How often should i have my eye checked as i'm diagnosed with incomplete pvd in my right eye today? already had retinal detachment surgery in left eye.

On symptoms: If you had re-attachment surgery in the left eye, the retinal surgeon should have checked the right eye for risk. You have PVD in this eye and I am guessing the same retinal specialist made this diagnosis and found no detachment or risks. Given your young age, you probably should be checked every six months for a while but be alert for symptoms like light flashing and multiple floaters.

If symptomatic . . .: Vitreous detachment happens to all of us, eventually. The great majority of the time it does not cause problems. In the very small majority of patients it can cause a retinal tear or detachment. If you are experiencing symptoms such as flashing light or new floaters, you should see an eye doctor as soon as possible. If the vitreous detachment is "fresh" your doctor will determine how often.