 |
|
Eye tests may predict future vision problems in preterm children
November 14, 2006Testing the eyes of preterm children when they reach 2.5 years of age may predict vision problems at age 10, according to a report in the November issue of Archives of Ophthalmology, one of the JAMA/Archives journals.
"Ophthalmological studies of preterm (prematurely born) children have resulted in recommendations that they need follow-up examinations, to find those in need of extra help," the authors provide as background information in the article. "However, such follow-up programs are expensive and must be based on accurate knowledge of the prevalences of ophthalmological disorders in preterm and full-term children." Previous studies have found that refractive errors, or errors in the degree of light that reaches the back of the eye, are more common in preterm children (born before 35 weeks gestation) than full-term children.
Eva K. Larsson, M.D., Ph.D., and colleagues at Uppsala University Hospital, Sweden, performed retinoscopies-tests for refractive errors that involve examining the back of the eye-in 198 preterm children at 6 months, 2.5 years and 10 years of age. The investigators assessed the development of astigmatism, an unequal curve in one of the eye's refractive surfaces, and anisometropia, a difference in refractive power between the two eyes that can lead to partial vision loss.
The prevalence and degree of astigmatism declined between 6 months and 2.5 years and then remained stable through 10 years; 108 children had astigmatism at six months, 54 at 2.5 years and 41 at 10 years. The amount of anisometropia in the entire group showed no change between 6 months and 2.5 years of age but increased between 2.5 and 10 years. The prevalence, however, remained stable: 15 children had anisometropia at 6 months, 17 at age 2.5 and 16 at age 10. "The presence of astigmatism and anisometropia at 2.5 years of age were the strongest risk factors for having astigmatism and anisometropia at 10 years of age," the authors write.
"In this population-based study, we found that a refractive error at 2.5 years of age predicts that refractive error will also be present at 10 years of age," they conclude. "Recommendations for follow-up examinations must include all aspects of visual function, i.e., visual acuity, contrast sensitivity and visual fields, as well as the refraction, strabismus and perceptual problems. All preterm children should be included in such follow-up examinations for refractive error, irrespective of the retinopathy of prematurity stage," or the degree to which blood vessels in the retina have developed abnormally because of preterm birth.
JAMA and Archives Journals
The prevalence and degree of astigmatism declined between 6 months and 2.5 years and then remained stable through 10 years; 108 children had astigmatism at six months, 54 at 2.5 years and 41 at 10 years. The amount of anisometropia in the entire group showed no change between 6 months and 2.5 years of age but increased between 2.5 and 10 years. The prevalence, however, remained stable: 15 children had anisometropia at 6 months, 17 at age 2.5 and 16 at age 10. "The presence of astigmatism and anisometropia at 2.5 years of age were the strongest risk factors for having astigmatism and anisometropia at 10 years of age," the authors write.
"In this population-based study, we found that a refractive error at 2.5 years of age predicts that refractive error will also be present at 10 years of age," they conclude. "Recommendations for follow-up examinations must include all aspects of visual function, i.e., visual acuity, contrast sensitivity and visual fields, as well as the refraction, strabismus and perceptual problems. All preterm children should be included in such follow-up examinations for refractive error, irrespective of the retinopathy of prematurity stage," or the degree to which blood vessels in the retina have developed abnormally because of preterm birth.
JAMA and Archives Journals
Carnegie Mellon system estimates geographic location of photos
Researchers at Carnegie Mellon University have devised the first computerized method that can analyze a single photograph and determine where in the world the image likely was taken. It's a feat made possible by searching through millions of GPS-tagged images in the Flickr online photo collection.
U-M team: Genetic testing sheds light on degenerative eye disease
Genetic testing for eye disease is providing vital information about complex retinal diseases, especially when used to confirm a clinician's diagnosis.
Type 1 diabetics required for ground-breaking vision study
OPTOMETRY researchers at Aston University's new £10 million Academy of Life Sciences are currently undertaking ground-breaking research into the vision problems caused by diabetics - one of the leading causes of blindness and vision loss in the UK. So far, the study has been very successful with a large number of diabetic volunteers stepping forward to take part in the study, but the researchers still require some more Type 1 diabetics (insulin dependent patients usually diagnosed under the age of 30) in order to obtain reliable results.
Aston University researchers gain insight into diabetic vision problems
Diabetes is one of the major causes of vision loss and blindness in the UK. Now optometry researchers at Aston University's new £10 million Academy of Life Sciences are to carry out a ground-breaking new study which will lead to a greater understanding of visual problems experienced by diabetics.
More Vision Problem Current Events and Vision Problem News Articles
 |
Evaluating Social Programs and Problems: Visions for the New Millennium (Claremont Symposium on Applied Social Psychology) by Stewart I. Donaldson (Editor), Michael Scriven (Editor) Today's evaluators are being challenged to help design and evaluate social programs intended to prevent and ameliorate complex social problems in a variety of settings, including schools, communities, and not-for-profit and for-profit organizations. Drawing upon the knowledge and experience of world-renowned evaluators, the goal of this new book is to provide the most up-to-date theorizing about how to practice evaluation in the new millennium. It features specific examples of evaluations of social programs and problems, including the strengths and weaknesses of the most popular and promising evaluation approaches, to help readers determine when particular methods are likely to be most effective. As such, it is the most comprehensive volume available on modern theories of evaluation... |
 |
LSD: Problem Child and Wonder Drug Starring: Albert Hofmann, Alex Grey, Goa Gil, Ralph Metzner, Carl Ruck Directed By: Michael McAteer In January 2006, 80 speakers and 2000 participants gathered for the International LSD Symposium held in Basel, Switzerland to celebrate Dr. Albert Hofmann's 100th birthday, and to hear the father of LSD speak first hand about his life, his discovery and his thoughts on the psychedelic experience. It was also an occasion for leading doctors, researchers, artists and thinkers in the psychedelic field to present their work. By documenting this historic symposium, LSD: Problem Child and Wonder Drug articulates the scientific, medical, artistic and spiritual issues at the core of the psychedelic debate. While experienced psychonauts will inevitably be touched by the words and demeanour of Dr. Albert Hofmann, the DVD is also ideal for introducing inexperienced friends, parents and colleagues to... |
|
Some People Have Real Problems by Sia Sia, touring once more for the second time this year and now nominated for two Aria awards! To celebrate the occasion, inertia are getting set to release a limited ed CD+DVD version which comprises the Aria breakthrough artist nominated album and the Aria nominated best DVD TV' is my parent' release in its entirety! Bonus DVD: Hiro Ballroom concert | |
 |
Tweet, Tweet, Tweety / Tweety's S.O.S. Also With: Warner Brothers (Producer) |
 |
The Problem Is You! Vision (Primary Contributor) |
 |
Native Remedies Vizu-All Plus for Eye and Capillary Health (50ml) by Native Remedies Vizu-All Plus is a 100% safe, non-addictive natural herbal remedy formulated by our team of natural health experts. Vizu-All Plus can be used consistently to safely support visual health and encourage circulation to the eyes while promoting overall systemic and immune system health. Vizu-All Plus supports the healthy functioning of the eye, thereby helping to maintain routine visual health both day and night, as well as encouraging blood flow to the optical nerve and surrounding tissues. Vizu-All Plus can make all the difference, without compromising health and without serious side effects. Use Vizu-All Plus to promote visual health and support the eye and surrounding tissues; support strength of blood capillaries in the eye; help lessen common problems associated with night vision and... |
 |
Student William de Mark Reads His Lessons in Larger Print Due to His Vision Problems Photographic Poster Print by Nina Leen, 30x40 by Art.com Art.com is the world's largest retailer of art prints, posters, photographs, and framed artwork. With our huge selection of over 400,000 prints, you'll easily find the perfect piece for your home, office, or classroom. Our art is printed on quality paper. When you order framed artwork, the piece is built by our team of in-house professionals. Visit our Amazon store today at www.amazon.com/artdotcom to find Special Offers and search for products based on 'Artist Name' and 'Subject Categories' such as Movie, Music, Vintage, TV, Children, Travel, Kitchen, Museum Art, Animals, Floral, Motivational, and Sports. Art.com is dedicated to providing you with high quality products and service by offering you 100% satisfaction guaranteed. We ship internationally to over 80 countries. Decorate your... |
 |
Vision Screen 9000 by Institute for Disabilities Research and Training Inc Vision Screen 9000 screens for vision problems in the following areas: Far Acuity. This tests ability to recognize small objects at a distance. If this test is hard, you may need new glasses. You may have trouble seeing to drive. Near Acuity. This tests the ability to see small objects that are close to you. If this test is hard, you may need new glasses. You may be straining to read or do tasks like threading a needle. Students with near acuity problems often avoid reading and have poor writing skills. Depth Perception. This tests stereoscopic depth perception. Both eyes must send matching signals to your brain to do this test. If you can see with only one eye, you will not be able to do this test. Depth perception is important for driving, walking on steps and escalators,... |
|
Cataracts and Vision Problems (Films for the Humanities) | |
 |
Eye Power: An Updated Report on Vision Therapy by Ann M. Hoopes (Author), Stanley A. Appelbaum (Author) |
| © 2009 BrightSurf.com |