Irvine–Gass syndrome, pseudophakic cystoid macular edema or postcataract CME is one of the most common causes of visual loss after cataract surgery.

[11] After cataract surgery, patients with diabetes mellitus are generally acknowledged to have an increased risk of macular edema.

[12] A prior history of retinal vein occlusion was the only significant preoperative risk factor in a large retrospective series of 1659 consecutive cataract surgeries.

Intravitreal administration of corticosteroids and anti-vascular endothelial growth factor agents may be considered if this approach proves to be ineffective.

Pars plana vitrectomy may be an option for eyes with persistent pseudophakic cystoid macular edema and vitreomacular traction.