What it is
Many people are born with color blindness, but color vision can also change later in life. This is often called acquired color vision deficiency. It means the change appeared after years of typical color vision, rather than being present from childhood.
Color vision depends on the eye's light-sensing cells, the optic nerve and the parts of the brain that process what we see. A change in any of these areas, or in the clear parts of the eye that let light through, may affect how colors look. Colors may seem washed out, darker, yellowed or harder to separate, and one eye may differ from the other.
Possible contributors that clinicians commonly consider include natural aging of the eye, eye conditions, certain health conditions such as diabetes, some medications, and neurological causes. A sudden change is something to have looked at promptly, because only a licensed professional can tell which cause may be involved.
Color-enhancing filter glasses and contact lenses are often discussed in this space. They do not cure color blindness and do not restore normal color vision. How much they help, if at all, varies with a person's specific type (protan, deutan or tritan) and severity, and they are generally discussed with inherited color blindness rather than as a way to explain or treat a sudden change.
How it’s traditionally been approached
Traditionally, a sudden change in color vision has been approached as something to evaluate, not just to adapt to. Eye care professionals often begin with a conversation about when the change began, whether it affects one eye or both, and what else has changed in a person's health or medications.
From there, a clinician may use color vision testing along with a broader eye exam to look at the front and back of the eye. Depending on what they find, they may involve other health professionals, since some causes relate to overall health rather than just the eyes.
Once a cause is better understood, approaches have often focused on that underlying cause and on practical coping tools, such as labeling, lighting and apps. Some people also ask about tinted or filter lenses. Their regulatory status and usefulness are questions for a licensed clinician, who decides what is appropriate after an evaluation.
How the right doctor may help
The right provider may help by separating a lifelong color vision difference from a newer, acquired change. A visit generally includes a history, a comprehensive eye exam and color vision testing, which may check whether the change is more in one color range than another and whether it differs between eyes.
Providers who offer genetic and acquired color vision evaluation or comprehensive color vision testing may be able to explain what the results suggest and whether further evaluation is worth considering. They are not guaranteed to find a single cause, but a careful evaluation may give you clearer information and a sensible next step.
Helpful questions to ask include: Could this be related to my age, a health condition or a medication I take? Should I be seen by another specialist? How is the type and severity of my color vision change described? Would color-enhancing glasses or lenses be appropriate for me, and what are their limits? Please don't stop or change any medication on your own; talk to the prescribing clinician first.
The whole-person view
Body, mind and stress affect each other, and a change in how you see the world can be unsettling. Worry about what a change might mean can affect sleep, focus and mood, and stress can make everyday tasks feel harder. Looking after general health, rest and routine checkups is part of a whole-person approach.
Some people find that body-based support, such as the approach offered by Somatic Experiences, helps them feel more settled while they wait for answers. Others find talk therapy through Therapists.plus useful for working through health-related worry. These are optional supports that sit alongside, not in place of, an evaluation by a licensed provider.
Keep in mind
- This page is educational only and is not medical advice, a diagnosis or a treatment recommendation.
- A sudden change in color vision can sometimes be linked to serious conditions, so licensed professionals should guide your care and you should have it evaluated promptly.
- Color-enhancing filter glasses and contact lenses do not cure color blindness or restore normal color vision, and results vary by type and severity.
- For emergencies, such as sudden vision loss, severe eye pain or neurological symptoms, call 911; in a crisis, call or text 988.
Doctors who often help
Get matched privatelyFrequently asked questions
Can color vision suddenly change in adults?
Yes, color vision can change in adulthood, and this is called acquired color vision deficiency. It can relate to the eyes, overall health, medications or the nervous system. Because a sudden change can have many causes, it's wise to have it evaluated by a licensed eye care professional.
Can aging cause a change in color vision?
Yes, aging may play a role. Changes in the eye's natural lens and other eye tissues over time can make colors look duller or more yellowed. Only a clinician can tell whether aging or something else explains your change.
Can diabetes affect color vision?
It may. Diabetes can affect the small blood vessels and tissues of the eye, and color vision changes are one thing clinicians may look for. If you have diabetes and notice a change, let your doctor know promptly.
Can a medication change how I see color?
Some medications have been associated with changes in color vision. Never stop or adjust a medication on your own. Tell the prescribing clinician and your eye doctor about what you take so they can consider whether it could be involved.
Do color blind glasses fix a sudden change in color vision?
No. Color blind glasses and color-enhancing contact lenses do not cure color blindness or restore normal color vision. Any benefit varies by a person's type (protan, deutan or tritan) and severity, and they don't address the cause of a sudden change. A licensed clinician can advise whether they are appropriate for you.
Who should I see about a sudden color vision change?
Start with a licensed eye care professional for a comprehensive exam and color vision testing. Providers who offer genetic and acquired color vision evaluation may help clarify what type of change you have. Seek emergency care right away if the change comes with sudden vision loss, severe pain or other neurological symptoms.
Educational resource. Colorblind Glasses shares general information and connects people with independent doctors. It is not medical advice, diagnosis or treatment. Talk with a licensed professional about your health.