What is Eye Stroke? Anterior Ischemic Optic Neuropathy (AION) occurs when there is insufficient blood supply to the optic nerve, resulting in loss of vision. There are two types of AION: Nonarteritic Anterior Ischemic Optic Neuropathy (NAION) and Arteritic Anterior Ischemic Optic Neuropathy (AAION).
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An evaporative cooler (also swamp cooler, desert cooler and wet air cooler) is a device that cools air through the evaporation of water.Evaporative cooling differs from typical air conditioning systems which use vapor-compression or absorption refrigeration cycles.he cooling potential for evaporative cooling is dependent on the wet bulb depression, the difference between dry-bulb temperature and wet-bulb temperature. In arid climates, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling.