What Causes A Macular Scar In The Eye?

A macular scar is a scar at the central part of retina at the back of the eye. Fovea is a smaller area at macula where sharpest image is formed. Macula is responsible for central vision and any disease of macula results into poor central vision.

There are many diseases and pathological processes which affect the macula by first causing inflammation, bleeding and/or exudation and then proliferative or atrophic scarring of macula. These pathologies may be present at the time of birth or may appear later during childhood or even develop later in middle age or old age.

Some causes of macular scar are genetic disorders while some are infective or degenerative in nature. Depending on the cause, the disease and the consequent macular scars may be found in one or both eyes.

Some of the causes of macular scar in children and young adults are macular dystrophies (premature death of macular tissue), retinal telangiectasia (abnormal vessels at macula) and some ocular infections such as Toxoplasmosis and Ocular Histoplasmosis Syndrome (OHS).

While there are other less common disease processes which could potentially affect the macula and therefore cause scarring in young adults and middle age individuals, the most common cause of macular scar in older age group is neovascular type of Age-related Macular Degeneration also known as wet AMD.

Anomalies in central vision is tested with Amsler grid chart. This test can be done even at home.

Amsler Viewer to detect AMD (Age Related Macular Degenertion)

In cases where the pathological process is associated with pain and redness of the eye, consequent visual loss is almost always noticed by the patient. In cases where the disease process is ‘silent’, loss of vision because of macular scarring may not be noticed by the patient when it is only in one eye and the other eye has normal vision.

There are many such patients with unilateral macular scar who cannot detect poor vision in the affected eye for many months or even years. They only notice it when they, for some reason, cover their good eye and notice that the uncovered eye has poor vision.

There are two important points for such patients here. First, they should consult an ophthalmologist for a detailed eye examination to ensure that the disease process in not progressive and that it is not bilateral. In either case, appropriate treatment will be prescribed depending on the cause.

The second point is that macular scarring usually causes irreversible loss of vision in the eye. If it is present in only one eye, the other eye has to be properly taken care of. Since the patient is left with only one functional eye, it is important to immediately consult an ophthalmologist as soon as any symptoms (especially visual) appear.

[Image by National Eye Institute/ CC BY 2.0]

17 thoughts on “What Causes A Macular Scar In The Eye?”

  1. My youngest child has macular scarring from an unknown trauma. Now he is left with one functional eye but at age ten, I want to find out what kind of pissible treatment is available.

    Reply
    • Macular scarring is an irreversible process. Currently, there are no satisfactory treatments available. Research on stem cell transplants and artificial retina is in incipient stage. You may contact a tertiary care eye hospital near you for possible help.

      Reply
      • The doctor said that I have a scar inside my left eye was this consider as macular scar? How I’ll cure it? Btw, the doctor in optha told me to go in pediatric infectious because I have to in order for him to give me medicine for it. Is this required?

        Reply
        • Scars may be at macula (the central part of retina) or outside it (peripheral part of retina). Please follow the advice of your ophthalmologist to manage the cause of the scar properly.

          Reply
  2. if there no current treatment for macular scar why do we still need to contact a doctor when there is nothing that can be done? I have a macular scar in one of my eye and the doctor prescribe Nevanac eye drops….how can that help? and what can glasses do to help the situation?

    Reply
    • Shani, there are two situations where your doctor can help if you already have a macular scar:
      1. If the disease (eg: toxoplasmosis) is likely to reactivate and cause progressive damage and scarring.
      2. If the nature of disease is bilateral and may affect the other eye in future.
      Detailed examination and follow-up will ensure you don’t develop further loss of vision.

      Nevanac (Nepafenac) is an anti-inflammatory drug which reduces pain and inflammation in the eye. Your doctor is the best person to tell you why he/she has prescribed it to you.

      Glasses only help sharpen the vision perceived by the normal retina. They cannot improve the vision in the scarred area.

      Reply
  3. My son has this in his right eye, and we have started to use a patch. Any information on if patching would help at all?

    Reply
    • Patching will not remove the scar. It will only help regain whatever visual potential exists in the affected eye.

      Reply
    • Generally, the scars are not curable but the cause of the scar can and should be managed well (if the causative disease is still active). Please consult a retina specialist in your city for further advice.

      Reply
  4. I have scaring in both my eyes, light makes almost impossible for me to see, is there no surgery out there to remove the scar tissue?

    Reply
  5. I have macular scar after trauma , doctor told me , is it currable,can I have stem cell therapy from stem cell care India and what would be the cost and will it help me, if any other treatments let me know pls

    Reply
    • Search Google for ‘Sankara Nethralaya, Chennai’ or ‘LV Prasad Eye Institute, Hyderabad’. Talk to them on phone for your problem and possible consultation.

      Reply

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.