Ophthalmic Research Group, School of Life and Health Sciences, Aston University, Birmingham, B4 7ET, UK.
Ophthalmic Physiol Opt. 2010 Jul;30(4):371-8. doi: 10.1111/j.1475-1313.2010.00749.x.
Despite numerous investigations, the aetiology and mechanism of accommodation and presbyopia remains equivocal. Using Gaussian first-order ray tracing calculations, we examine the contribution that ocular axial distances make to the accommodation response. Further, the influence of age and ametropia are also considered. The data show that all changes in axial distances during accommodation reduce the accommodation response, with the reduction in anterior chamber depth contributing most to this overall attenuation. Although the total power loss due to the changes in axial distances remained constant with increasing age, hyperopes exhibited less accommodation than myopes. The study, therefore, enhances our understanding of biometric accommodative changes and demonstrates the utility of vergence analysis in the assessment of accommodation.
尽管进行了大量的研究，但调节和老视的病因和机制仍然存在争议。我们使用高斯一阶光线追踪计算，研究了眼球轴向距离对调节反应的贡献。此外，还考虑了年龄和屈光不正的影响。数据表明，调节过程中所有轴向距离的变化都会降低调节反应，前房深度的减少对这种整体衰减的贡献最大。尽管由于轴向距离的变化导致的总光焦度损失随着年龄的增加而保持不变，但远视眼的调节能力比近视眼差。因此，该研究增强了我们对生物测量调节变化的理解，并展示了聚散分析在评估调节中的实用性。
