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Insights from IMC 2017.

Lesson one

VIRTUAL REALITY

Research presented at the International Myopia Conference (IMC) in Birmingham from the University of Auckland's School of Optometry and Vision Science suggests that using virtual reality (VR) headsets results in a thickening of the choroid.

Drs Philip Morgan and John Phillips investigated whether the unique optical properties of VR might help to ward off myopia by creating the illusion of a long-distance environment through images displayed centimetres from the eyes. "VR headsets tease out the components of near work which may contribute to myopia, by providing the proximal and convergence near clues, without the accommodative demand," they explain. The researchers conclude that the choroidal thickening observed suggests VR technology does not stimulate myopia, despite the very close viewing distances involved.

Lesson two

STAYING SUN-SMART

Children can get enough outdoor light to ward off myopia while still remaining safe from the potentially harmful health effects of the sun's rays.

Research presented by Seang-Mei Saw from the Singapore Eye Research Institute at IMC involved using a mannequin head with a light sensor at the height of a 10-year-old boy to measure light intensity patterns.

The study found that while light levels were highest in an open space (at around 20,000 to 30,000 lux), light levels recorded while the mannequin was wearing a hat, under the shade of a tree or wearing sunglasses were all still much higher than those indoors. Inside light levels were between 200 and 500 lux.

Lesson three

NOVEL LENS DESIGN

Research from The Hong Kong Polytechnic University suggests that daily wear of multi-segment myopic defocus (MSMD) spectacle lenses can slow down myopia progression and axial elongation in short-sighted school children.

The study of 183 Chinese children between the ages of eight and 13 found that those who wore MSMD spectacles over a two-year period had 59% less myopic progression and 60% less axial elongation than those with single vision spectacle lenses.

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Title Annotation:MYOPIA SPECIAL
Publication:Optometry Today
Date:Feb 1, 2018
Words:319
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