General
publicado em 03/10/2012 às 19h20:00
   Dê o seu voto:

Contact lens experimental disrupts progression of myopia in children

New approach 'trains' the eye grow in a way that can correct vision myopic, improving disease control

 
font size
A-
A+

N earsightedness, or myopia, affects more than 40 percent of people in the U.S. and up to 90 percent of children in some parts of Asia. The problem begins in childhood and often progresses with age. Standard prescription lenses can correct the defocus but do not cure nearsightedness, and do not slow progression rates as children grow. But recent experimental work by biomedical scientist David Troilo and colleagues at the State University of New York (SUNY) College of Optometry in New York City supports the development of a potential cure for myopia by using specialty contact lenses that coax the eye to grow in a way that can correct nearsighted vision while reducing myopia progression. Troilo will describe his findings at the Optical Society' s (OSA) Annual Meeting, Frontiers in Optics (FiO ) 2012, taking place Oct. 14 18 in Rochester, N.Y.

Myopia develops when the eye is too long, making it difficult to focus light from distant objects on the retina. Glasses or contact lenses that correct the defocus on the main visual axis can create a slight degree of farsightedness in the peripheral retina, Troilo says. The peripheral farsightedness may worsen myopia because as children grow, the eye grows to move the retina to where the light is focused, naturally lengthening the eye even further.

Troilo has shown that specially designed contact lenses that alter how light is focused in the peripheral retina can induce changes in growth that help reshape the eye in the desired way. The experimental lenses use different focal powers within a single lens: either alternating focal powers across the lens, or confined to the outer edge. Experiments with the new lenses found that they changed eye growth and refractive state, or focus, in a predictable way. The lenses successfully reduced the elongation of the eye that causes myopia progression.

Several contact lens designs may soon be available to help eye doctors manage the progression of myopia in children, Troilo says.

Source: Isaude.net
   Palavras-chave:   Myopia    Contact lens    Myopic    State University of New York    David Troilo   
  • Share this pageShare this page
  • Share this pageCorrect
  • ShareShare
  • AlertAlert
Reduced link: 
  • You are recommending this story: Contact lens experimental disrupts progression of myopia in children
  • Fill in the following form to send your recommendation to your friend:

  • You are suggesting a correction for this story: Contact lens experimental disrupts progression of myopia in children


Receba notícias do iSaúde no seu e-mail de acordo com os assuntos de seu interesse.
Seu nome:
Seu email:
Desejo receber um alerta com estes assuntos:
Myopia    contact lens    myopic    State University of New York    David Troilo   
Comments:
Comment
Leave your comment
Close
(Required fields are marked with an *)

(Your email address will never be published or shared.)

Enter the letters and numbers below and click in the button "send"

  • Twitter iSaúde
advertising
Informe Saúde printed version

Recommend the portal
Close [X]
  • You are recommending this story: http://www.isaude.net
  • Fill in the following form to send your recommendation to your friend:

RSS news from the portal  iSaúde.net
Get the newsletter of the portal  iSaúde.net
Recommend the portal iSaúde.net
News from  iSaúde.net in your blog or website.
Get news on the subject of your interest.
© 2000-2011 www.isaude.net Todos os direitos reservados.