Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Mobile phone test can reveal vision problems in time

11.02.2016

Apps that test visual function at home can discover deterioration of the eye’s macula lutea long before traditional vision tests. A doctoral thesis at Sahlgrenska Academy explored this issue.

Age related changes to the eye’s macula lutea, so-called macular degeneration, is a common cause of severe vision loss in persons over 60. However, existing drugs that are given as injections into the eye can slow visual impairment in the so-called “wet” type.

And, as the disease is chronic, it requires continuous treatment. Decisional for treatment success, is that flare-ups with new wet changes are discovered at an early stage, before any permanent damage is done to the macular cells.

Long waiting period
However, the wait time for treatment is long and during the waiting period, the patient risks losing visual function that is irreversible.

Researchers at Sahlgrenska Academy have now developed two new vision tests for mobile telephones. The apps that were developed under the supervision of Researcher Lars Frisén, make it possible to test vision function at home and then send the test results to an eye clinic for analysis. A thesis that evaluated the vision tests showed that they would be able to replace a portion of the controls that are currently done in eye clinics.

Better than traditional examinations
“Our studies show that the apps are better than traditional examinations done at the clinic. It opens the possibility for the apps to be able to replace many patient visits and in this way, free up healthcare resources and reduce wait times,” says doctoral candidate Christina Winther.

Both tests are self administered. The first, with the product name of MultiBit, uses numbers built up of small bright dots. The numbers appear very briefly on the screen and then disappear. Then it is up to the patient to repeat those numbers out loud. Varying the number of dots, varies the level of difficulty. The answers are taped and compared to a facet, where the results can then be sent to the clinic.

Reading test
The second app, called Celego, works according to the same principle, but is a reading test that shows both letters and numbers in continuously changing new combinations and sizes.

“Being able to read better after treatment is what many patients feel is most valuable to their daily life. Currently, we are not investigating this in a controlled way, but this provides a simple and standardized way to examine the patients’ reading capabilities and speed,” says Christina Winther.

Link to the thesis: http://hdl.handle.net/2077/40885

FACTS
Macular degeneration damages the function in the central visual field, which affects such things as reading ability and visual acuity. The condition is treated by drugs injected into the eye in connection with a simpler surgical procedure.

Contact:
Christina Winther, Doctoral Candidate at Sahlgrenska Academy, University of Gothenburg
christina.winther@vgregion.se

Lars Frisén, Researcher, Sahlgrenska Academy, University of Gothenburg
lars.frisen@telia.com

Weitere Informationen:

http://sahlgrenska.gu.se/english/research/news-article/?languageId=100001&co...

Calle Björned | idw - Informationsdienst Wissenschaft

More articles from Health and Medicine:

nachricht Using fragment-based approaches to discover new antibiotics
21.06.2018 | SLAS (Society for Laboratory Automation and Screening)

nachricht Scientists learn more about how gene linked to autism affects brain
19.06.2018 | Cincinnati Children's Hospital Medical Center

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>