Evaluation of a low-resource screening strategy for ophthalmic pathologies and associated neurological morbidity in an older Tanzanian HIV-positive population.

Globally, 43 million people are living with HIV, 90% in developing countries. Increasing life expectancy with combination antiretroviral therapy (cART) results in chronic complications, including HIV-associated neurocognitive disorders (HAND) and eye diseases. HAND screening is currently challenging. Our aim was to evaluate clinical utility of retinopathy as a screening measure of HAND in older cART-treated individuals in Tanzania and feasibility of smartphone-based retinal screening in this low-resource setting. A cross-sectional systematic sample aged ≥ 50-years attending routine HIV follow-up in Tanzania were comprehensively assessed for HAND by American Academy of Neurology criteria and received ophthalmic assessment including smartphone-based retinal imaging. HAND and ophthalmic assessments were independent and blinded. Diagnostic accuracy was evaluated by AUROC curves. Of 129 individuals assessed, 69.8% were visually impaired. Thirteen had retinopathy. HAND prevalence was 66.7%. Retinopathy was significantly associated with HAND but HIV-disease factors (CD4, viral load) were not. Diagnostic accuracy of retinopathy for HAND was poor (AUROC 0.545-0.617) but specificity and positive predictive value were high. We conclude that ocular pathology and HAND appear highly prevalent in this low-resource setting. Although retinal screening cannot be used alone identify HAND, prioritization of individuals with abnormal retinal screening is a potential strategy in low-resource settings.

10-year trends in English primary care glaucoma prescribing.

BACKGROUND: In 2018 NHS prescriptions in England cost £8.83 billion. Within ophthalmic prescribing, glaucoma is the most costly indication. The 2017 glaucoma NICE guideline shows there is little evidence for clinical preference of particular molecules within a therapeutic class, yet the cost of these products varies greatly. We aim to describe trends in glaucoma prescribing and its relation to recent NICE Guidance. METHODS: Prescription cost analyses for England from 2009 to 2018 were reviewed and data concerning items for the treatment of glaucoma were extracted. Costs and prescription frequencies were normalised for inflation and population. RESULTS: The 2018 cost of glaucoma prescribing was £114.2 million. This cost is 18.1% lower than in 2009 but the annual number of items prescribed per 10,000 people has increased from 1382 to 1668 (20.7%). This is despite an increased prescription of combination drops from 265 to 478 per 10,000 (80.4%). Preservative free item prescriptions rose from 1.7% of total spend in 2009, at £3.4 million in 2009, to 13.9%, in 2018, at £22.5 million. Generic items represented 11.7% of prescriptions in 2009 and 55.2% in 2018. Around half of glaucoma spending is accounted for by the use of preservative free or branded items in the place of the cheapest item in each therapeutic class. CONCLUSIONS: Glaucoma prescribing costs the NHS a great deal. There is a broad trend to generic prescribing as per recent NICE guidance, but significant further costs could be saved with no robustly evidenced clinical consequence.