If straight lines suddenly look bent, rippled or uneven, or words on a page seem distorted, it can be unsettling. This type of vision change is sometimes called metamorphopsia, a term for seeing objects or lines in a distorted way.
Wavy or distorted vision is a symptom, not a diagnosis. It can occur for several reasons, including conditions affecting the retina or macula, but other parts of the eye or visual system may also be involved. An eye examination is needed to determine the cause.
Quick Answer
Wavy or distorted vision means that objects that should look straight or evenly shaped appear bent, curved, rippled or irregular. It may affect one eye or both eyes, and is often most noticeable when looking at straight patterns, such as doorframes, window blinds, text or tile lines.
Conditions affecting the macula, the central part of the retina responsible for detailed vision, are among the possible causes. New or sudden distortion should be evaluated promptly, particularly if it occurs with vision loss, a missing area of vision, flashes, new floaters or a curtain or shadow in the visual field.
Learn more about how quickly you should see a retina specialist.
What Can Wavy or Distorted Vision Look Like?
People may describe distorted vision in different ways. You might notice that:
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- A doorframe looks curved instead of straight
- Window blinds or tile lines appear wavy
- Lines of text seem uneven or crowded together
- Part of an object appears stretched or compressed
- A face looks distorted in the center
- One section of your vision appears blurry, bent or missing
The medical term metamorphopsia is often used for this type of visual distortion.
SInce your brain combines information from both eyes, a change affecting only one eye can sometimes be less noticeable when both eyes are open. Covering one eye and then the other may help you recognize which eye seems different, but this does not identify the cause and does not replace an eye examination.
Why Do Straight Lines Sometimes Look Wavy?
The macula is the small central portion of the retina responsible for detailed central vision. You depend on it for reading, recognizing faces and seeing fine detail.
Changes involving the macula can disrupt the way visual information is received, which may cause normally straight lines to appear bent or irregular.
Possible retinal or macular causes include:
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- Age-related macular degeneration: Both dry and wet forms of AMD can affect central vision. Distortion is one possible symptom, but wavy vision does not automatically mean you have macular degeneration. Read more about dry macular degeneration and treatment options at MERSI.
- Epiretinal membrane or macular pucker: A thin layer of tissue can develop on the surface of the macula and create wrinkling or distortion.
- Macular edema: Swelling within the macula can affect central vision and may cause blurring or distortion. Learn more about macular edema.
- Diabetic retinal disease: Diabetes can affect retinal blood vessels, and conditions such as diabetic macular edema can affect central vision. MERSI provides additional information about diabetic macular edema.
Other retinal or macular conditions may also cause distortion.
Not every case begins in the retina. Problems involving the cornea, lens, optic nerve, visual pathways or other parts of the eye and nervous system can sometimes change the way objects appear. That is why symptoms alone cannot determine the diagnosis.
Can Wavy Vision Affect Only One Eye?
Yes. Distorted vision may occur in one eye or both eyes.
When the change develops in only one eye, the unaffected eye may compensate when both eyes are open. As a result, some people do not immediately realize that one eye is seeing differently.
A noticeable difference between the eyes deserves professional evaluation, particularly if the change is new.
Is New Wavy Vision an Emergency?
Not every episode of distorted vision is an emergency, but new or sudden distortion should not simply be ignored or watched indefinitely at home.
Gradual distortion still deserves an eye examination, especially if it persists or is becoming more noticeable.
Contact an eye-care professional promptly for guidance if distortion is new, suddenly worse or associated with a noticeable change in central vision.
Seek immediate professional guidance if distorted vision occurs with:
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- Sudden loss of vision
- A new curtain, veil or shadow in your vision
- A new missing or dark area of vision
- Flashes of light
- A substantial increase or shower of new floaters
- Sudden loss of peripheral vision
- Severe eye pain
- New neurologic symptoms, such as weakness, difficulty speaking or other sudden neurologic changes
MERSI’s guide to sudden vision changes explains additional warning signs that may require urgent evaluation.
If symptoms are sudden or severe, do not rely on a routine online appointment request. Contact an eye-care professional immediately for instructions. If appropriate eye care is not promptly available, seek emergency medical evaluation.
Can an Amsler Grid Diagnose the Problem?
No.
An Amsler grid is a pattern of straight lines that may help someone notice that part of their central vision looks wavy, blurred or missing. It can be useful for noticing a change, particularly for some people who are already being monitored for macular disease.
However, an Amsler grid cannot identify what is causing the change and cannot replace a professional eye examination.
If you notice new distortion, do not use a home vision check as a reason to delay contacting your eye-care professional.
What Happens During an Eye Examination for Distorted Vision?
The exact evaluation depends on your symptoms and medical history.
An eye-care professional may assess your vision and examine the structures of the eye, including the retina and macula. A dilated eye examination may be appropriate so the back of the eye can be examined in more detail.
When a retinal or macular problem is suspected, imaging such as optical coherence tomography, commonly called OCT, may be used to examine the layers of the retina and macula.
Additional testing may be recommended depending on what the examination shows.
Do You Need a Retina Specialist?
Not everyone with distorted vision will ultimately have a retinal condition. A comprehensive ophthalmologist can evaluate many unexplained eye symptoms and determine whether subspecialty care is necessary.
A retina specialist may become involved when symptoms or an examination suggest a problem involving the retina, macula or vitreous.
If you are unsure where to start, read Retina Specialist vs Ophthalmologist: Which Do You Need?.
You can also learn more about retina care at MERSI and the early signs of retinal disease.
Evaluating Wavy or Distorted Vision at MERSI
MERSI evaluates patients with retinal, macular and other complex eye conditions. When appropriate, evaluation may include a detailed eye examination, dilation and retinal imaging to help determine where the visual change is coming from.
The important first step is identifying the cause rather than assuming that distortion automatically means macular degeneration or another specific retinal disease.
For non-emergency concerns, you can request an appointment with MERSI.
If your vision change is sudden, severe or accompanied by vision loss, a curtain or shadow, flashes, a substantial increase in floaters, severe pain or neurologic symptoms, contact an eye-care professional immediately rather than waiting for a routine online appointment.
Request an Appointment
If you have persistent or gradually developing distortion and need a non-emergency evaluation, contact MERSI to request an appointment.
For sudden or severe vision changes, contact an eye-care professional immediately for instructions rather than submitting a routine appointment request.
Frequently Asked Questions
Why do straight lines look wavy?
Straight lines may look wavy when something changes the way visual information is received or processed. Conditions affecting the macula are one possible cause, but other eye or neurologic problems can also cause distortion. An examination is needed to determine why it is happening.
Can distorted vision affect only one eye?
Yes. Wavy or distorted vision can affect one eye or both eyes. A problem limited to one eye may be easier to miss when both eyes are open because the other eye may partially compensate.
Is wavy vision always caused by macular degeneration?
No. Macular degeneration is one possible cause, but macular pucker, macular edema and other retinal, ocular or neurologic conditions may also cause distorted vision. The symptom alone cannot establish a diagnosis.
Is sudden distorted vision an emergency?
Sudden distorted vision deserves prompt professional guidance. It becomes especially concerning when accompanied by sudden vision loss, a missing area of vision, a curtain or shadow, flashes, a substantial increase in floaters, severe eye pain or neurologic symptoms.
Can glasses correct wavy vision?
It depends on the cause. A change in prescription may improve vision when refractive error is responsible for visual blur, but distortion caused by structural changes in the retina or macula generally requires evaluation of the underlying condition rather than simply changing glasses.
How is distorted vision evaluated?
Evaluation may include vision testing, an examination of the front and back of the eye, dilation and retinal imaging when appropriate. The tests needed depend on your symptoms and what the eye examination shows.
Medically reviewed by:
Stephen D. Anesi, MD, FACS, Partner & Co-President
Specializes in: Ocular inflammatory diseases, cornea, glaucoma (medical, surgical & MIGS), cataract, and medical retina
Peter Y. Chang, MD, FACS, Partner & Co-President
Specializes in: Ocular inflammatory diseases, vitreoretinal surgery, and cataract
Carl S. Wilkins, MD
Specializes in: Ocular inflammatory diseases, vitreoretinal surgery, and cataract
Reviewed: September 29, 2026