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NCT Number: NCT04666870

Axis Length and Its Relationship With Refractive Error in Chinese University Students

To investigate the relationship between axis length (AL) and refractive error. eyes of low hyperopia to emmetropia subjects, comprising eyes with moderate to high myopia (-11.00D ≤ SE ≤ -4.00D) were analyzed in this cross-sectional study. Cycloplegic refractive error was measured with the autorefractor, AL was measured with the IOL master. Association between AL and refractive error were evaluated by linear regression analysis. The mean of AL and its correlation with SE, sex, and age were evaluated.

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Key information

Conditions

Refractive Error - Myopia Axial Eye Diseases Hyperopia Refractive Errors

Age range

22 year–26 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Shanghai Guanghua Integrated Traditional Chinese and Western Medicine Hospital

Shanghai, Shanghai Municipality, 200052, China

About this study

To investigate the relationship between axis length (AL) and refractive error (RE). 894 eyes with low hyperopia to emmetropia (-0.50D ≤ spherical equivalent (SE) ≤ +2.00D), comprising 1007 eyes with moderate to high myopia (-11.00D ≤ SE ≤ -4.00D) were analyzed in this study. Cycloplegic RE was measured with the autorefractor, AL was measured with the IOL master. Association between AL and refractive error were evaluated by linear regression analysis. The mean of AL and its correlation with SE, sex, and age were evaluated.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

with moderate to high myopia (SE ≤ -4.00D) without myopia (-0.50D ≤ spherical power ≤ +2.00D) no concurrent eye disease best corrected visual acuity is 1.0

Exclusion criteria

significant systemic illnesses congenital myopia, media opacity uveitis glaucoma intraocular surgery refractive surgery neurologic diseases retinal disease

Treatment and study plan

myopia or not myopia

Other

visual acuity, IOL master biometry, the anterior segment with slit lamp, dilated fundus examination and refraction.

Primary outcomes

  1. Axis length

    Time frame: from baseline at 6 months

    Axis length change from baseline at 6 months

  2. Refractive Error

    Time frame: from baseline at 6 months

    Refractive Error change from baseline at 6 months

Sponsors and collaborators

Lead sponsor

Wang Hongxia

Other

Collaborators

  • Tianjin Eye Hospital

Registry information

Official study title

Shanghai Guanghua Integrated Traditional Chinese and Western Medicine Hospital, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Dec 14, 2020
Registry last updated
Dec 14, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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