Navigation Links
Color vision problems become more common with age, reports Optometry and Vision Science
Date:2/20/2014

Philadelphia, Pa. (February 20, 2014) - Abnormal color vision increases significantly with agingaffecting one-half or more of people in the oldest age groups, reports a study in Optometry and Vision Science, official journal of the American Academy of Optometry. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health.

While few people younger than 70 have problems with color vision, the rate increases rapidly through later decades of life, according to the new research by Marilyn E. Schneck, PhD, and colleagues of The Smith-Kettlewell Eye Research Institute, San Francisco. They write, "We find the color discrimination declines with age and that the majority of color defects among the older population are of the blue-yellow type."

Color Vision Abnormalities Increase with Age

The researchers administered color vision tests to a random sample of 865 older adultsage range 58 to 102 years. The study excluded subjects with any type of congenital color-vision defect ("color blindness."). The types and rates of color vision abnormalities were assessed in different age groups.

Overall, 40 percent of the participants had abnormal results on one of the two color vision tests used in the study. Twenty percent failed both tests.

The failure rate was markedly higher in older age groups. Although color-vision abnormalities were uncommon in people younger than 70, they were present in about 45 percent of people in their mid-70s, up to 50 percent of those 85 and older, and nearly two-thirds of those in their mid-90s.

Nearly 80 percent of the abnormalities involved confusion of the lighter (pastel) shades of blue versus purple and yellow versus green and yellow-green. These "blue-yellow" errors are distinct from the "red-green" errors observed in people with inherited color blindness, which affects about eight percent of males and 0.5 percent of females. Although the two tests had different failure rates, they detected similar frequencies of blue-yellow errors.

More Severe Defects May Affect Daily Functioning

The results confirm previous studies showing that color vision "deteriorates measurably" with aging. Most subtle aging-related color vision abnormalities are likely to go unnoticed, the researchers suggest.

However, they note that nearly 20 percent of older adults failed the easier of the two tests, "designed to only detect defects sufficiently severe to affect performance in daily life." Dr Schneck and coauthors note, "These individuals would have problems carrying out some tasks that rely on color vision."

The researchers discuss factors that may contribute to changes in color vision with aging, and to blue-yellow defects in particular. These may include reduced pupil size, admitting less light into the eye; increased yellowing of the lens inside the eye; and changes in the sensitivity of the vision pathways. All of these are known changes with age to the human eye.

Increased rates of eye diseases are another potentially important contributor. Dr Schneck and coauthors add, "The most common age-related eye diseases (glaucoma, age-related macular degeneration, and diabetic eye disease) all produce blue-yellow color vision anomalies, at least in the preclinical or early stages."


'/>"/>
Contact: Connie Hughes
Connie.Hughes@wolterskluwer.com
646-674-6348
Wolters Kluwer Health
Source:Eurekalert

Related medicine news :

1. EyeMusic Sensory Substitution Device enables the blind to see colors and shapes
2. Follow-up tests improve colorectal cancer recurrence detection
3. Colorectal Robotic Surgery Is Now Provided by Los Angeles Colon & Rectal Surgical Associates for All Patients
4. Colorado Podiatrists Announce the Launch of Informative & Educational Website
5. Colorado's Child Resistant Packaging Laws Leave Many Shop Owners in Deep Water
6. Verde Pointe Dental Associates Announce Adding a Custom Automated Prosthetics' 3Shape Trios Color Scanner
7. Bioforce USA / A.Vogel, Industry Leader in Natural Dietary Supplements, Skin Care and Hair Color Launch New Website
8. Reduce, Reuse & Recycle This Holiday Season, Green Is Not Just a Color Anymore
9. Colorectal Cancer Market Analysis and 2019 Forecasts in New Research Report at RnRMarketResearch.com
10. Denver Medical Spa Facial Aesthetics Inc. Now Providing Voluma to Colorado Patients
11. Decreased diversity of bacteria microbiome in the gut is associated with risk of colorectal cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... TX (PRWEB) , ... June 25, 2016 , ... Austin ... of the American College of Mohs Surgery and to Dr. Russell Peckham for medical ... and highly effective treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery ...
(Date:6/25/2016)... ... ... First Choice Emergency Room , the largest network of independent freestanding emergency ... its new Mesquite-Samuell Farm facility. , “We are pleased to announce Dr. Ogunleye ... M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. , Dr. Ogunleye ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of Health and ... their exemplary accomplishments in worksite health promotion. , The Wellness at Work Awards took ... the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses to receive ...
(Date:6/24/2016)... ... , ... Those who have experienced traumatic events may suffer from a complex ... as drug or alcohol abuse, as a coping mechanism. To avoid this pain and ... a traumatic event. , Trauma sufferers tend to feel a range of emotions, from ...
(Date:6/24/2016)... , ... June 24, 2016 , ... ... and Scientific Sessions in Dallas that it will receive two significant new grants ... grants came as PHA marked its 25th anniversary by recognizing patients, medical professionals ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... June 23, 2016 Roche (SIX: RO, ROG; ... for its Elecsys BRAHMS PCT (procalcitonin) assay as a ... septic shock. With this clearance, Roche is the first ... integrated solution for sepsis risk assessment and management. ... infection and PCT levels in blood can aid clinicians ...
(Date:6/23/2016)... 23, 2016 Bracket , a leading clinical ... generation clinical outcomes platform, Bracket eCOA (SM) 6.0, at ... 26 – 30, 2016 in Philadelphia , ... Outcome Assessment product of its kind to fully integrate with ... Bracket eCOA 6.0 is a flexible platform for electronic clinical ...
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening ... industry leaders in advanced audiology and hearing aid technology, ... ™, the world,s first internet connected hearing aid that ...      (Photo: http://photos.prnewswire.com/prnh/20160622/382240 ) , ... ,world firsts,: , TwinLink™ - the first ...
Breaking Medicine Technology: