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Multifocal contact lenses have two basic portions for focusing light. The center portion of the lens corrects nearsightedness so that distance vision is clear, and it focuses light directly on the retina. The outer portion of the lens adds focusing power to bring the peripheral light rays into focus in front of the retina. Animal studies show that bringing light to focus in front of the retina cues the eye to slow growth.

Multifocal contact lenses slow myopia progression in children

August 11, 2020

Children wearing multifocal contact lenses had slower progression of their myopia, according to results from a clinical trial funded by the National Eye Institute, part of the National Institutes of Health.
Cross-section of mouse eye showing lens, non-pigmented ciliary epithelium (green with sections of red at 12 o’clock and 6 o’clock), and zonular fibers (blue). Green corresponds to fibrillin-depleted NPCE. The space between the arrows indicates where the zonular fibers have snapped.

New research on Marfan syndrome focuses on eyes

June 12, 2020

New NEI-supported research provides insight into the eye conditions associated with Marfan syndrome, where weakened zonule fibers cause vision problems.

Four in 10 US Adults Are at High Risk for Vision Loss

March 12, 2020

In 2017, approximately 93 million US adults aged 18 years or older, or about 4 in 10, were at high risk for vision loss, according to a new study published in JAMA Ophthalmology.
glasses

Study Looks to Measure Benefits of Eyeglasses for Toddlers

October 8, 2019

A team of University of Arizona researchers has received a five-year, $4.1 million grant to study whether using eyeglasses to correct astigmatism in toddlers improves language, cognitive and motor development.
Scientists are designing an accommodating contact lens for presbyopia, a condition that tends to occur in one’s forties when a stiffening of the eye’s lens makes it difficult to focus on close objects. Many of the components for the contact lens – the sensors, electronics, solar cells – would be embedded along the edge of a flexible material. Credit: Hongrui Jiang, Ph.D., University of Wisconsin, Madison.

Fish and Insects Guide Design for Future Contact Lenses

March 14, 2016

Making the most of the low light in the muddy rivers where it swims, the elephant nose fish survives by being able to spot predators amongst the muck with a uniquely shaped retina, the part of the eye that captures light.
Moderate hyperopia, if not treated, may affect reading ability and grade school readiness among preschoolers. Credit: Joe Balintfy, NEI.

Uncorrected Farsightedness Linked to Literacy Deficits in Preschoolers

January 26, 2016

A study funded by the National Eye Institute (NEI), part of the National Institutes of Health, has shown that uncorrected farsightedness (hyperopia) in preschool children is associated with significantly worse performance on a test of early literacy.