Had yag laser 4 months after cataract extraction two weeks ago . since then suffering periods of blurry vision. feels like something in eye.

Vitreous debris: When you do a yag capsulotomy you are removing part of the capsular bag that normally holds the lens in place. That membrane will usually fall into te back of the eye and out of sight. But sometimes it floats in the back of the eye and can occasionally cloud the vision. It still could get better. See your ophthalmologists and confirm what's happening.

Should see surgeon: Blurry vision after yag could range from mild (dry eye) to serious conditions (lens dislocation or other complication). You should let your surgeon know and probably be seen.