correlation between intracranial and intraocular pressures

purpose: to evaluated the correlation between intracranial pressure (icp) and intraocular pressure (iop). methods: this interventional case series included 90 patients undergoing lumbar puncture (lp) for neurologist evaluation. iop was measured before and 1 hour after the lp by using goldmann tono-meter. patients were compared into two groups: patients with normal icp (<20 cmh2o) and patients with high icp (≥20 cmh2o). results: patients included 29 male and 61 female subjects with mean age of 32.9±11.4 (range 13-62) years. thirty-three patients had normal icp and 57 patients had high icp. there was a significant correlation between icp and iop such that 71.9% of the high icp group had high iop (>21 mmhg) and 28.1% of them had normal iop (p<0.001). significant decrease in iop occurred after lp in the high icp group (p< 0.001). conclusions: it seems that there is a significant correlation between iop and icp.