The syndrome, known as visual impairment intracranial pressure (VIIP), has been reported in nearly two-thirds of space explorers after long periods spent aboard the International Space Station (ISS).
ðə sˈɪndɹoʊm, nˈoʊn æz vˈɪʒuːəl ɪmpˈɛɹmənt ˌɪntɹəkɹˈeɪnɪəl pɹˈɛʃɚ vˈɪɪp, hˈæzbiːn ɹᵻpˈoːɹɾᵻd ɪn nˌɪɹli tˈuːθˈɜːdz ʌv spˈeɪs ɛksplˈoːɹɚz ˈæftɚ lˈɔŋ pˈiəɹɪədz spˈɛnt ɐbˈoːɹd ðɪ ˌɪntɚnˈæʃənəl spˈeɪs stˈeɪʃən ˌaɪˌɛsˈɛs.