India is home to over 15 million blind people. Diabetes is a global epidemic but India is one of the top 3 countries most affected with 69 million people diagnosed with diabetes. Diabetic retinopathy is the most common complication of diabetes, whereby blood vessels in the retina leak or die and, if left untreated, this leads to visual loss. Sight threatening diabetic retinopathy (STDR) is the leading cause of blindness in the working age group causing loss of productivity, affecting individual households and the national economy. Despite a fast growing economy, a billion people in India live below the poverty line. Diabetes may result in poverty and poverty is associated with diabetes. Therefore, unless the complications of diabetes are identified early and treated, the impact of blindness on the quality of life and productivity of the Indian population will continue to have a negative impact on the nation's economy. Annual screening of all people with diabetes with retinal photography and prompt treatment of STDR has been shown to decrease the rate of blindness in the UK. However, the technology involved is costly, requires trained manpower and is impractical as a method for screening 69 million people in India annually, when the major proportion of health expenses have to borne by the patients. By increasing research capacity and capability through this programme, we aim to initiate systematic diabetic retinopathy screening in India through research and evaluate innovative technologies that can accurately identify patients at risk of blindness due to STDR close to home. These technologies can be applied in all DAC listed countries with prospects of reverse innovation in the UK. The range of research capability activities (SDG Goal 4) and capacity building in India is aimed at better patient outcomes (SDG Goal 3), developing a workforce with quality education (SDG 4), enhancing sustainable livelihoods (SDG Goal 8) and contributing to India's and the UK's work towards an efficient value based healthcare. Firstly, we will introduce population based diabetic retinopathy screening in India and evaluate whether a hand-held camera with smartphone technology and automated grading is feasible in both India and the UK instead of the standard costly cameras and trained manpower employed in the UK currently. We expect more population coverage of retinal screening with this technology and more patients to be referred for treatment. The research capability at the referral hospitals will also improve from this programme with new quality standards being set for treatment. Secondly, we will develop and validate a blood test of a panel of established markers that can detect STDR and other complications of diabetes with the aim to translate into clinical practice. This will allow patients to monitor their own blood tests for STDR. This has the potential to revolutionise the way people with diabetes are monitored for STDR and other complications globally, empower patients and health care workers with new knowledge, improve research capability in India and the UK, improve research capacity in India and improve the global economy in terms of sustained health, industry and innovation and decreasing inequality in terms of access to healthcare. The programme has the potential to change the landscape of diagnosing and triaging STDR globally. In addition, development of a diabetic retinopathy research network of researchers in India will ensure scalability and sustainability of world-class research in India. These research projects will have secondary benefits to the UK in terms of increasing research capability and reverse innovation. Moreover, the programme will also provide comparative cost-effectiveness data of current standard of care versus these newer technologies to inform national guidelines committees and policy makers globally.