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:1/20/2017)... ... ... A new partnership between Goodwill® and Roadie, Inc. aims to make it ... to couches to dressers and bicycles. Roadie — the national on-the-way delivery network — ... center through February 28th. , “January is an exciting time when resolutions are ...
(Date:1/20/2017)... , ... January 20, 2017 , ... Bionic Sports Nutrition ... walks of life, announced it had a successful January ECRM Trade Show in Hilton ... the United States, which allows it to provide its products to all clients at ...
(Date:1/20/2017)... raton florida (PRWEB) , ... January 20, 2017 , ... ... at the Dana Farber Cancer Institute. For Betsy, the clinical trial has been ... her cancer has not worsened. , Betsy Brauser was diagnosed with ovarian cancer ...
(Date:1/20/2017)... (PRWEB) , ... January 20, 2017 , ... “The Angel”: ... the Lord has set out for each of his children. “The Angel” is the ... School of Music in New York City, and impassioned writer. , When asked of ...
(Date:1/20/2017)... ... January 20, 2017 , ... “Christmas in Suffolk”: a ... author, Sara Seymour, who lives in Lafayette, Indiana where she works in a daycare ... coffees and writes. , Published by Christian Faith Publishing, Sara Seymour’s new book is ...
Breaking Medicine News(10 mins):
(Date:1/21/2017)... , Jan. 20, 2017  Today, ... Symposia Conference, "PI3K Pathways in Immunology, Growth ... (NASDAQ: INFI ) presented ... development candidate that selectively inhibits phosphoinositide-3-kinase-gamma (PI3K-gamma). ... to help overcome resistance to checkpoint inhibition ...
(Date:1/20/2017)... CINCINNATI , Jan. 20, 2017 /PRNewswire/ ... has acquired Megadyne Medical Products, Inc., a ... manufactures and markets electrosurgical tools used in ... the intelligence of Ethicon,s* advanced energy devices ... representing a major step forward in Ethicon,s ...
(Date:1/20/2017)... January 20, 2017 ... an Nothilfe   Die internationale humanitäre Stadt soll ... zu schaffen   Seine Hoheit Scheich ... VAE sowie Herrscher von Dubai , ... der Hilfe (International Humanitarian City IHC) zu verdreifachen, um ...
Breaking Medicine Technology: