Engineering the Graphic Overlay for the PhotonUVC Vet

A pioneering veterinary treatment device is setting new standards in animal eye care, thanks in part to advanced graphic overlay engineering delivered by RH Technical Industries.

Developed by Photon Therapeutics, the PhotonUVC Vet is a world-first device designed to treat corneal infections in animals using UVC light technology. To support this innovation, a highly specialised user interface was required—one that could meet strict clinical, optical, and durability demands.

Supporting a New Approach to Veterinary Eye Treatment

Corneal infections such as keratitis are a major concern in veterinary medicine, often leading to pain or vision loss if not treated effectively. Traditional methods rely heavily on antibiotic drops, which require frequent application and can contribute to antimicrobial resistance.

The PhotonUVC Vet introduces a non-contact solution, using UVC light to deactivate harmful microorganisms in just seconds. The device also incorporates:

• White light for general examination
• Blue light combined with fluorescein dye to highlight corneal damage

This dual-light system required an interface that could precisely manage light transmission while maintaining hygiene and usability in a clinical setting.

Engineering Beyond Standard Interfaces

Rather than using conventional “dead-front” display techniques, where screens remain hidden until illuminated, this application demanded visible, functional light windows at all times. These windows needed to:

• Allow accurate light transmission
• Maintain a professional, integrated appearance
• Prevent internal component visibility

Achieving this balance required a tailored engineering approach.

RH Technical Industries’ Precision Solution

RH Technical Industries delivered a bespoke graphic overlay solution built around three key principles: light control, durability, and precision manufacturing.

Clinical-Grade Surface Design

A textured polyester material was selected to meet the demands of veterinary environments. This provided:

• Reduced glare under bright surgical lighting
• Resistance to harsh disinfectants
• Improved tactile feel, even when used with gloves

Optimised Light Diffusion

To ensure accurate diagnostics, RH engineered grey diffused windows using digitally applied filters. This allowed:

• Balanced transmission of blue and white light
• Clear visibility of corneal ulcers
• Prevention of excessive brightness or glare

Sub-Surface Digital Printing

Graphics were printed beneath the surface layer, protecting them from wear and chemical exposure. This ensures:

• Long-term clarity and legibility
• Resistance to scratches and cleaning agents
• A professional, high-quality finish

Secure Adhesion and Hygiene

A high-performance 3M industrial adhesive was precision-cut to match the device’s compact design. This created a fully sealed interface that:

• Prevents contamination from moisture or debris
• Maintains hygiene standards in clinical use
• Ensures long-term structural integrity

High-Precision Cutting

Using camera-guided digital cutting technology, RH achieved tolerances of ±0.25mm. This level of accuracy ensured:

• Perfect alignment with internal components
• A flush, seamless fit within the device housing
• Elimination of gaps that could trap dirt or bacteria

Delivering Real-World Impact

The collaboration between Photon Therapeutics and RH Technical Industries has resulted in a device that enhances both clinical performance and animal welfare:

• Faster treatment times reduce stress for animals
• Improved hygiene lowers the risk of cross-contamination
• Enhanced diagnostic accuracy supports better treatment outcomes

A Senior Design Engineer involved in the project praised RH’s collaborative approach, highlighting their responsiveness, technical expertise, and attention to detail throughout development.

A Partnership Built on Precision Engineering

This project demonstrates how advanced graphic overlay design plays a critical role in modern medical devices. By combining material science, precision manufacturing, and user-focused design, RH Technical Industries helped transform an innovative concept into a practical, high-performance veterinary tool.

As the PhotonUVC Vet continues to improve standards in animal eye care, it also showcases the importance of engineering detail—where even the smallest component can make a life-changing difference.