Eye Health

12 January 2016

Kids with eye tumours face long-term problems

Compared to a control group of adults, retinoblastoma survivors were more likely to have various types of health problems.

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Some survivors of childhood cancers that affect vision may face increased risk for long-term health and economic problems, two new studies suggest.

Various types of health problems

The studies, published online in the journal Cancer, provide new insight that could help improve patient care and follow-up, the researchers say.

One study included 470 adult survivors of retinoblastoma who were followed for an average of 42 years. Retinoblastoma, the most common eye tumour of young children, can occur in one or both eyes. Most patients live for many years after treatment.

Read: Retinoblastoma

Compared to a control group of adults who never had the cancer, retinoblastoma survivors were more likely to have various types of health problems, including second cancers, the study found.

This increased risk was highest among those who had retinoblastoma in both eyes. These patients are known to have a genetic risk for new cancers.

But some good news emerged, too: When the researchers excluded vision problems and new cancers, survivors who had retinoblastoma in one eye were not at higher risk for chronic health problems than the control group.

Read: Revolution in eye cancer treatment 

Significantly, most retinoblastoma survivors rated their health as good to excellent, suggesting these patients "maintain comparatively normal health many years after completing therapy", Dr Danielle Novetsky Friedman, of Memorial Sloan Kettering Cancer Centre in New York City, and colleagues said in a journal news release.

Unemployed, unmarried and living with a caregiver

Lifelong screening of these patients will enable timely treatment of any health problems they may experience, the researchers added.

The other study included 1,233 adult survivors of childhood brain tumours. Of those patients, more than 22 percent suffered vision loss.

Read: Can more time outside keep our kids' eyes healthy?

There was no link detected between vision loss and mental health, but survivors who were blind in both eyes were at increased risk of being unemployed, unmarried and living with a caregiver.

However, the researchers saw no clear connection between less severe vision loss such as blindness in one eye and increased risk of such situations, Dr Peter de Blank, of Case Western Reserve University School of Medicine in Cleveland, and colleagues said in the news release.

They noted that chemotherapy improves vision in about one-third of children with brain tumours involving visual pathways, and stabilises vision in another third. However, they said vision will deteriorate in another third of patients despite intense treatment. 

Read more: 

11-year-old boy goes blind from laser light  

Eyecare myths you probably believed 

New glasses 'correct' colour blindness for some

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Optometrist

Megan Goodman qualified as an optometrist from the University of Johannesburg and is currently practising at Tygerberg Academic Hospital in Cape Town. She has recently completed a Masters degree in Clinical Epidemiology at Stellenbosch University. She has a keen interest in ocular pathology and evidence based medicine as well as contact lenses.

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