Mahmut OZKAN, Huseyin BAYRAMLAR, Remzi KARADAG
Van Medical Journal - 2026;33(4):518-524
Introduction: To investigate whether there is a correlation between accommodative amplitude and intraocular pressure (IOP) in presbyopic individuals. Materials and Methods: In this cross-sectional prospective study, the right eyes of 41 healthy volunteers aged 42-44 years (Group 1: early presbyopes) and 42 healthy volunteers aged 48-50 years (Group 2: mid-term presbyopes) were evaluated. Accommodative amplitude was measured subjectively using the 'push-up' and 'minus lens' tests. Intraocular pressure was measured using an air-puff computerized tonometer and corrected for central corneal thickness (CCT). Correlation analyses were performed to evaluate the relationship between corrected IOP values and accommodative amplitudes. Results: As expected, the accommodative amplitude in the younger group (Group 1) was significantly higher than that in the older group (Group 2). No statistically significant difference was found between the two groups in terms of CCT and corrected IOP. No significant correlation was found between corrected IOP and accommodative amplitudes measured by two different methods in either group or in the overall study population (n=83). Conclusion: No relationship was found between intraocular pressure and accommodative amplitude in healthy presbyopic individuals. Further studies are needed to clarify the potential existence of a relationship in presbyopic eyes with glaucoma or ocular hypertension.
