What it is
A persistent epithelial defect (PED) is a spot where the cornea's thin outer layer, the epithelium, has not closed over in a typical amount of time. Because the cornea is very sensitive, this can feel uncomfortable, and it can affect vision. Eye doctors look for the underlying reasons the surface is not healing.
Amniotic membrane is the thin inner layer of the placenta's sac, donated after childbirth and then processed. It is used in eye care in a few forms, including sheet-like membranes placed on the eye's surface. After processing, these tissues generally contain no living stem cells, so they are not stem-cell treatments.
Regulatory status matters. Some amniotic membrane devices are regulated as human tissue products, which is a different pathway from drugs. Most amniotic-derived eye drops and serums are not FDA-approved as drugs. A licensed eye doctor can explain how a specific product is classified.
How it’s traditionally been approached
Eye doctors have traditionally started by looking for what may be getting in the way of healing. This can include dryness, nerve changes, inflammation, eyelid issues, past injury, certain medications or other health conditions. Addressing those factors is often a large part of care.
Approaches that have been used for stubborn surface problems include lubricating drops, ointments, protective bandage contact lenses, and eyelid-related measures. Some clinicians also use autologous serum tears, which are pharmacy-compounded from the patient's own blood and are not an FDA-approved drug.
Amniotic membrane placed on the eye has also been used by some clinicians as one option among many, sometimes in an office and sometimes in a surgical setting. Whether any option fits depends on the individual eye, and results vary from person to person.
How the right eye doctor may help
The right provider, often a cornea or ocular surface specialist, may help by examining the eye closely, often with a microscope called a slit lamp and sometimes with dye to see the area. A visit usually includes questions about your symptoms, history, medications and general health. The goal is to understand why the surface is not healing.
If amniotic membrane comes up, you can ask: Is it right for my situation, and are there alternatives? What exact product would be used, where does the tissue come from, and how is it processed? Is it regulated as a human tissue product or something else, and what is its FDA status?
It is also fair to ask what the experience is like, what follow-up looks like, what the risks are, and what the total cost may be, including whether insurance may be involved. A provider may help, but no outcome can be promised. Only a licensed clinician can decide what is appropriate after an evaluation.
The whole-person view
Living with a painful or blurry eye can wear on the whole person. Poor sleep, worry and stress can make discomfort feel bigger, and ongoing discomfort can in turn raise stress. Body, mind and daily habits influence each other, so caring for the whole person can sit alongside medical eye care.
Some people find body-based support, such as the approaches offered through Somatic Experiences, helpful for tension that builds with ongoing health worries. Others value talk therapy through Therapists.plus to work through frustration or anxiety. These are complementary options, and every approach has its place.
Keep in mind
- This page is educational only and is not medical advice, a diagnosis or a treatment plan.
- Eye pain, redness, light sensitivity or sudden vision change can signal a serious problem, so licensed eye professionals should guide care and evaluate you before any product is used.
- For an emergency, such as a sudden vision loss or a severe eye injury, call 911. If you are in a crisis or feeling overwhelmed, call or text 988.
- Ask about any product's source, processing, FDA or regulatory status and total cost, and never promise or expect a particular result.
Not sure where to start? Answer a few gentle questions and choose who you’d like to hear from.
Frequently asked questions
What is amniotic membrane for persistent epithelial defect?
It is the use of processed, donated amniotic tissue on the eye's surface for a cornea area that is slow to heal. Some eye doctors have used it as one option among several. Whether it is appropriate depends on an individual evaluation, and no result can be guaranteed.
What is a persistent epithelial defect?
It is an area where the cornea's outer layer has not closed over in a typical time frame. Causes can include dryness, nerve changes, inflammation, injury or other health conditions. An eye doctor examines the eye to look for the reason.
Is amniotic membrane FDA-approved?
It depends on the product type. Some amniotic membrane devices are regulated as human tissue products, which is a different pathway from drugs, and most amniotic-derived eye drops and serums are not FDA-approved as drugs. Ask your eye doctor about the specific product's regulatory status.
Is amniotic membrane a stem-cell treatment?
No. After processing, most amniotic tissue products contain no living stem cells. They should not be described as stem-cell treatments, and they are not claimed to cure or regrow tissue.
Can amniotic membrane help with dry eye treatment?
Dry eye treatment is a broad area, and an eye doctor may consider many approaches depending on the cause and severity. Amniotic products are sometimes discussed for certain ocular surface problems, but they are not right for everyone. A licensed eye doctor can explain whether one could fit your situation.
What should I ask my eye doctor about it?
Ask why it is being considered, what alternatives exist, and what the product is. Also ask where the tissue comes from, how it is processed, its FDA or regulatory status, what follow-up involves, and the total cost.
Educational resource. Placenta-Derived Eye Serum shares general information and connects people with independent eye doctors. It is not medical advice, diagnosis or treatment. Talk with a licensed professional about your health.