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Subfoveal choroidal thickness: the Beijing Eye Study.

Wen Bin Wei¹, Liang Xu, Jost B Jonas

¹Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China. wenbing_wei@yahoo.com.cn

|September 27, 2012

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Subfoveal choroidal thickness in elderly Chinese subjects decreases with age and myopia. Thicker choroids were associated with younger age, shorter axial length, male gender, and deeper anterior chamber depth.

Area of Science:

Ophthalmology
Retinal Research
Ocular Imaging

Background:

Subfoveal choroidal thickness (SFCT) is a key indicator of ocular health.
Understanding SFCT variations is crucial for diagnosing and managing retinal diseases.
Previous studies have explored SFCT in various populations, but data on adult Chinese subjects require further investigation.

Purpose of the Study:

To investigate subfoveal choroidal thickness (SFCT) in adult Chinese individuals.
To determine the correlation between SFCT and ocular biometric parameters, refractive error, and age.

Main Methods:

A population-based longitudinal study was conducted.
The Beijing Eye Study 2011 included 3468 participants aged 50-93 years.
Spectral-domain optical coherence tomography (SD-OCT) with enhanced depth imaging was used to measure SFCT.

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Main Results:

Mean SFCT was 253.8±107.4 μm in 3233 subjects.
SFCT decreased with increasing age (4.1 μm/year) and myopia (15 μm/diopter).
SFCT was associated with shorter axial length, male gender, deeper anterior chamber, and thicker lens.

Conclusions:

Mean SFCT in elderly Chinese subjects is approximately 254 μm.
SFCT exhibits a significant inverse relationship with age and myopia.
SFCT is influenced by ocular biometric parameters and may have functional implications related to visual acuity.