other use cases

Scan4Safety in ophthalmology connects with other scanning applications:

• Inventory Management — lens stock tracked from receipt to patient use, supporting automated reordering
• Medical Device Outcomes Registry — implant data submitted automatically at point of care
• Theatres — ophthalmology day surgery units can adopt similar scanning workflows to main theatres

Getting started

For organisations looking to extend scanning into ophthalmology, establishing an Inventory Management System provides a practical foundation. Trusts should engage their ophthalmology clinical lead early, review lens supplier barcode compliance, and design scanning workflows around the specific environment of ophthalmology day surgery, which may differ from main theatres.