Improvement In Children’s Eyesight Due To Sleeping Lenses
Posted On 22.10.09, In News | Leave a Comment
Those kids wearing contact lenses during the night time could slacken or even impede deteriorating eyesight.
A huge populace of kids having ocular problems are short-sighted in nature – difficulty in viewing distantly located objects occurring due to malformed eyeball.
The novel contact lens seems to function in analogous manner like a dental brace by applying mild pressing action on the eye for restoring the shape to normal.
Scientists have uncovered that subsequent to just a year of dedicated usage, the children showed immense improvement in their eyesight and had far lesser eyesight weakening than those that wore the regular type of contact lenses.
In normal eyesight, the rays of light enter the eye via the cornea, and strike the retina located at the backside of the eye where the transformation of the rays into image-developing signals occurs, which are then transmitted to the brain.
During short-sightedness, the shape of the cornea either has increasing curvature or the eyeball being quite long, due to which the light rays arising from faraway items tend to be focussing in front of the retina instead of directly on the retina leading to fuzzed appearance of objects.
The night time lenses that have been obtainable for many years for assisting adults work by mildly exerting pressure on the cornea leading to a reduction in its curving and hence causing the light to be directly refocused on the retina. It additionally leads to shortening of the eyeball.
In adults this form of re-moulding is short-term as the cornea eventually returns to its formal shape, hence necessitating the regular night use of these lenses. These lenses tend to have a slight harder feel as compared to the softer lenses that are usually worn during the daytime.
But, some years back, researchers observed that kids that wore this kind of contact lens has a much slower weakening of their eyesight – the reshaping was seen to have a long-standing effect.
Based on what they observed, the scientists organised a controlled trial in the United States about 2 years back. The 5-year spanning study dubbed SMART, involved nearly three hundred children that were in the age group of 8-14 years.
Half of the candidates were offered night time lenses while the other half used the daily wear contact lenses. At the conclusion of the initial year, both the sets gave up wearing the lenses for a month’s time for checking whether there was a difference in their prescription.
Measurement of eyesight is done in diopters. Those with short-sightedness are noted to have an approximate deterioration of eyesight between 0.25- 1.2 diopters annually (many adults had prescriptions that were inferior than -5).
The outcome revealed that following the preliminary year, the night time lens using children’s group had no alteration in their prescription while there was an average augment of 0.4 diopters in the control set.
As short-sightedness generally occurs during the initial teen years, it is anticipated that the night time lenses would in the least avert further worsening of eyesight.
Children seemed to be benefiting more as compared to adults due their constantly developing eyes which allows for easier reshaping, much alike the case wherein treating misalignment in children’s teeth tends to be easier as compared to adults.

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