ISS036-E-006520 (5 June 2013) --- NASA astronaut Karen Nyberg, Expedition 36 flight engineer, conducts an ocular health exam on herself in the Destiny laboratory of the Earth-orbiting International Space Station. NASA astronaut Chris Cassidy, flight engineer, nearby but out of frame, assisted in the testing, part of a suite of eye exams carried out over a two-day period on various crew members to gather information on intraocular pressure and eye anatomy.
Photographer Karen Nyberg
Date June 5, 2013