Aims - To investigate the relation between pulse amplitude (PA), pulsatile ocular blood flow (POBF), and sex and hormonal status. Methods - Measurements of POBF and PA were obtained by ocular blood flow tonography in 76 healthy subjects: 32 males and 44 females (age range 17-77 years). Females were divided into two age groups: group 1 (premenopausal) 17-42 years, and group 2 (post-menopausal) 55 years old and over. Two groups of age matched males served as controls. Results - Premenopausal females demonstrated a significantly higher rate of POBF and PA than age matched males and post-menopausal females. Conclusion - Sex and hormonal status were shown to influence choroidal circulation.
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