IntacsÂ® Eye Surgery. The IntacsÂ® eye surgery procedure usually requires only a one hour office visit. A preoperative exam will determine if a patient is able to undergo IntacsÂ® eye surgery as a treatment for myopia or keratoconus.ntacsÂ® Eye Surgery. The IntacsÂ® eye surgery procedure usually requires only a one hour office visit. A preoperative exam will determine if a patient is able to undergo IntacsÂ® eye surgery as a treatment for myopia or keratoconus.
The Summer Factor: Temperature. Temperature also affects density altitude. When you heat the air, the air molecules have more energy. And, when they have more energy, they spread farther apart. (You probably learned this in high school chemistry class...). When the air is warmer than standard, it's less dense and performance decreases.
Barometric pressure is the weight of the overlying air pressing down on the earth. It is also known as air pressure. Low barometric pressure means the overlying air is rising, whereas high pressure means the overlying air is sinking. Barometric pressure has important effects on water chemistry and weather conditions. It affects the amount of gas that can dissolve in water. More gas, such as oxygen, can dissolve in water under higher pressure when compared to lower air pressure. For instance, more oxygen is dissolved in water at sea level than at high altitudes. The pressure of the overlying air forces more gas into solution. As the overlying pressure decreases, gas is released from solution.