Color Blindness News and Research

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Color blindness, or colour blindness, a color vision deficiency, is the inability to perceive differences between some of the colors that others can distinguish. It is most often of genetic nature, but may also occur because of eye, nerve, or brain damage, or due to exposure to certain chemicals.

COVID-19 lockdown timing tied to changes in executive function

The COVID-19 pandemic affected executive function in young children, with preschoolers showing different cognitive growth patterns linked to maternal education.

6 Mar 2026

N2 deep sleep powers your next aha moment, study reveals

A new study in PLOS Biology shows that deep N2 sleep, rather than light N1 sleep, dramatically boosts the likelihood of “aha” moments in a challenging perceptual task. The researchers also reveal that aperiodic brain activity during sleep best predicts who will gain insight after a nap.

30 Jun 2025

The silent struggles of color blind students in the UK

Around 450,000 children are being failed by the UK education system because they have a special educational need and disability (SEND) that is effectively unrecognised by most schools and local education authorities, an author has warned.

24 Nov 2024

Scientists discover the diversity of human visual processing rates

Using a blink-and-you'll-miss-it experiment, researchers from Trinity College Dublin have discovered that individuals differ widely in the rate at which they perceive visual signals.

1 Apr 2024

Online test nails early Alzheimer's diagnosis with biomarker precision

Researchers have developed a novel digital cognitive testing platform, using the Oxford Cognitive Testing Portal, that correlates with serological biomarkers to accurately measure cognitive impairment in Alzheimer's patients. The study highlights the platform's effectiveness in capturing subtle signs of impairment, potentially revolutionizing early diagnosis and tracking of Alzheimer's disease.

28 Aug 2023

Study offers evolutionary insights into pineal color detection system of the lamprey

Most non-mammalian vertebrates have a color detection system in the pineal organ of the brain that is located in a single cell.

17 Sep 2021

Gold nanocomposite contact lenses for correcting color blindness

Imagine seeing the world in muted shades -- gray sky, gray grass. Some people with color blindness see everything this way, though most can't see specific colors.

3 Mar 2021

Spectral notch filters in glasses enhance color vision for those with red-green CVD

A new UC Davis Eye Center study, conducted in collaboration with France's INSERM Stem Cell and Brain Research Institute, found that special patented glasses engineered with technically advanced spectral notch filters enhance color vision for those with the most common types of red-green color vision deficiency ("anomalous trichromacy").

14 Jul 2020

Researchers test clinical safety of gene-based treatment for achromatopsia

People with complete color blindness are born unable to distinguish colors. They see less sharply and are highly sensitivity to glare.

30 Apr 2020

Your school assignment for the day: Spelling and specs

Daisy Leon struggles to sit still and read the letters on the eye chart. Her responses tumble out in a quiet, confused garble.

27 Feb 2020

Researchers conclude that EnChroma's glasses do not improve results of color-blind participants

In Europe, 8 % of the male population and 0.5 % of the female population present a congenital anomaly in their color vision, commonly known as color-blindness.

17 Jun 2019

Lab grown retinal cells provide clues to color blindness treatment

Researchers have grown human retinal cells in the laboratories and thus attempted to understand the basis of color vision and its development in humans. The results showed that certain hormones are essential for the development of color vision in humans and were published in the latest issue of the journal Science.

11 Oct 2018

Five things that parents should know about pediatric eye surgery requiring anesthesia

Healthy eyes play an important role in a child's development, and sometimes more than just a new pair of glasses may be required.

1 Aug 2017

Color-deficiency or color-blindness?

Color blindness could be considered a bit of a misleading term, because there are very few people who can't see color at all. Most people have what we call color deficiency or color confusion, which means that they're not blind to color; they just see a reduced number of colors.

From Vision Express 22 Sep 2016

Research: X and Y DNA swapping may occur more often than previously thought

It turns out that the rigid "line in the sand" over which the human sex chromosomes---the Y and X--- go to avoid crossing over is a bit blurrier than previously thought. Contrary to the current scientific consensus, Arizona State University assistant professor Melissa Wilson Sayres has led a research team that has shown that X and Y DNA swapping may occur much more often.

24 Mar 2016

New UAB study shows connection between ADHD and vision problems in children

Attention deficit/hyperactivity disorder is one of the most frequently encountered neurodevelopmental disorders of childhood, and a new study from researchers at the University of Alabama at Birmingham recently published in Optometry and Vision Science shows a relationship between ADHD and vision impairments in children.

25 Feb 2016

Scientists identify gene mutation that causes color blindness

A rare eye disorder marked by color blindness, light sensitivity, and other vision problems can result from a newly discovered gene mutation identified by an international research team, including scientists from Columbia University Medical Center.

3 Jun 2015

Renowned scholars to address social, psychological harm of colorism at global conference

Colorism, the practice of discrimination based on skin tone even among people of color, is rarely addressed publicly and is uniquely different from racism.

13 Mar 2015

New Baylor research explores novel non-invasive technology for pediatric eye exams

Picture a toddler getting his first eye exam. He's seated in a strange room, with strange instruments and strange bright lights. He can't sit still or open his eyes long enough for that diagnostic poof of air - especially if he has trouble seeing anyway, as children with achromatopsia do.

23 Jan 2015

Study reveals that color vision abnormalities increase with age

Abnormal color vision increases significantly with aging-affecting 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.

24 Feb 2014