Accommodation is defined as a dynamic change in the overall refractive power of the eye during near fixation. Despite extensive investigations, the exact nature of human accommodation remains controversial. And recent alternative theories question the original concept of accommodation.Different experts have put forward different hypotheses. The age-related changes that underlie presbyopia are also not fully understood.Because of these unanswered questions, the topic of regulation and presbyopia remains a focus of research.
None
Patients with other systemic diseases
Patients with a history of eye surgery
Patients with intraocular lens or aphakia
Patients with strabismus and amblyopia
Age 20-80 years old; Astigmatism ≤-1.50D; Best corrected visual acuity ≥4.9;Excluding other systemic underlying diseases; Have a history of eye surgery; Patients with intraocular lens or aphakia; Patients with strabismus and amblyopia; Pregnant or lactating women; People with mental disorders or neurological diseases who cannot cooperate with the examination;
Cohort
Prospective
Not listed
Central corneal thickness changes during accommodation
Central corneal thickness CCT(μm)
peripheral corneal thickness changes during accommodation
peripheral corneal thickness(μm)
anterior chamber depth changes during accommodation
anterior chamber depth ACD(mm)
anterior chamber Angle Angle changes during accommodation
anterior chamber Angle Angle ACA(°)
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