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This study compared the clinical and optical performance of two diffractive trifocal intraocular lenses (IOLs) with identical designs but different light distribution profiles. A total of 54 eyes from 48 patients undergoing cataract surgery received either the Gemetric™ (GM; Hoya Surgical Optics, Singapore) or the Gemetric™ Plus (GMP; Hoya Surgical Optics, Singapore) IOLs. The GM group included 30 patients (33 eyes), and the GMP group included 18 patients (21 eyes). Preoperative demographics were comparable between the two groups. At 3 months postoperatively, both IOLs provided excellent uncorrected and corrected distance visual acuity with similar refractive predictability. Intermediate vision at 66 cm was significantly better with the GM (p=0.022), whereas near vision at 33 cm was superior with the GMP (p=0.023). These findings show that modifying light distribution in otherwise identical trifocal IOLs yields distinct benefits, allowing surgeons to tailor IOL choice to patients’ needs.