https://www.cehjournal.org/article/more-research-needed-to-assess-the-magnitude-of-refractive-errors-world-wide/ 2013-06-30T14:46:55+00:00 weekly 1.0 https://www.cehjournal.org/article/the-challenge-of-providing-spectacles-in-the-developing-world/ 2013-06-30T17:07:43+00:00 weekly 1.0 https://www.cehjournal.org/article/spherical-refraction-for-general-eye-workers/ 2013-06-25T15:13:40+00:00 weekly 1.0 https://www.cehjournal.org/article/refractive-errors-magnitude-of-the-need/ 2013-06-27T19:30:10+00:00 weekly 1.0 https://www.cehjournal.org/article/vision-testing-for-refractive-errors-in-schools-screening-programmes-in-schools/ 2013-06-30T17:08:38+00:00 weekly 1.0 https://www.cehjournal.org/article/optics-and-refraction/ 2013-07-11T16:00:54+00:00 weekly 1.0 https://www.cehjournal.org/article/an-introduction-training-essential-for-effective-eye-health-promotion/ 2013-06-29T16:21:07+00:00 weekly 1.0 https://www.cehjournal.org/article/teaching-eye-health-a-new-series/ 2013-06-29T16:21:08+00:00 weekly 1.0