Retinal disease can have serious consequences, and some people with it will have no visual impairment at all.
A new study from the University of Michigan and New York University suggests that retinal disease is more common than previously thought, affecting more than 50 million people worldwide.
The study is published in the journal JAMA Neurology.
The researchers took a look at a nationwide database of about 5.5 million people who had had retinal neurodegenerative diseases and then looked at the ages of people who also had a diagnosis of retinal neovus (RTN) and retinal tufts (RTUs).
The researchers found that RTNs and RTUs are associated with the same age at onset of symptoms.
RTNs cause the eye to swell and the brain to lose tissue and cells that help the eye maintain proper function.
RTUs cause the brain and retina to atrophy and the eye eventually starts to lose its visual acuity.
Researchers also found that people who have both RTNs AND RTNs have lower rates of vision loss and lower rates and visual impairment than those with RTN only.
However, they also found something surprising.
The rate of retinitis pigmentosa (RP) was associated with age at diagnosis, which was also higher in people who already had RTNs.
This is in line with previous studies showing that older age and RTNs are linked to a higher risk of RPN.
This finding was also consistent with earlier studies showing higher rates of RPs in older people.
In the study, researchers looked at people who were diagnosed with retinal tauopathy, a rare condition that causes the eye’s retinal pigment epithelium to degenerate and become covered with scar tissue.
These people had higher rates and higher levels of RNP and RTP, and their RPN was also more severe than that of people with RTNs, as was their RTP.
But in people with RPN, the researchers found a lower rate of RTP and RPN than in people without RPN and with RTs.
“The findings suggest that older people with a diagnosis that is associated with RTn have higher rates than those without such a diagnosis and RNP,” study co-author Michael D. Stumpf, an assistant professor of ophthalmology and head of the department of medicine at the University College London, said in a statement.
“We also found a relationship between RPNs and age at RTN diagnosis, as well as an inverse relationship between age and RPP.
A link between age at and RTN diagnosis and age of retina loss may also be explained by the higher prevalence of RTNs in younger age groups, but more work is needed to clarify this relationship.”
This isn’t the first time this has been seen.
In 2013, the U.S. National Eye Institute found that the prevalence of RNs and RPT was significantly higher in older age groups than in younger ones, with the oldest age group having the highest rates.
But the researchers didn’t see any significant difference between the two groups.
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