The latest craze sweeping through Japan is ‘oculolinctus’ – eyeball licking as an expression of affection between young lovers.

However, it has led to a surge in cases of eye infections and can even cause blindness, doctors have warned.

The bizarre fetish, which is also known as ‘worming’, was uncovered by the Japanese website, Naver Matome, which revealed that videos of eyeball licking have been posted on YouTube. …

However, the practice is not without its dangers – it can transmit the bacteria which causes conjunctivitis, Medical Daily reports.