Multi-center Ocular Biological Parameters Study

Analysis of Eye Bioparametric Data of Chinese Population Based on Big Data

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04340635

Enrollment

20000

Registered

2020-04-09

Start date

2018-01-01

Completion date

2020-12-31

Last updated

2020-04-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cataract

Keywords

Corneal astigmatism, axial length (AL), anterior chamber depth (ACD), partial coherence interferometry

Brief summary

This study is a multi-center study, which collects data from multiple regions to obtain the general biological characteristics of the Chinese population. The formula for calculating the artificial lens power based on foreign populations is effectively modified based on the Chinese population.

Detailed description

①Relevant domestic studies on the biological characteristics of the eye are mainly limited to a certain city and region. Most of the studies that represent the biological characteristics of the general population in China and the differences in biological parameters at home and abroad are in the research process, or Semi-finished products. ②The investigators found in clinical observation that the eyeball biological data of the Chinese population may not be consistent with the foreign population. ③ This study is the first study of human eye biological parameters based on different regions of large-scale populations in China, which is of great significance for understanding the human eye structure in different regions of China.

Interventions

None listed

Study design

Observational model

CASE_ONLY

Time perspective

OTHER

Eligibility

Sex/Gender

ALL

Age

50 Years to No maximum

Inclusion criteria

* patients aged over 50 years

Exclusion criteria

* history of refractive surgery, * corneal diseases * ocular inflammation * trauma

Design outcomes

Primary

Measure	Time frame	Description
axial length (AL)	1 hour	Measured using the partial coherence laser interferometry (IOLMaster, Carl Zeiss Meditec, Germany)
anterior chamber depth (ACD)	1 hour	Measured using the partial coherence laser interferometry (IOLMaster, Carl Zeiss Meditec, Germany)
keratometric power (K)	1 hour	Measured using the partial coherence laser interferometry (IOLMaster, Carl Zeiss Meditec, Germany)
corneal astigmatism (CA)	1 hour	Measured using the partial coherence laser interferometry (IOLMaster, Carl Zeiss Meditec, Germany)

Countries

China

Contacts

Primary Contactxu chen

Francois.chenxu@gmail.com13601762646

Backup Contacthui liu

1009254042@qq.com18570638843

Outcome results