Self-tonometry under microgravity conditions.
During a space mission flown in microgravity early changes in intraocular pressure due to the fluid shift effect in microgravity were analyzed with an automatic self-tonometer. In total, 13 pressure readings per eye were obtained during the mission. The first pressure readings 16 min after reaching microgravity revealed a 92% rise in intraocular pressure compared to the daytime-correlated baseline data on earth followed by an adaptation phase lasting for several hours. Diurnal pressure profiles during the mission showed no relevant difference in altitude and amplitude.
Draeger
J
J
Abteilung für Ophthalmologie, Universitäts-Krankenhaus Eppendorf, Hamburg.
Schwartz
R
R
Groenhoff
S
S
Stern
C
C
D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D016353:Self-Examination; D013026:Space Flight; D014065:Tonometry, Ocular; D014893:Weightlessness