Peek Vision are an international charity with the mission of eliminating preventable blindness in the world. Peek Vision had the idea for a precision optical clip-on to turn any smart phone with a camera into a low cost, high quality ophthalmoscope. Their approach is to supply these low cost, easy to use devices to both developed and developing countries to allow more frequent screening of eye diseases. The images or videos captured by the phone camera can be stored and shown to the patient as part of the consultation. Peek Vision chose Wideblue Ltd to develop the concept and take the product to manufacturing. Wideblue designers developed the optical system, the electronics and software operation, and the mechanical designs for easy and secure attachment to any size and type of mobile phone camera. Wideblue worked on the product aesthetics and human factors to develop a product that is functional, intuitive, low cost and easy to use. Wideblue prepared a batch of prototypes for evaluation by various experts. The prototypes have been trialled in UK, USA, Tanzania and Netherlands and found to work perfectly. Wideblue then fully designed the product for production using standard low cost manufacturing techniques. The key challenges overcome were to design the product to fit EVERY POSSIBLE mobile phone, design the product to eliminate unwanted reflections from the cornea, allow various brightness's to be selected, design the product to be as small, easy to use and unobtrusive as possible. Wideblue together with Peek Vision also designed the innovative product packaging. The packaging includes a unique training "eye" allowing clinical users to practice eye examinations on a selection of simulated eye conditions. The training "eye" is supplied with high resolution retina images to educate the user in glaucoma, diabetes, macula degeneration, retinopathy and swollen optic nerve.