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Evaluation of distribution of presbyopic correction through primary healthcare centres in Zanzibar, East Africa
  1. H Laviers1,
  2. I Burhan2,
  3. F Omar2,
  4. H Jecha2,
  5. C Gilbert1
  1. 1International Centre for Eye Health, London School of Hygiene and Tropical Medicine, London, UK
  2. 2Eye Department, Mnazi Mmoja Hospital, Stonetown, Zanzibar, East Africa
  1. Correspondence to Heidi Laviers, International Centre for Eye Health, London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK; laviers{at}hotmail.com

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Introduction

Presbyopia, the age-related decline in visual acuity (VA) for near objects, is an extremely common condition which is readily correctable by spectacles. It has been estimated that 1.04 billion people in 2005 were presbyopic, 517 million of whom were without adequate spectacle correction.1 As the world's population increases, ages and becomes more literate, the demand for near-spectacle correction will increase. Age is overwhelmingly the most important risk factor, but climate, geographic location, gender and ethnicity also contribute to the observed variation in the age of …

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