Science

Spectacles

What is the effect of uncorrecting, undercorrecting and overcorrecting myopia in children?

This systematic review of 9 studies confirms that under-correction of myopia does not slow progression; rather, at least half of the studies have shown the myopia progression is accelerated. There was no benefit found in overcorrection, and the evidence for un-correction was equivocal. Clinically, this advocates for the full correction of myopia.

Do myopia controlling spectacles with lenslets affect visual quality?

When looking through the ‘treatment zones’ of three different types of myopia controlling spectacle lenses with lenslets, visual acuity is reduced by 3-5 letters and mid-to-high frequency contrast sensitivity is mildly affected compared to single vision spectacles. We’re yet to learn if small differences between designs may influence patient preference. 

One-year myopia control efficacy of spectacle lenses with aspherical lenslets

This study reports one year results from an ongoing randomized clinical trial examining spectacle lenses with highly aspherical lenslet (HAL) or slightly aspherical lenslet (SAL) technology. The findings showed the HAL lens controlled refractive and axial progression by 60-70% and SAL by 30-40% over the first 12 months.

International Myopia Conference 2017 Part 1

The session topics covered prevalence, progression and risk factors of myopia, mechanisms such as light exposure and visual pathways, optical and pharmacological methods of myopia control, genetics, clinical trial considerations, myopic eye shape and accommodation and binocularity.