Page 64 - The Indian Optician Digital Edition May-June 2023

vision with asymmetrical positive/myopic
like reading using handheld devices instead
of spending time outdoors, are more likely
to be myopic.
Further, according to studies, myopia has
affected almost 30% of the world’s population.
This figure is estimated to rise to 50% if no action
is taken to control it on a timely basis. Likewise,
high myopia is expected to affect 10% of the
world’s population as per projections.
To address such challenges posed to healthy
vision and help control the progression of
myopia, Nova has introduced an external
solution, namely Nova Myosafe, a revolutionary
single vision lens designed under the theory
of Horizontal Defocus management. The key
concept is the correction of the peripheral
‘hyperopic shift’ that reduces the advance of
eye elongation and thus, of slowing the myopia
progression in young wearers.
Nova Myosafe lenses focus on the
peripheral hypermetropic defocus through a
horizontal meridian. This allows to slowdown
the elongation of the eye that, without
correction, would have continued the work of
accommodation to adapt to the peripheral focal
point, causing blurring in the vision of objects at
an intermediate/far distance.
The optical design features of Nova Myosafe
lenses consist of a central vision area, which
provides stable refraction at the geometric
center, surrounded by a progressive peripheral
60 | THE INDIAN OPTICIAN | MAY-JUNE 2023
defocus in the horizontal meridian.
Nova Myosafe lenses considers specific
features of myopic eye’s central and peripheral
refraction around horizontal and vertical
meridians, providing optical balance by creation
of emmetropic refraction profile. These lenses
create peripheral defocus in myopic eyes,
providing conditions to influence on local
neuroregulating mechanisms of eye growth.
These lenses also increase accommodation.
The visual axis of each eye reaches the lens area
where the optical power is higher when gazing;
this leads to the image blurring on fovea, thus,
providing conditions to stimulate relaxation of
accommodation.
Furthermore, these lenses induce positive
spherical aberration in the eye. The progression
of light rays going to the eyes on the edge of
the pupil, is what creates a positive spherical
aberration in the eyes. Nova Myosafe lenses
contribute to the preservation of high binocular
visual acuity.
Nova is renowned for providing premium eye-
care products, ranging from advanced digital
lenses, fashionable frames, Rx sunglasses to
swimming goggles. The addition of the latest
Myosafe lenses to its portfolio is a welcome
addition as it will effectively address the need
for vision correction and protection for young
children and enable them to live healthier lives.
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