LASEK (or laser-assisted subepithelial keratomileusis) is a laser vision correction procedure that is similar to both LASIK and PRK. Like LASIK, LASEK can also be used to treat farsightedness, nearsightedness or astigmatism. It is also a type of laser presbyopia surgery when it is used for the treatment of age-related nearsightedness.
Cool Facts About The Large Grey Mongoose. The largest species of Mongoose in Africa, the Large Grey Mongoose, also commonly known as the Egyptian Mongoose, grows to nearly 90cm long with a 40cm long tail.
Both the giant blue whale and the humongous fungus fit comfortably within this definition. So does the 6,615-ton (six-million-kilogram) colony of a male quaking aspen tree and his clones that covers 107 acres (43 hectares) of a Utah mountainside. And, at second glance, even those button mushrooms aren't so tiny. A large mushroom farm can produce as much as one million pounds (454 metric tons) of them in a year. The mushrooms that people grow in the mushroom houses&133;; they're nearly genetically identical from one grower to another, Smith says.