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.
For the vast majority of patients, dry eye poses little concern, especially since symptoms typically abate within 3 to 6 months. The most common symptom associated with dry eye after LASIK is fluctuation in vision, especially within the first 6 weeks. Other symptoms can vary dramatically and include but are not limited to, irritation, pain, redness, foreign body sensation, slow healing, regression, and worsening astigmatism (1, 12).