A man went blind in one eye after having an orgasm.
The man, an English 29-year-old, lost his his vision temporarily the morning after after enjoying a particularly powerful climax.
Slightly dismayed by the negative impact to what is normally supposed to be an enjoyable occasion, the man went to hospital to see whether he might one day again see his lover with two adoring eyes.
Thankfully, the patient soon learned that his sight would be restored, but it was, understandably, a frightening 24 hours.
The unlikely occurrence was part of a wider study into how Brits are getting more adventurous in the bedroom - and so sexually related accidents are on the up.
The male who suffered a partial loss of vision documented by the British Medical Journal . Apparently, upon admitting himself to hospital, he had to tell doctors that he had participated in "vigorous sexual intercourse".
Upon examination, medics discovered a small hemorrhage in his left eye that was blocking part of his vision.
Doctors revealed that the man had probably held his breath and strained his abdominal muscles during his bedroom session, which is turn caused pressure to build up around his eyeball, bursting a blood vessel.
The BMJ case study said the condition resolved itself spontaneously and the man's sight returned.
It is thought that some men hold their breath during sex to prevent premature ejaculation. Others practise controlled breathing to intensify the sensation orgasms afford.