Myopia Lenses

This has been proven in animal models – Earl Smith III is arguably the world’s leading researcher of this type and you can read an overview lecture of his from 2010, here. Perhaps this is the reason their myopia control efficacy results are seeming to exceed the previous spectacle lens solutions, and equaling that of dual focus soft and orthokeratology contact lenses.
Optical methods include standard prescription eyeglasses or contact lenses. In 2019 contacts to prevent the worsening of nearsightedness in children were approved for used in the United States. This “MiSight” type claims to work by focusing peripheral light in front of the retina. As with any optical system experiencing a defocus aberration, the result could be exaggerated or masked by changing the aperture size. In the case of the eye, a big pupil emphasizes refractive error and a small pupil masks it. This phenomenon can cause a condition where an individual includes a greater difficulty seeing in low-illumination areas, despite the fact that you can find no symptoms in bright light, such as for example daylight.

Special spectacle lens designs have been developed by the optical industry to attempt to control childhood myopia progression more effectively compared to the typical bifocal and progressive designs. Included in these are the peripheral plus design, marketed by Zeiss as MyoVision, which showed a 20% myopia control effect in a one year study, for children aged 6-12 years with a family history of myopia. Bifocal spectacle lenses are like two lenses stuck together – the very best half corrects for long distance vision and the bottom half for reading or more close vision.

Presumed Myopia Control Mechanism

Another available option may be the NaturalVue multifocal —a daily disposable hydrogel lens. Research suggests the most efficient lens design for myopia control is a center-distance multifocal. HAL indicates spectacle lenses with highly aspherical lenslets; PAL, progressive addition lenses; SAL, spectacle lenses with slightly aspherical lenslets; SVL, single-vision spectacle lenses. Some single vision contacts, especially those which reduce peripheral hyperopic defocus, can be handy in myopia control, especially in patients with myopia onset over intensive growth. Group I – MFCL – 24 children with myopia corrected with soft multifocal contact lenses – Biofinity or Proclear type D. This lens has central zone for distance and periphery for near distance – with a progressive addition. Presbyopia—the common condition affecting people over 40 that causes blurry near vision, difficulty with reading and near focusing.

• Treatment options will depend on numerous factors including prescription level, eye sensitivity, personal compliance, hygiene, lifestyle and cost.
• The +1.50 Add with 3 BI R&L was chosen to make sure that there was no change to either lag or phoria once wearing the bifocal, indicating perhaps a different mechanism of action was at play than altering binocular vision – intrigued?
• Mean change in myopia progression when myopia occurred after intensive growth.
• The first onset of myopia carries the risk of a rapid progression of the visual impairment and the achievement of high myopia.
• Share these resources on social media to spread the term about the upsurge in childhood myopia.

While these treatments were shown to be effective in slowing the progression of myopia, side effects included light sensitivity and near blur. Other spherical and toric multifocal lenses are for sale to off-label use. Dr Hutchinson noted that evidence has suggested that higher add powers may bring about better control of myopia progression. These lenses have already been shown to slow myopia progression by -9.7–70% and slow axial elongation by 0–79%.

Highly Aspherical Lenslet Target H Alt Technology

Half of these children wore MiSight® 1 day contact lenses and the other half wore traditional 1 day soft contact lenses. This way, we could see if MiSight® 1 day really made a difference. The progression of myopia slowed in 41% of children who wore MiSight® 1 day contact lenses as compared to those who didn’t1†.
The more recent thought has evolved to the simultaneous myopic retinal defocus theory. Think of this as two planes of focus – one being on the retina to improve myopia, and another while watching retina for myopic defocus – that could be anywhere over the retina and not just in the ‘periphery’. The latest research with this in animal models, again by Earl Smith and colleagues, has sought to comprehend where on the retina (eg. how far into the periphery) and how much defocus difference is necessary. To learn more relating to this, start by reading the introduction in this December 2020 paper, here.

These specially designed lenses already are being prescribed and dispensed in Europe, Asia and Canada, and could soon be available in the United States, pending FDA approval. Our innovative technologies and products—including MiSight® 1 day contact lenses—are making a difference. [newline]And our Brilliant Futures™ Myopia Management Program is merely one more step we’re taking in setting a fresh standard of care for treating myopia in children. When parents are not receptive during these initial conversations, we cause them to become bring their children back in three to half a year to judge the myopia progression. Often, when there is a big change to the axial length and the prescription, they are more receptive to starting treatment at that time. Since we started utilizing novel spectacle lenses, we have seen a notable shift in the chance that parents will consent to begin treatment on their children and the compliance of the treatment.
The eyes of a child with myopia become longer as time passes, which causes distant objects to appear blurry. And, if it’s not addressed, myopia often worsens as your child ages. Review of Myopia Management is a leading way to obtain clinical, practice management, market, and research information on myopia for eye care professionals. Although 2020 is a year that lots of will consider as best forgotten or relegated to history, for spectacle-based myopia management strategies, it marks the finish of ten years of rapid and significant improvements to slow myopia. Myopia control strategies can be utilized one at a time or in combination. Your eye doctor can let you know which methods could have the greatest effect on myopia progression.

Related To Eye Health

Interestingly, patients with an increased lag of accommodation and near esophoria showed a 30% decrease in progression. Still, the magnitude of slowing found with progressive addition lens use is insignificant compared with recent advances in lens design with peripheral defocus
In Canada, options like the Kikko and anticipated Stellest lenses show promising clinical data as well, cementing spectacle lenses as another tool for practitioners to confidently recommend to patients. This double-masked randomized clinical trial was conducted between July 2018 and October 2020 at the Eye Hospital of Wenzhou Medical University in Wenzhou, China. Children aged 8 to 13 years with a cycloplegic spherical equivalent refraction of −0.75 D to −4.75 D and astigmatism with significantly less than −1.50 D were recruited. A data and safety monitoring committee reviewed findings from a planned interim analysis in 2019. Multifocal contact lenses give better myopia correction results in the first 18 months after application compared to single vision contact lenses, while after two years both types of contacts give greater results than spectacles.