ArticleDocumenta ophthalmologica. Advances in ophthalmology2026
Improvement of dynamic pupillary function after cataract surgery in eyes with pseudoexfoliation syndrome: a six-month longitudinal pupillometry study.
Article in Documenta ophthalmologica. Advances in ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeImpaired pupillary dynamics are a well-recognized feature of pseudoexfoliation syndrome (PXF), yet little is known about how cataract surgery influences postoperative iris function in these eyes. This study aimed to determine the longitudinal effects of cataract surgery on static pupil diameters and dilation velocity in eyes with pseudoexfoliation syndrome compared with age-matched controls.
methodsThis longitudinal study included 166 eyes of 166 patients undergoing cataract surgery, comprising 91 eyes with pseudoexfoliation syndrome and 75 control eyes without pseudoexfoliation. Pupillary parameters were measured preoperatively and at six months postoperatively using automated pupillometry. Static pupil diameters were assessed under scotopic (0.04 lx), mesopic (4 lx), and photopic (40 lx) illumination conditions. Dynamic pupillary function was evaluated by measuring dilation velocity (DVel, mm/s) following a standardized light stimulus. Postoperative changes (Δ) were calculated as the difference between preoperative and postoperative measurements.
resultsStatic pupil diameters remained stable in the PXF group across all illumination conditions (p > 0.05). In contrast, the control group demonstrated a significant reduction in scotopic pupil diameter after surgery (p = 0.008), while mesopic and photopic diameters remained unchanged. The most notable finding was observed in pupillary kinetics: dilation velocity significantly increased in the PXF group from 0.13 ± 0.04 mm/s to 0.17 ± 0.05 mm/s (p < 0.001), whereas no significant change was detected in the control group. Between-group comparison showed a significantly greater improvement in dilation velocity in PXF eyes (p < 0.001). Cataract morphology was not associated with postoperative pupillary changes.
conclusionThese findings suggest that cataract surgery may be associated with measurable changes in dynamic pupillary behavior in PXF eyes, particularly in dilation velocity, while static pupil diameter remains largely unchanged.
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