Pulsatile Ocular Blood Flow in Healthy Koreans

PURPOSE: To determine the normal reference range of pulsatile ocular blood flow (POBF) values in healthy Korean subjects and to find out the factors that may affect them. METHODS: A total of 280 eyes of 280 normal subjects were included in this study. Best corrected visual acuity (BCVA), intraocular pressure (IOP), axial length, POBF, systemic blood pressure, and pulse rate were measured. The mean, standard deviation, range, and the 5th and 95th percentiles of POBF were calculated, and the influences of various parameters to POBF were determined by multiple regression analyses. RESULTS: The mean POBF value was 766.0+/-221.6 microl/min in men and 1021.1+/-249.5 microl/min in women. The 5th and 95th percentiles for POBF values were 486.0 microl/min and 1140.0 microl/min in men and 672.0 microl/min and 1458.0 microl/min in women. The POBF values were significantly influenced by gender, mean blood pressure, pulse rate, and axial length. CONCLUSIONS: Even though the POBF values were influenced by gender, BP, and axial length, we could define the normal reference range of POBF in healthy Koreans.ope

Israel’s SIGINT Oversight Ecosystem: COVID-19 Secret Location Tracking as a Test Case

By mid-March 2020, Israel had experienced the first wave of the COVID-19 pandemic. Within a fortnight, confirmed coronavirus cases surged from half a dozen to 178 cases. In response to the challenge of identifying potential carriers, the government tasked the Israeli Security Agency (the ISA, or Shin Bet) with tracing the routes of confirmed coronavirus patients via cellphone location tracking and identifying individuals with whom the patients had been in close contact. Israel\u27s ISA communications metadata collection measures have been shrouded in veil of secrecy. The debate – in parliament and in court – regarding the use of the country\u27s secret service counterterrorism mass surveillance measures to contain the spread of the pandemic is a rare opportunity to assess whether the institutional oversight mechanisms on SIGINT collection activities are sufficient and effective. The paper will (1) describe the existing SIGINT oversight regime in Israel; (2) describe the SIGINT oversight ecosystem’s response to COVID-19 location tracking in Israel; and, (3) in light of existing literature, provide an analysis of that response