Albert Richardson came up with the butter churn. Originally in. 1891 who wanted to make butter had to do so by hand in a bowl. Yet, when Albert Richardsonâs invention was a device that consisted. of a large wooden cylinder container with a plunger-like handle which. moved up and down. Doing this, the movement caused oily parts of. cream or milk to become separated from the watery parts. This simplified. the process of making butter.
It may take 1-2 days to recover after LASIK eye surgery. Most patients can return to work the next day after LASIK procedure.
How long has LASIK been performed? The excimer laser has been used for over 15 years and received FDA approval in 1998. Eye surgeons have been creating a protective flap of tissue for over 30 years. These two techniques were first combined in 1991 to create a new form of refractive surgery known as LASIK.