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Tear break-up time (TBUT) also known as tear film break-up time (TFBUT) is the time taken for the first dry spot to appear on the cornea after a complete blink. TFBUT measurement is an easy and fast method used to assess the stability of tear film. It is a standard diagnostic procedure in the dry eye clinics. [1]
A tear breakup time (TBUT) test measures the time it takes for tears to break up in the eye. [4] The tear breakup time can be determined after placing a drop of fluorescein in the cul-de-sac. [14] [30] A tear protein analysis test measures the lysozyme contained within tears. In tears, lysozyme accounts for approximately 20 to 40 percent of ...
Artificial tears work by adding similar lubricating elements that natural tears contain. [17] This helps thicken and stabilize the pre-corneal tear film, prolonging tear film breakup time, and allowing for tears to properly protect the surface of the eyes. [17] Most artificial tears do not require a prescription and can be used as often as needed.
Break reminder – Some tools are reminders to take breaks based on factors like elapsed time, how much or how intensely a person is working, natural rest patterns, and times of day. Activity mitigation – Some tools reduce the amount of typing or mouse clicking (e.g. speech recognition tools, automatic clicking tools, hotkey/macro tools).
built-up edge in which material being machined builds up on the cutting edge. Some materials (notably aluminium and copper ) have a tendency to anneal themselves to the cutting edge of a tool. It occurs most frequently on softer metals, with a lower melting point.
It is used in a legal context for such areas as warranty contracts from manufacturers, which usually stipulate that damage from wear and tear will not be covered. [1] Wear and tear is a form of depreciation, which is assumed to occur even when an item is used competently and with care and proper maintenance. [2]
Tear resistance (or tear strength) is a measure of how well a material can withstand the effects of tearing. [1] It is a useful engineering measurement for a wide variety of materials by many different test methods .
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