Self-optimised vision correction with adaptive spectacle lenses in developing countries

Ophthalmic Physiol Opt. 2004 May;24(3):234-41. doi: 10.1111/j.1475-1313.2004.00198.x.


It is estimated by the World Health Organization that about 1 billion people in the developing world would benefit immediately from distance vision and near vision correction if it were available to them. Here we address this problem and provide a solution by correcting vision in the field with adaptive liquid-filled variable focus lenses. We describe the details of the lens and present the results of a series of experiments performed in Ghana, Nepal, Malawi and South Africa that demonstrate that it is possible by simple means to self-determine and obtain correct refraction using such lenses.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Astigmatism / epidemiology
  • Astigmatism / physiopathology
  • Astigmatism / rehabilitation
  • Developing Countries*
  • Equipment Design
  • Eyeglasses*
  • Ghana / epidemiology
  • Humans
  • Malawi / epidemiology
  • Middle Aged
  • Nepal / epidemiology
  • Refraction, Ocular / physiology
  • Refractive Errors / epidemiology
  • Refractive Errors / physiopathology
  • Refractive Errors / rehabilitation*
  • Self Care / methods
  • South Africa / epidemiology
  • Vision, Binocular / physiology
  • Visual Acuity / physiology