Longitudinal observation of intraocular pressure variations with acute altitude changes

Figure 4 Linear graph showing vital and hematological parameters changes in low altitude and high altitude groups after exposure to higher altitude. A: Oxygen saturation decreased in both groups after exposure to higher altitude; B, C: Systolic blood pressure and diastolic blood pressure in the low altitude (LA) group dropped after exposure to 3750 m above sea level (ASL); D: Pulse rate increased in both groups after exposure to 3750 m ASL; E: Erythrocytes only increased after 1 d exposure to 3750 m ASL in the LA group; F: Hemoglobin increased after flying to 3750 m ASL in both groups. ^aP < 0.05: Statistically significant; NS: Not significant; SpO₂: Oxygen saturation; IOP: Intraocular pressure; SBP: Systolic blood pressure; DBP: Diastolic blood pressure; LA: Low altitude; HA: High altitude; VHA: Very high altitude.