Over the last decade, flight surgeons and scientists at NASA have seen a pattern of vision problems in astronauts on long-duration space missions.
ˌoʊvɚ ðə lˈæst dˈɛkeɪd, flˈaɪt sˈɜːdʒənz ænd sˈaɪəntɪsts æt nˈæsɐ hæv sˈiːn ɐ pˈætɚn ʌv vˈɪʒən pɹˈɑːbləmz ɪn ˈæstɹənˌɔːts ˌɔn lˈɔŋdʊɹɹˈeɪʃən spˈeɪs mˈɪʃənz.