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Cataracts and eye changes after a transplant | CION Cancer Clinics
Yes, cataract is one of the most common late effects of total body irradiation. The lens of the eye slowly turns cloudy, often years after the transplant, and long steroid courses can do the same. It is treatable with routine cataract surgery once you are fit for it. This page explains the signs, the eye checks to ask for, and the eye changes that need a doctor the same day. At CION Cancer Clinics, our haematology team assesses whether a transplant or CAR-T fits your situation and coordinates care with qualified centres.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Why do cataracts follow total body irradiation?
- Which eye changes can follow a transplant?
- How are your eyes checked and treated after a transplant?
- What do families believe about eyes after transplant?
- What do the words on the eye report mean?
- What can this page not tell you?
- Common questions about cataracts after transplant
The short answer
Why do cataracts follow total body irradiation?
Yes, a cataract is one of the most common late effects of total body irradiation, often called TBI. The lens inside the eye is very sensitive to radiation, and it slowly turns cloudy over the years that follow. It is treatable with routine surgery, so it rarely costs anyone their sight for good.
What a cataract actually is
The lens sits behind the coloured part of your eye and focuses light. Normally it is clear. A cataract is a cloudy patch in that lens. Vision becomes blurred or misty, bright lights start to glare, and colours can look faded. The change is usually slow, so many people notice it first when driving at night or reading small print.
Why it appears years later, not straight away
Radiation damages the cells at the edge of the lens that keep making new lens fibres. Those cells carry on working, but the fibres they make are no longer laid down neatly. The cloudiness builds up gradually. That is why a cataract often shows up well after you have left the transplant unit, at a time when you may think the hard part is over.
Radiation is not the only cause
Long courses of steroid tablets, often used to control graft-versus-host disease, can cause the same kind of cataract. Some people had both. Others never had TBI at all and still develop one from steroids alone.
A cataract does not mean the blood cancer has come back. It is a side effect of the treatment, not a sign of the disease.More than cataract
Which eye changes can follow a transplant?
Cataract is the most familiar, but it is not the only one. Each has a different cause and a different fix, so tell your team exactly what you notice.
Cataract
Slow misting of vision, glare from headlights and faded colours. It comes from radiation, steroids or both.
More likely if you had
- Total body irradiation
- Long steroid courses
- Both together
Dry, gritty eyes
Chronic graft-versus-host disease can attack the glands that make tears. Eyes feel sandy, burn, or water oddly. Your team may call this ocular GVHD. It needs its own treatment, and eye drops alone are often not enough.
Raised eye pressure
Steroids can push up the pressure inside the eye in some people. You feel nothing until damage to the nerve of the eye is done, which is why a pressure check is part of an eye review.
Eye infections
While your immune system is still weak, viruses and fungi can reach the eye. A red, painful eye or sudden floaters needs to be seen quickly, not watched.
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When an eye problem cannot wait
Sudden loss of vision, a painful red eye, a shower of new floaters, flashing lights, or a dark curtain across your sight needs an eye doctor the same day. This matters even more while you are still taking medicines that lower your immunity. Go to the nearest eye casualty or emergency department, say you have had a transplant, and take your medicine list. Do not wait for your next routine visit, and do not start old eye drops from home first.
Checks and treatment
How are your eyes checked and treated after a transplant?
A baseline eye review
Many transplant teams suggest an eye check within the first year, even if you notice nothing. It gives a starting picture to compare against later. Ask your haematologist whether this has been arranged.
Regular follow-up checks
After TBI or long steroid use, eye reviews continue at intervals your team sets. The eye doctor tests how well you see, looks at the lens with a slit lamp (a microscope with a bright light), and measures eye pressure.
Deciding when to operate
A cataract is not removed just because it is there. Surgery is planned when blurred sight starts getting in the way of reading, work, cooking or moving about safely. The eye surgeon also needs your blood counts and your immunity to be settled enough.
Cataract surgery
The cloudy lens is removed and replaced with a clear artificial lens. It is usually a day procedure under local anaesthetic, one eye at a time. Tell the eye surgeon about your transplant, any GVHD and every medicine you take.
Commonly believed
What do families believe about eyes after transplant?
"Blurred vision after transplant means the cancer is back."
Almost always it does not. Blurring is far more often a cataract, dry eyes, a change in glasses or a side effect of steroids. It still deserves an eye check, but it is not a reason to assume the worst about the blood disease.
"You must wait until the cataract is 'ripe' before surgery."
This is an old idea from earlier surgical methods. Today the decision rests on how much the cataract affects your daily life and whether you are fit for surgery, not on how thick it has become.
"Someone who has had a transplant cannot have eye surgery."
Many transplant survivors have cataract surgery safely. The timing needs care, and the eye surgeon and haematologist should talk to each other. Having had a transplant is a reason to plan, not a reason to be refused.
"Herbal drops or eye exercises will clear the cloudiness."
No drop, diet or exercise has been shown to reverse a cataract. Putting unprescribed drops into eyes that may already be dry or infected can make things worse. Surgery is the only treatment that removes a cataract.
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On your eye report
What do the words on the eye report mean?
- Posterior subcapsular cataract
- Cloudiness at the back of the lens. This is the type most linked to radiation and steroids, and it tends to cause glare early.
- Visual acuity
- How clearly you read letters on the chart. It is written as a pair of numbers and compared between visits.
- Intraocular pressure
- The pressure of fluid inside the eye. A raised reading may need drops to protect the nerve of the eye.
- Schirmer test
- A thin paper strip placed under the lower lid to measure how many tears you make. A low result points towards dry eye.
- Ocular GVHD
- Graft-versus-host disease affecting the eye surface and tear glands, causing dryness, burning and redness.
- IOL
- Intraocular lens. The clear artificial lens placed during cataract surgery.
Being straight with you
What can this page not tell you?
This page cannot tell you whether you will develop a cataract, or when. That depends on how the radiation was given, how long you took steroids, whether you have chronic GVHD, and your age. Some people who had TBI keep clear lenses for many years. Others need surgery much sooner.
Who surgery may need to wait for
Surgery may be put off if your blood counts are still low, if you are fighting an infection, or if eye GVHD is active and the surface of the eye is inflamed. In those cases the eye is usually settled first. That wait can feel frustrating, but it lowers the chance of problems after the operation.
What the CION team does
CION's haematology team reviews your transplant history, your medicines and your GVHD status, and writes a clear summary for the eye surgeon. We help you reach an eye specialist who is used to seeing transplant survivors. Ask them how often your eyes should be checked, and what to do if your sight changes between visits.
Never stop or change a steroid or immune-lowering medicine because you are worried about your eyes. Raise it with your haematologist, who sets the plan.Questions we are asked
Common questions about cataracts after transplant
Will everyone who had TBI get a cataract?
No. It is common, but not certain. The risk is higher when the radiation was given in one large dose rather than split across several smaller ones, and higher again if you also needed long steroid treatment. Your transplant summary records how TBI was given, so ask for a copy and share it with your eye doctor.
I had a transplant without radiation. Can I still get a cataract?
Yes. Long courses of steroid tablets, used for graft-versus-host disease, can cause cataracts on their own. Age and diabetes play a part too. If your vision is slowly misting over, an eye check is worthwhile whatever conditioning treatment you received before the transplant.
Can a child who had TBI get cataracts?
Yes, and children may not say their sight has changed. Watch for sitting very close to the television, squinting, dropping marks at school or avoiding bright light. Regular eye reviews are part of long-term follow-up for children after TBI. Ask the paediatric team who arranges them and how often.
Is cataract surgery safe after a bone marrow transplant?
For most survivors, yes, once counts and immunity have recovered enough and any eye GVHD is under control. The eye surgeon should know about your transplant and medicines before the date is fixed. Your haematologist and eye surgeon agreeing on timing together is the safest route.
Will I need glasses after cataract surgery?
Often, at least for reading. The artificial lens is usually set for clear distance vision. Some people choose lenses that help with near vision too, but these do not suit every eye, especially one that is very dry. Discuss your daily needs with the surgeon before the lens is chosen.
My eyes feel dry and gritty. Is that a cataract?
Probably not. A cataract blurs vision but does not usually cause grittiness or burning. Those feelings point more towards dry eye, which after transplant is often linked to chronic GVHD. It needs its own assessment, so mention it to your haematologist and ask for an eye review.
Can I drive with a cataract?
That depends on how well you can see, not on the diagnosis itself. Glare from oncoming headlights at night is often the first real problem. If you struggle to read number plates or feel unsafe on the road, stop driving until your eye doctor has checked your vision and advised you.
Is cataract surgery covered by Aarogyasri or insurance?
Cataract surgery is covered by many government schemes and cashless insurance policies, including Aarogyasri, CGHS, ECHS, EHS and PM-JAY, but rules and empanelled hospitals change. Check your current entitlement with the scheme or insurer before booking, and keep your transplant records ready for the paperwork.
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Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- National Cancer Institute — Late Effects of Treatment for Childhood Cancer (PDQ)
- NHS — Cataracts
- National Cancer Institute — Stem Cell Transplants in Cancer Treatment
- Leukemia & Lymphoma Society — Stem Cell Transplantation
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Long-Term Follow-Up Schedule After TransplantWhere eye checks fit among your other late-effect reviewsHormone and Thyroid Problems After TransplantAnother late effect of total body irradiationBone Health After TransplantSteroids affect bones as well as eyesLife After TransplantThe full guide to recovery after a transplant
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