What Is Band Keratopathy? Symptoms, Causes, and Treatment
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Quick Answer: What is band keratopathy?
Band keratopathy is a condition in which calcium deposits collect in layers of the cornea, forming a band that clouds the eye. [1] Deposits can break off and scratch the eye, causing pain, light sensitivity and blurred vision. [1] It develops when calcium levels are out of balance from eye disease, immune disorders or kidney disease. [1] Chelation with EDTA removes the deposits. [1]
Key takeaways
Band keratopathy is calcium deposits in layers of the cornea that make it murky instead of clear. [1]
The deposits form a belt shape, usually starting at the cornea's outer edge and moving toward the center. [1]
You may feel it (pain, grit) before you see it: thick deposits can break off and scratch the eye. [1]
Causes include eye diseases, immune system disorders, and hypercalcemia (too much calcium in the blood). [1]
Chelation (EDTA) is the most common treatment, sometimes combined with laser smoothing. [1]
The procedure is outpatient under local anesthesia, with about two weeks of eye protection afterward. [1]
The outlook is good for most people, but only if the underlying condition causing the calcium problem is treated. [1]
What the research says
EDTA chelation relieves symptoms in nearly all patients and improves vision in about a third. In a review of 54 patients (65 eyes) treated with EDTA chelation, 98% of those assessed (44 of 45) reported partial or complete symptom relief, and 33.3% of eyes (17) gained two or more lines of vision at one month. Calcium returned in 17.8% of eyes (10 of 56), most often in eyes with uveitis (3 of 5). (Najjar et al., Am J Ophthalmol, 2004) [2]
The calcium can come back, but repeat treatment is uncommon. Among 89 cases analyzed after EDTA chelation, visual acuity was maintained or improved in 79.8%. Localized recurrence occurred in 28.1% of eyes, yet only four cases (4.5% overall) needed repeat chelation. The most common identified underlying cause was long-term topical glaucoma therapy (27%), while 36% of cases were idiopathic. (Al-Hity et al., Eye, 2018) [3]
Laser smoothing without EDTA also improved vision in a small series. In 15 eyes of 9 patients (mean age 80), a modified transepithelial laser treatment (phototherapeutic keratectomy) done without EDTA improved average visual acuity from 0.68 to 0.22 logMAR at two months, and no repeat procedure was needed. The study is small and retrospective, so larger trials are still needed. (Shah & Nanavaty, J Clin Med, 2024) [4]
What Is Band Keratopathy?
Band keratopathy is a disease of the cornea of your eye. Keratopathy is a term for many conditions that affect your cornea. Your cornea is normally a clear dome. If you have band keratopathy, you have calcium deposits in some layers of your cornea. [1]
Calcium, in the form of calcium salts, collects into a belt shape that typically starts on the outside of your cornea (peripheral) and moves toward the middle (center). [1] The deposits collect as your cornea breaks down. This can happen if you have an eye disease or an illness, like an immune system disorder, that affects your entire body. [1]
You may also see it called band-shaped keratopathy (BSK), corneal band keratopathy, or calcific band keratopathy. [1]
How Does Band Keratopathy Affect the Eye?
Band keratopathy affects your cornea, which is normally clear and transparent. The calcium buildup makes it murky and dull. [1]
When the deposits get thick enough, they can scratch your eyes. That's why you may feel band keratopathy before you see it. [1] Over time, this condition can cause low vision. [1]
The calcium is normally located in the area of your eye that's visible to other people when your eyes are open, which is why a careful eye exam can spot the white-gray band early. [1]
What Are the Symptoms of Band Keratopathy?
Signs and symptoms of band keratopathy include:
Symptom | Description |
Blurred vision | Vision becomes hazy or unclear as the cornea clouds |
Eye pain | Can occur if some of the deposits break off and scrape your eye |
Gritty feeling | Eye irritation, like having sand or grit in your eye, called foreign body sensation |
Light intolerance | Discomfort in light, known as photophobia |
Red eye | The eye may appear red and irritated |
Visible change | Your provider will see a white-gray band, possibly with spots that look like holes, during a slit lamp eye exam |
What Causes Band Keratopathy?
You can get band keratopathy when the calcium levels in your body are out of balance. [1] Many conditions can cause it, including diseases that affect only the eye and diseases that affect your whole body.
Eye issues that can cause band keratopathy
Eye disease | What it is |
Glaucoma | Optic nerve damage; can cause blindness |
Keratoconjunctivitis | Inflammation of two parts of the eye: the cornea and the conjunctiva |
Uveitis | A group of diseases that cause red, swollen, and painful eyes; can cause blindness if not treated |
Phthisis bulbi | A serious condition of eye damage, also known as end-stage eye |
Eye injury | Can happen in accidents or falls |
Immune system disorders that can cause band keratopathy
Disorder | What it is |
Juvenile idiopathic arthritis | An autoimmune disease that can affect any joint in your body |
Sarcoidosis | An inflammatory disease that commonly affects the lungs but can affect several organs |
Discoid lupus | Causes round patches of thick and inflamed skin on your face or ears |
How hypercalcemia causes band keratopathy
You can have hypercalcemia (too much calcium in your blood) because of other issues, including:
Cause | What it is |
Hyperparathyroidism | One or more of your four parathyroid glands secrete too much parathyroid hormone |
Toxic vitamin D levels | Excessively high levels of vitamin D in your body |
Paget's disease | Bones break down and regrow too quickly and too often |
Other diseases that can cause band keratopathy
Condition | What it is |
Gout | A type of inflammatory arthritis related to uric acid crystals |
Multiple myeloma | A rare type of blood cancer; treatment can slow it but not cure it |
Ichthyosis | A skin disease with more than 20 types |
End-stage kidney disease | Kidney failure, when the kidneys no longer filter your blood |
Chemical exposure | Exposure to certain chemicals, including some medications |
How Is Band Keratopathy Diagnosed?
If you have symptoms, you may start with a primary care doctor or go right to an eye care specialist. They'll begin by asking about your medical history and symptoms to find the cause of the calcific band keratopathy and to rule out other diseases. [1]
Diagnostic step | What it involves |
Medical history review | Questions about symptoms and past conditions to find the cause and rule out other diseases |
Blood tests | Levels of calcium, phosphorus, hormones, and blood urea nitrogen and creatinine (kidney function tests) |
Thorough eye exam | Including a slit lamp examination to spot the white-gray band across the cornea |
How Is Band Keratopathy Treated?
Chelation is the most common treatment. [1] Chelation is a method of getting minerals or metals to bind to another substance, which allows your body to remove the bonded material. [1]
Treatment step | What happens |
EDTA application | Providers remove calcium deposits by applying ethylene-diamine-tetra-acetic acid (EDTA) |
Laser smoothing (therapeutic keratectomy) | A laser gets rid of any remaining calcium pieces and smooths the treated area |
Outpatient procedure | Done under local anesthesia, so you go home the same day |
Eye protection | Special protection for about two weeks: an amniotic membrane graft or a bandage contact lens (a soft contact lens) |
If you have band keratopathy because of an underlying condition, providers will treat the underlying condition so you don't develop more calcium deposits. [1]
What Can I Expect With Band Keratopathy?
For most people with band keratopathy, the prognosis is good, as long as the underlying condition is treated. [1]
It's not enough just to remove the calcium deposits. Deposits can happen again if you don't correct the problem that causes the calcium issues. [1] That's why treating the root cause matters just as much as clearing the band.
Can Band Keratopathy Be Prevented?
You may be able to reduce your risk of developing band keratopathy by managing your overall health and your eye health:
Prevention habit | How it helps |
Managing chronic conditions | Keep high blood pressure, high cholesterol, and diabetes under control |
Eating healthy foods | Supports overall and eye health |
Getting regular activity | Helps maintain balanced body chemistry and health |
Reaching a healthy weight | Reduces strain from chronic conditions |
Regular checkups | Routine medical and eye care appointments catch problems early |
When Should I See My Healthcare Provider?
It's important to pay attention to your eyes and the rest of your body. If you notice that something isn't quite right, like your vision has decreased or you have eye irritation that won't go away, call your eye care provider. The sooner you get help, the better the outcome is likely to be. [1]
If you have certain eye diseases, immune system disorders, or hypercalcemia, ask your provider about your risk of developing band keratopathy. Regular appointments with an eye care provider contribute to keeping your eyes healthy.
Questions to ask your provider
Question | Why it helps |
What is causing my calcium deposits? | Identifies the underlying condition to treat |
Which treatment do you recommend for me? | Gets you on a clear plan |
What should I expect during recovery? | Prepares you for the two-week protection period |
How do we prevent the deposits from coming back? | Addresses the root calcium problem |
Do I need to see a specialist? | Helps if the case involves complex underlying conditions |
Conclusion
Band keratopathy is a cornea disease where calcium deposits collect in layers of the cornea, turning the normally clear dome murky and dull. [1] The deposits form a belt that usually starts at the outer edge and moves toward the center, and they tend to build up as the cornea breaks down, whether from an eye disease like glaucoma or uveitis, an immune system disorder like juvenile idiopathic arthritis or sarcoidosis, or a calcium-balance problem like hypercalcemia. [1]
Because thick deposits can break off and scratch the eye, you may feel band keratopathy before you see it: eye pain, a gritty foreign-body sensation, light sensitivity, redness, and blurred vision, with a white-gray band visible on exam. [1] The most common treatment, chelation with EDTA, sometimes followed by laser smoothing, is done outpatient under local anesthesia, with about two weeks of eye protection afterward. [1] For most people the prognosis is good, but only if the underlying condition driving the calcium problem is treated; otherwise the deposits can come back. [1] Managing chronic conditions, eating well, staying active, and keeping regular eye appointments all help protect your cornea. [1]
Take the next step in understanding your health. If you create eye health education materials, Rinnit's library of infographic templates can help you turn topics like corneal disease, cataracts, and dry eye into clear, visual guides for your audience.
Frequently Asked Questions
What is band keratopathy?
Band keratopathy is calcium deposits that collect in some layers of the cornea of your eye. The cornea is normally a clear dome, but the calcium buildup makes it murky and dull. [1] It's also called calcific band keratopathy, band-shaped keratopathy (BSK), or corneal band keratopathy. [1]
What does the calcium buildup look like?
Calcium collects into a belt shape that typically starts on the outside of the cornea and moves toward the center. [1] Your provider can see a white-gray band, possibly with spots that look like holes, during a slit lamp eye exam. [1] The calcium is normally located in the area of your eye visible to other people when your eyes are open. [1]
Can I feel band keratopathy before I see it?
Yes. When the deposits get thick enough, they can scratch your eyes, so you may feel the condition before you see it. Deposits that break off can cause pain and irritation. Over time, the condition can cause low vision. [1]
What causes band keratopathy?
Band keratopathy develops when calcium levels in your body are out of balance. Causes include eye diseases (glaucoma, keratoconjunctivitis, uveitis, phthisis bulbi, eye injury), immune system disorders (juvenile idiopathic arthritis, sarcoidosis, discoid lupus), hypercalcemia causes (hyperparathyroidism, toxic vitamin D levels, Paget's disease), and other conditions like gout, multiple myeloma, ichthyosis, end-stage kidney disease, and exposure to certain chemicals or medications. [1]
What are the symptoms?
Common symptoms include blurred vision, eye pain (if deposits break off and scrape the eye), eye irritation or a sandy, gritty feeling (foreign body sensation), intolerance to light (photophobia), a red eye, and a visible change in how the eye looks. [1]
How is band keratopathy diagnosed?
A provider reviews your medical history and symptoms to find the cause and rule out other diseases. Blood tests check calcium, phosphorus, hormones, and blood urea nitrogen and creatinine (kidney function tests). An eye care provider performs a thorough eye exam that usually includes a slit lamp examination. [1]
What is chelation treatment?
Chelation is the most common treatment for band keratopathy. It's a method of getting minerals or metals to bind to another substance so your body can remove the bonded material. Providers apply ethylene-diamine-tetra-acetic acid (EDTA) to remove the calcium deposits from your eye. [1]
What is therapeutic keratectomy?
Therapeutic keratectomy is the part of treatment where a provider uses a laser to get rid of any remaining pieces of calcium and smooth the treated area of your eye. [1]
Is the treatment done in a hospital?
Generally, the procedure is done as an outpatient procedure under local anesthesia, so you can go home the same day. [1]
What happens after treatment?
Your eye needs special protection for about two weeks after the procedure. Your provider may place an amniotic membrane graft or give you a bandage contact lens (a soft contact lens). Both options offer protection. [1]
What is the outlook?
For most people, the prognosis is good as long as the underlying condition is treated. Removing the deposits alone isn't enough, because deposits can happen again if you don't correct the problem causing the calcium imbalance. [1]
Can band keratopathy be prevented?
You may reduce your risk by managing chronic conditions like high blood pressure, high cholesterol, and diabetes, eating healthy foods, getting regular activity, maintaining a healthy weight, and having regular medical checkups and eye care appointments. [1]
When should I see a provider?
Call your eye care provider if your vision has decreased or you have eye irritation that won't go away. The sooner you get help, the better the outcome is likely to be. [1] If you have eye diseases, immune system disorders, or hypercalcemia, ask your provider about your risk of developing band keratopathy. [1]
Related Reading
Glaucoma: The Silent Threat to Vision, and How Early Treatment Can Protect Your Sight
Uveitis: Symptoms, Causes, and Treatment — What Eye Inflammation Means for Your Vision
Hypercalcemia: Symptoms, Causes & Treatment — A Complete Guide
Living with Low Vision: A Guide to Management and Rehabilitation
Juvenile Idiopathic Arthritis (JIA): Symptoms, Types, Causes, Diagnosis & Treatment — Complete Guide
Sarcoidosis: Complete Guide to the Condition That Forms Granulomas Throughout the Body
American Academy of Ophthalmology EyeWiki: Calcific Band Keratopathy
References
Cleveland Clinic. Band Keratopathy. Cleveland Clinic Health Library. Last updated March 13, 2023. Accessed October 15, 2026. https://my.clevelandclinic.org/health/diseases/24827-band-keratopathy
Najjar DM, Cohen EJ, Rapuano CJ, et al. EDTA chelation for calcific band keratopathy: results and long-term follow-up. Am J Ophthalmol. 2004;137(6):1056-1064. PMID: 15183790. https://doi.org/10.1016/j.ajo.2004.01.036
Al-Hity A, Ramaesh K, Lockington D. EDTA chelation for symptomatic band keratopathy: results and recurrence. Eye (Lond). 2018;32(1):26-31. PMID: 29192681. https://doi.org/10.1038/eye.2017.264
Shah RP, Nanavaty MA. Modified transepithelial phototherapeutic keratectomy for band keratopathy. J Clin Med. 2024;13(19):5717. PMID: 39407777. https://doi.org/10.3390/jcm13195717
Medical disclaimer
The information provided in this article is for educational purposes only and is not intended as medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. If your vision decreases or eye irritation does not go away, contact an eye care provider promptly.
Comments