Scientist Uses Retinal Scan to Diagnose Autism

Benny Zee, a scientist from the Chinese University of Hong Kong, demonstrates retinal eye scanning technology used for early detection of autism, during an interview with Reuters in Hong Kong, China 29 January, 2021. Reuters
Benny Zee, a scientist from the Chinese University of Hong Kong, demonstrates retinal eye scanning technology used for early detection of autism, during an interview with Reuters in Hong Kong, China 29 January, 2021. Reuters
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Scientist Uses Retinal Scan to Diagnose Autism

Benny Zee, a scientist from the Chinese University of Hong Kong, demonstrates retinal eye scanning technology used for early detection of autism, during an interview with Reuters in Hong Kong, China 29 January, 2021. Reuters
Benny Zee, a scientist from the Chinese University of Hong Kong, demonstrates retinal eye scanning technology used for early detection of autism, during an interview with Reuters in Hong Kong, China 29 January, 2021. Reuters

A Hong Kong scientist has developed a method to use artificial intelligence to scan retinas of children as young as six to detect early autism or the risk of autism and hopes to develop a commercial product this year.

Retinal eye scanning can help to improve early detection and treatment outcomes for children, said Benny Zee, a professor at the Chinese University of Hong Kong.

"The importance of starting early intervention is that they are still growing, they are still developing. So there is a bigger chance of success," Zee said.

His method uses a high-resolution camera with new computer software which analyzes a combination of factors including fiber layers and blood vessels in the eye.

The technology can be used to identify children at risk of autism and get them into treatment programs sooner, said Zee.

Seventy children were tested using the technology, 46 with autism and a control group of 24.

The technology was able to identify the children with autism 95.7 percent of the time. The average age tested was 13, with the youngest being six.

Zee's findings have been published in EClinicalMedicine, a peer-reviewed medical journal.

Autism specialists welcomed his findings but said there remained a huge stigma, with parents often reluctant to believe their children have autism even when there are clear signs.

Zee told Reuters that his research is intended to be a supplemental tool to a professional assessment by licensed healthcare professionals.



Croatia's Scientists Seek to Ward Off Threat to Posidonia Seagrass

Salema porgy swim near seagrass in the protected area of France's Porquerolles National Park ahead of the UN Ocean Conference on Friday, June 6, 2025. (AP Photo/Annika Hammerschlag)
Salema porgy swim near seagrass in the protected area of France's Porquerolles National Park ahead of the UN Ocean Conference on Friday, June 6, 2025. (AP Photo/Annika Hammerschlag)
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Croatia's Scientists Seek to Ward Off Threat to Posidonia Seagrass

Salema porgy swim near seagrass in the protected area of France's Porquerolles National Park ahead of the UN Ocean Conference on Friday, June 6, 2025. (AP Photo/Annika Hammerschlag)
Salema porgy swim near seagrass in the protected area of France's Porquerolles National Park ahead of the UN Ocean Conference on Friday, June 6, 2025. (AP Photo/Annika Hammerschlag)

At Croatia’s Dugi Otok island in the Adriatic Sea, scientists, demanding action to protect environmentally important meadows of seagrass, have been on a diving mission to assess the damage inflicted by human activity.

Named after Poseidon, the ancient Greek god of the sea, Posidonia oceanica, commonly known as Mediterranean tapeweed, provides food and shelter for fish, protects coasts from erosion, purifies sea water and can play a vital role in helping to tackle global warming.

A meadow of Posidonia can annually soak up to 15 times more carbon dioxide than a similar sized piece of the Amazon rainforest, scientific research has found.

But the scientists say much more needs to be done to protect it from tourist anchoring and from trawlers dragging fishing nets in the waters of the Adriatic Sea off Dugi Otok and the surrounding Kornati archipelago national park.

They have urged tougher regulations and fines for anyone breaching them.

Dominik Mihaljevic, a biologist at the national park, said the park had begun to install anchorages that would not harm the seagrass.

"Our ultimate goal is to completely prohibit anchoring at the 19 anchorage locations that are currently in use," Reuters quoted him as saying.

Matea Spika, a senior associate at Croatia’s Sunce environmental protection association, told Reuters Mediterranean Posidonia, endemic to the Mediterranean Sea, had declined by 30% in the last 30-to-40 years.

Apart from the issue of anchors and fishing nets, she said chemicals, excess nutrients from farms and cities, warmer waters due to climate change, and invasive species had caused further damage.

New ports and artificial beaches have also blocked sunlight essential for Posidonia’s growth.