Ebola survivors have a ‘unique’ retinal scar

 

Ebola Survivor In Sierra Leone With A Blinding Cataract Undergoing An Anterior Chamber Tap  

Researchers from the University of Liverpool have conducted a study of Ebola survivors to determine if the virus has any specific effects on the back on the eye using an ultra widefield retinal camera.

 

To find out more about the broad-ranging symptoms of Post Ebola Syndrome (PES), a clinical research team led by HPRU EZI members Dr Janet Scott and Dr Calum Semple assessed survivors discharged from the Ebola Treatment Unit at the 34th Regiment Military Hospital in Freetown, Sierra Leone.

 

Two years on from the Ebola outbreak in West Africa, and many Ebola survivors are still presenting with symptoms of post-Ebola syndrome (PES), including joint and muscle pains and psychiatric and neurological problems.

Hiding viruses

Viruses, like Ebola, can stay hidden in our bodies by exploiting a vulnerability in our immune systems. This vulnerability is called “immune privilege,” and comes from an old observation that foreign tissue transplanted into certain parts of the body don’t elicit the usual immune response. This includes the brain, spinal cord, and eyes. Scientists believe this is because the brain, spinal cord, and eyes are simply too delicate and important to withstand the inflammation that’s typical of an immune response.

An eye team led by Dr Paul Steptoe, compared eye examinations of PES sufferers in Sierra Leone and the control population. A total of 82 Ebola survivors who had previously reported ocular symptoms and 105 unaffected controls from civilian and military personnel underwent ophthalmic examination, including widefield retinal imaging.

The results of the research, which has been published in the Emerging Infectious Diseases journal, shows that around 15% of Ebola survivors examined have a retinal scar that appears specific to the disease.

This work was supported by The Dowager Countess Eleanor Peel Trust, Bayer Global Ophthalmology Awards Programme, Wellcome Trust ERAES Programme and the NIHR Health Protection Research Unit in Emerging and Zoonotic Infections at the University of Liverpool.

The full paper, entitled ‘Novel Retinal Lesion in Ebola Survivors, Sierra Leone, 2016’, can be accessed via Emerging Infectious Diseases journal.

Posted on: 17/05/2017