Prescription for astigmatic ametropia revisited

ABSTRACT The approach to any refractive condition of the eye with regular astigmatism is more complicated than that for myopia or hyperopia alone. It requires familiarity with the complex images collectively identified as Sturm’s conoid. Fortunately, only three of those play a critical role in the interpretation of ametropia with astigmatism. This manuscript discusses a prescription strategy for ametropias associated with regular astigmatism evolved from those three key images.

摘要 针对伴规则散光（regular astigmatism）的各类眼屈光状态的诊疗方案，其复杂度远超单纯近视（myopia）或远视（hyperopia）的诊疗方案。该方案要求临床从业者熟悉以施氏光锥（Sturm’s conoid）为统称的复杂光学成像现象。所幸，其中仅有三种核心成像在伴散光的屈光不正（ametropia）的判读中发挥关键作用。本文探讨了基于上述三种关键成像、针对伴规则散光的屈光不正的验光配镜策略。