To Study the Changes Under Different Accommodation of Anterior Eye in People of Different Ages and 3D Crystal Reconstruction.
Status: Recruiting
Location: See all (2) locations...
Study Type: Observational
SUMMARY
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.
Eligibility
Participation Requirements
Sex: All
Minimum Age: 20
Maximum Age: 80
Healthy Volunteers: t
View:
• · Patients with astigmatism ≤-1.50D and best corrected visual acuity ≥4.9
Locations
Other Locations
China
Second Affiliated Hospital, Zhejiang University School of Medicine
RECRUITING
Hangzhou
Second Affiliated Hospital, Zhejiang University School of Medicine
NOT_YET_RECRUITING
Hangzhou
Contact Information
Primary
Wen Xu, Phd
xuwen2003@zju.edu.cn
+86-13858185223
Time Frame
Start Date: 2024-11-27
Estimated Completion Date: 2028-12-31
Participants
Target number of participants: 120
Treatments
Group A was 20-40 years old
They were divided into three groups according to age: A, B, and C.Group A was 20-40 years old.
Group B was 40-60 years old
They were divided into three groups according to age: A, B, and C. Group B was 40-60 years old.
Group C was 60-80 years old
They were divided into three groups according to age: A, B, and C. Group C was 60-80 years old.
Related Therapeutic Areas
Sponsors
Leads: Second Affiliated Hospital, School of Medicine, Zhejiang University