What is the difference between LASIK and LASEK??

I used to have very good eyesight, 1.5 and 2.0, but while working at my job inspecting products at the company

I keep looking at small things up close every day, and at some point, my eyesight gradually started to decline. ㅠ

Even though distant objects are hard to see clearly, I could still see nearby ones well, but now I have to bring them right in front of my eyes.

I can't see very well ㅠ I want to get LASIK or LASEK, but I don't really understand the difference between the two.

Is there anyone who can explain it so I can understand? Haha