31yrs ago I worked in an office, starting at a computer screen for 8hrs a day, and suddenly started getting Moffat like headaches that lasted from lunchtime Monday until lunchtime on Saturday.
After about 3 weeks of this, I decided I needed to get my eyes tested because I thought I was straining my eyes with the computer.
The optician did my test and said there was something a bit strange about one eye, so asked a colleague to come and have a look. They diagnosed a retinal detachment and sent me straight to the local eye hospital.
No-one could work out why I had this detachment but I was told I needed (actual) surgery (with a scalpel, not laser) to fix it, pretty much immediately, otherwise I would probably go blind (this was a Friday afternoon and I had the surgery on the Monday morning).
Now, the retina can detach anywhere, and mine was under the outer edge of my lower eyelid, which affects the sight high up, kind of above the nose. I'm pretty tall (5'11½"), so don't very often use that area of sight, whereas someone shorter would use it a lot more often, so I didn't notice the deterioration in my vision, just the horrendous headaches.
A year later, I was diagnosed with MS, and finally discovered that it had been the cause of the retinal detachment.
Almost 15 years after my detachment, my son was having similar headaches, so I took him to the optician, just in case he had anything similar, and they found that he had a posterior retinal tear. I thought he might need surgery, but they said there was nothing they could do except annual checks to make sure it didn't get any worse. They still check it every year (16yrs on), but up to now, it seems to be (very slowly) healing itself.
So, I guess I'd say that it depends on the type of detachment, exactly where it's positioned, and the degree of detachment will all determine whether or not surgery is required, and the type of surgery (laser or scalpel).