Study Identifies Risk Factors for Postsurgical Pupillary Changes in DR Patients

Pupillary function alterations are linked with autonomic neuropathy, which is associated with poor glycemic control and diabetes duration. Robust blood glucose control should be encouraged for optimal patient outcomes. Photo: Michael Trottini, OD, and Michael DelGiodice, OD. Click image to enlarge. Ocular comorbidities can complicate the outcomes of routine eye surgeries, particularly in patients with diabetic retinopathy (DR). These individuals are at increased risk for postoperative complications following cataract extraction and intraocular lens implantation. Pupil changes in particular can hinder visual recovery, affect inflammation and IOP, and make follow-up exams challenging since these abnormalities may impair mydriasis and limit access to the posterior segment for DR monitoring.As specific risk factors for postoperative pupil changes in DR patients aren’t well known, researchers undertook a retrospective study to characterize them. Here are the key findings from their BMC Ophthalmology paper:In the 162-patient study, pupillary changes occurred in 33 cases (20.4%). In diabetic patients, the article explains, alterations in pupillary function are frequently associated with autonomic neuropathy, which correlates with prolonged diabetes duration and poor glycemic control. “Research indicates that diabetic patients often exhibit limited mydriasis, which can increase the technical challenges of cataract surgery and elevate the risk of complications, such as posterior capsule rupture and vitreous loss,” the researchers wrote in their paper. “Additionally, postoperative pupillary changes can impact inflammation, intraocular pressure and accessibility to the posterior segment, thereby influencing the progression of DR.”Regression analysis identified the following significant risk factors for postoperative pupillary changes:longer diabetes duration higher lens nucleus grade greater DR severity intraoperative posterior capsule ruptureBased on these findings, the researchers recommended “enhanced communication and collaboration between ophthalmologists and surgeons” and “standardization of intraoperative procedures and medication protocols, with particular attention to pupil management.”“Close monitoring of postoperative pupil changes is vital to ensure timely follow-up care and optimized patient outcomes,” they wrote. Click here for the journal source.  Yi G, Yu H. Risk factors for pupil changes in patients with diabetic retinopathy and cataract after phacoemulsification with intraocular lens implantation. BCM Ophthalmol 2025:25:252. [Epub ahead of print].