Researchers discovered that a temperature difference equal to or above 0.55oC between the forehead and the eye is highly predictive of COVID-19 screening for infection and more importantly, it helps discriminate between people with and without the infection when there are mild symptoms and a history of close contact with an infected individual.
Infrared thermography is a non-contact imaging modality that is relatively cheap and easy to use. The results question the current COVID-19 screening approach and pave the way for adopting better strategies that can easily be deployed in a wide manner.
However, caution interpreting the results must be taken since this was a pilot study. Another potential limitation that needs to be addressed before a wider implementation of the method is ethical concerns on the imaging of the face of individuals, but this can be overcome by blurring the images and automating the method.