Navigation Links
Achieve early diagnosis of ocular pathologies such as keratitis and macular degeneration

This release is available in French and Spanish.

Researchers from the University of Granada have provided an early diagnosis of certain ocular diseases that are very common today, such as age-related macular degeneration and keratitis, by applying an existing optical technique that, nevertheless, had never before been used for this purpose.

Scientists from the UGR have studied the image quality in subjects affected by one of these two pathologies, finding a greater amount of ocular aberrations and a higher level of scattering (term associated with the dispersion that light suffers when passing through the various ocular media) in affected eyes compared with results in healthy eyes. This significantly affects visual performance.

This work has been performed by the researcher Carolina Herrera Ortiz, from the Optics Department at the University of Granada, and directed by professors Jos Ramn Jimnez Cuesta and Francisco Prez Ocn.

Age-related macular degeneration (ARMD) is the leading cause of central vision loss in developed countries, and mainly affects people of over 50 years of age. As far as keratitis is concerned, this condition causes inflammation of the cornea and can cause blindness, due to the severe alterations that the corneal surface may suffer.

Optical instruments

To carry out this work, the scientists measured the image quality with two optical instruments and used a psychophysical test for assessing visual performance. Results from patients with ARMD were compared with those obtained from a control group of similar age without any ocular pathology. Thus, the researchers could verify that for individuals affected by this condition there is an increased level of ocular scattering that could be mainly due to the disruption suffered by the light reflected in the damaged retina of the ARMD eyes, because a priori optics are not expected to be altered, since it is a retinal pathology.

On the other hand, optical quality and visual performance have also been studied in patients affected by keratitis. Eyes affected by keratitis present a poorer optical quality and a reduced visual performance that improves significantly after the resolution of the pathology. Nevertheless, once medical treatment ends, eyes that suffered from keratitis still have a worse image quality compared to the contralateral healthy eye, a result that significantly influences visual performance even having reached the normal values of visual acuity.

Visual quality characterization

The results of this research carried out at the UGR will make a full and objective characterization of visual quality in patients affected by any of these ocular pathologies. So far, the use of new techniques for assessing objectively the optic quality of the eye has been limited to studies on refractive or cataract surgery. However, as Carolina Ortiz Herrera suggests, this work "may be of particular interest to establish an early diagnosis of certain ocular diseases such as age-related macular degeneration, the main cause of central vision loss in developed countries."

Furthermore, this technique allows researchers to carry out a monitoring of possible stages of both diseases. Ortiz Herrera stresses the importance of including "both in the clinical practice of optometry and ophthalmology" the use of new techniques that, objectively, could indicate deterioration in vision even when the visual acuity values are normal, since "vision is not only seeing well, but providing quality and comfort."


Contact: Carolina Herrera Ortiz
University of Granada

Related medicine news :

1. Kingfisher Healthcare (KFH) Achieves World Class Quality Platform
2. Kaiser Permanente Achieves Climate Action Leader Status
3. Computer models help raise the bar for sporting achievement
4. J.D. Power and Associates Reports: Hackensack University Medical Center Recognized as First Hospital to Achieve Distinction for Providing an Outstanding Inpatient Experience in All Four Service Areas
5. OSF HealthCare Achieves Impressive Tobacco Quit Rates with the Free & Clear(R) Quit For Life(TM) Program
6. Siemens Announces Early Termination of Hart-Scott-Rodino Waiting Period For Acquisition of Dade Behring Holdings, Inc.; U.S. Antitrust Clearance Achieved
7. Smurfit-Stones Hodge, LA, Mill Becomes First to Achieve Safety Milestone
8. Batters may achieve dramatic increases in home runs through steroids
9. Wyeths Pearl River, N.Y. Facility Celebrates 100 Years of Achievements in Health care
10. LMS integrated obstetrics solution achieves general availability
11. Nations Largest Dialysis Patient Organization Recognizes the Achievements of Patients and Leaders in Kidney Care
Post Your Comments:
Related Image:
Achieve early diagnosis of ocular pathologies such as keratitis and macular degeneration
(Date:6/27/2016)... Park, KS (PRWEB) , ... June 27, 2016 , ... ... in retailers of Eyeglasses . , Millions of individuals in the United States ... eyeglasses have become a way to both correct vision and make a fashion statement. ...
(Date:6/26/2016)... ... ... a legally blind and certified personal trainer is helping to develop a weight loss fitness ... to fix the two major problems leading the fitness industry today:, , ... They don’t eliminate all the reasons people quit their exercise program ...
(Date:6/25/2016)... ... 25, 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX users can ... CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms over 1,300 hand-drawn ... X . Simply select a ProHand generator and drag it above media or text ...
(Date:6/25/2016)... ... June 25, 2016 , ... Conventional wisdom preaches the benefits of moderation, whether ... latter, setting the bar too high can result in disappointment, perhaps even self-loathing. However, ... their goal. , Research from reveals that behind the tendency ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... Scientific Sessions in Dallas that it will receive two significant new grants to ... came as PHA marked its 25th anniversary by recognizing patients, medical professionals and ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016  MedSource announced ... as its e-clinical software solution of choice.  This ... best possible value to their clients by offering ... The preferred relationship establishes nowEDC as the EDC ... for MedSource,s full-service clients.  "nowEDC has long been ...
(Date:6/23/2016)... 23, 2016 Research and Markets ... Market by Type (Organic Chemical (Sugar, Petrochemical, Glycerin), Inorganic ... Coating, Parenteral) - Global Forecast to 2021" report ... The global pharmaceutical excipients market is projected to ... of 6.1% in the forecast period 2016 to 2021. ...
(Date:6/23/2016)... 2016 Research and Markets has announced ... Analysis 2016 - Forecast to 2022" report to their ... contains up to date financial data derived from varied research ... trends with potential impact on the market during the next ... which comprises of sub markets, regional and country level analysis. ...
Breaking Medicine Technology: