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The ocular response analyser (ORA) is a non-contact (air puff) tonometer that does not require topical anaesthesia and provides additional information on the biomechanical properties of the cornea. It uses an air pulse to deform the cornea into a slight concavity.
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Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.
Capacitive styluses work by distorting the screen’s electrostatic field. [9] Screens that receive input from a capacitive stylus (as well as human fingers) can't register pressure applied by the pen; tilting of the pen; and can't distinguish between a capacitive stylus, your finger, or a resting palm as input - it will register all of these ...
US Treasury Department check signing machine. Operated by J.L. Summers in 1918. An autopen (or signing machine) is a device used for the automatic signing of a signature.. Prominent individuals may be asked to provide their signatures many times a day, such as celebrities receiving requests for autographs, or politicians signing documents and correspondence in their official capacit
It's not every day you have a bottle of leftover wine just sitting around waiting to be sipped. But when the occasion does occur, you might be wondering: How long does wine last after opening? Don ...
Mortgage and refinance rates for Dec. 19, 2024: Average 30-year, 15-year rates move higher after Fed's quarter-point cut
Fortunately, there are several things you can do to prevent a blister. Make sure your shoes and clothing fit well and don’t rub your skin, Dr. Lizarzaburu says. “Anything that’s causing ...