Clinical Research Directory

Inclusion Criteria: * Myopic or myopic astigmatism patients aged 18 to 45 years. * Transparent ocular media, absence of ocular diseases such as corneal leucoma, cataract, etc. * Round pupils with normal light reflex, absence of dyscoria, corectopia, significant persistent pupillary membrane, or absence of the pupil. * Absence of severe psychological or psychiatric disorders, ability to cooperate with examinations and questionnaire completion. * Subject agrees to participate in this clinical study and cooperate with examinations and related procedures. Exclusion Criteria: * Opacities of the ocular media, such as corneal leucoma, cataract, etc. * Pupil deformation, displacement, significant persistent pupillary membrane, or absence of the pupil. * Severe psychological or psychiatric disorders. * Concurrent diagnosis of other ocular diseases (e.g., glaucoma, corneal opacity, uveitis, etc.). * History of ocular surgery or trauma. * Nystagmus or inability to cooperate.