The Changes Under Different Accommodation of Anterior Eye and 3D Crystal Reconstruction.
Recruiting
Observational Study
Accommodation
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
Healthy Volunteers Welcome
You do not need to have the condition being studied to take part.
No Study Drug
Researchers observe your health over time — no experimental treatment is given.
At a Glance
- Age
- 20 – 80
- Sex
- Any
- Study type
- Observational
- Participants needed
- 120 (estimated)
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine · Other
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About This Trial
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…
Trial Locations
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Eligibility Criteria
Inclusion Criteria:
· Patients with astigmatism ≤-1.50D and best corrected visual acuity ≥4.9
Exclusion Criteria:
* Patients with other systemic diseases
* Patients with a history of eye surgery
* Patients with intraocular lens or aphakia
* Patients with strabismus and amblyopia
* Pregnant or lac…
Contacts