What it is
Acquired color vision deficiency means your ability to tell certain colors apart changes after you've had typical color vision. This is different from inherited color blindness, which is usually present from early life and tends to stay stable. People sometimes notice that colors look duller, faded, or harder to tell apart.
Acquired changes can be linked to the eye itself, the nerve that carries visual signals, or the brain areas that process vision. Some medicines, exposure to certain substances, injuries, aging-related eye changes, and other health conditions have been associated with color vision changes. Only a licensed clinician can say what is behind a particular change.
It may affect one eye more than the other, and the pattern of confusion can differ from inherited types such as protan, deutan or tritan. Because the causes vary so widely, the experience differs a lot from person to person.
How it’s traditionally been approached
Traditionally, an eye care professional starts by asking when the change was noticed, whether it came on suddenly or gradually, and whether other vision changes or health concerns are present. Color vision is often checked with standard color tests, sometimes one eye at a time.
Because acquired changes can be connected to other health matters, the evaluation has often included a broader look at the eyes and, when appropriate, coordination with other healthcare professionals. The approach depends on the individual and is decided by the clinician.
Everyday coping has traditionally included labeling items, using good lighting, relying on brightness and pattern cues, and using apps or tools that name colors. Color-enhancing filter glasses and contact lenses are also discussed by some people. They do not cure color blindness and do not restore normal color vision, and how well they work varies with a person's specific type (protan, deutan or tritan) and severity. Ask a provider whether they are appropriate for you, since only a licensed clinician decides that after an evaluation.
How the right doctor may help
The right provider, such as an eye doctor experienced in genetic and acquired color vision evaluation, may help you understand whether your color vision change is likely inherited or acquired. A visit generally involves a conversation about your history, a vision exam, and color vision testing. It may also help clarify whether other follow-up is worth considering.
Helpful questions to bring: When did I first notice this, and does it affect one eye or both? Could any medicines or health conditions be involved? Is the change likely to stay the same, shift, or improve? What does my type and severity mean for daily tasks and work?
You can also ask about the regulatory status and limits of any glasses, lenses or tools you're considering, and about confirming current color vision requirements with a specific employer, licensing body or agency if your job depends on it. Those requirements vary and change over time.
The whole-person view
Body, mind and stress affect each other. Noticing a change in how you see color can be unsettling, and worry can make everyday tasks feel harder. Sleep, general health, and stress levels can all shape how people experience vision changes, so a whole-person view can be useful alongside an eye exam.
Some people find body-based support, such as the approaches listed through Somatic Experiences, helpful for managing stress that comes with health uncertainty. Others prefer talk therapy, such as providers listed through Therapists.plus. Neither replaces an eye evaluation, and both are simply options to consider.
Keep in mind
- Sudden changes in vision, especially with pain, headache, weakness or other symptoms, should be evaluated promptly by a licensed professional; for emergencies call 911.
- Acquired color vision changes can be linked to other health conditions, so licensed professionals should guide care rather than self-diagnosis.
- Color-enhancing glasses and contact lenses do not cure color blindness or restore normal color vision, and results vary by type and severity.
- If distress feels overwhelming, in the U.S. you can call or text the 988 Lifeline at any time.
Not sure where to start? Answer a few gentle questions and choose who you’d like to hear from.
Frequently asked questions
What is acquired color vision deficiency?
Acquired color vision deficiency is a change in color perception that develops after birth, often later in life. It differs from inherited color blindness, which is usually present from early on. An eye care professional can help sort out which one applies to you.
What can cause acquired color vision deficiency?
Possible associations include eye conditions, issues involving the optic nerve or brain, certain medicines, exposure to some substances, injuries and aging-related changes. The cause differs for each person. Only a licensed clinician can evaluate what may be behind your change.
Is acquired color vision deficiency the same as color blindness?
Not exactly. Both involve difficulty telling colors apart, but acquired changes begin later and may be tied to another health or eye issue. Inherited types are usually described as protan, deutan or tritan, while acquired patterns can differ.
Can acquired color vision deficiency be reversed?
It depends on the underlying cause, and a doctor is the right person to discuss this. In some situations color perception may change or improve, and in others it may not. Don't assume either outcome without an evaluation.
Do color blind glasses help with acquired color vision deficiency?
Color blind glasses, meaning color-enhancing filter glasses, do not cure color vision deficiency or restore normal color vision. Some people find they change how colors look, but effectiveness varies by the specific type and severity. Ask a licensed provider whether they are appropriate for you.
Who should I see if my color vision changes?
An eye care professional is generally the right place to start, especially one familiar with genetic and acquired color vision evaluation. Seek prompt care for sudden changes or if other symptoms appear. For emergencies call 911.
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.