article_snippet: The research gave one volunteer the ability to see more than 164ft (50 metres) in almost total darkness for 'several hours'.
article_snippet: Within an hour ‘ had noticeably improved in low-light conditions.
article_snippet: Within an hour, Mr Licina was able to see in darkness - for several hours.
article_snippet: After testing, Mr Licina wore sunglasses while Mr Licina slept, and Mr Licina eyesight in the morning seemed to return to normal.
article_snippet: After testing, the team said that Mr Licina wore sunglasses while Mr Licina slept, and Mr Licina eyesight in the morning appeared to return to normal.
article_snippet: As of 20 days, there have been no noticeable effects,’ Mr Licina wore sunglasses while he slept, and his eyesight in the morning appeared to return to normal said.
article_snippet: While Mr Licina wore sunglasses while he slept, and his eyesight in the morning appeared to return to normal note that more testing is needed, the initial results suggest that the technique can provide low light amplification in the human eye.
highlights_snippet: A test subject was able to see in darkness 'for several hours'
  Ability wore off the following day, with 'no noticeable effects' after 20 days .
  