This study analyzed the distribution and characteristics of ocular biometric parameters among a large Chinese population aged 3–114 years. |
The aging of the global population emphasizes the importance of assessing ocular biometry parameters in older generations, as these parameters may indicate the development of clinical ocular diseases. |
A key strength of the present study is its determination of ocular biometric parameters in subjects aged > 100 years, a group that has not been studied previously. |
This study reveals the mean values of biometric parameters, including axial length, anterior chamber depth, corneal keratometry, and keratometric astigmatism, among different age groups and genders of the Chinese population. |
Significant inter-gender and inter-age differences were observed in the biometric parameters, including axial length, keratometry, keratometric astigmatism, and anterior chamber depth. |
These results contribute to a greater understanding of the inter-gender and inter-age differences in the potential prevalence of ocular diseases. |
Introduction
Methods
Study Design
Measurements
Inclusion and Exclusion Criteria
Statistical Analysis
Results
Distribution and Characteristics of Ocular Biometric Parameters of the Study Population
Mean ± SD (95% CI) | Median (IQR) | Skewness | Kurtosis | p-value (gender) | |
---|---|---|---|---|---|
AL (mm) | 24.61 ± 2.36 (24.60, 24.63) | 24.02 (23.06–25.54) | 1.462 | 2.815 | < 0.0001 |
K (D) | 43.76 ± 1.77 (43.75, 43.77) | 43.81 (42.72–44.89) | −0.633 | 2.756 | < 0.0001 |
ACD (mm) | 3.30 ± 0.51 (3.30, 3.31) | 3.36 (2.95–3.68) | −0.148 | 0.097 | < 0.0001 |
KA | 1.19 ± 0.93 (1.18, 1.19) | 0.97 (0.58–1.54) | 2.984 | 21.14 | < 0.0001 |
Inter-Gender Differences of Ocular Biometric Parameters in Different Age Groups
Age group | Number of participants | AL (mm) (mean ± SD, 95% CI) | ACD (mm) (mean ± SD, 95% CI) | K (D) (mean ± SD, 95% CI) | KA (D) (mean ± SD, 95% CI) |
---|---|---|---|---|---|
Group A | 1891 | 23.49 ± 1.58 (23.42, 23.57) | 3.55 ± 0.35 (3.54, 3.57) | 43.42 ± 1.62 (43.35, 43.50) | 1.77 ± 0.99 (1.73, 1.82) |
Group B | 4972 | 24.89 ± 1.34 (24.85 24.92) | 3.71 ± 0.28 (3.71, 3.72) | 42.93 ± 1.68 (42.88, 42.98) | 1.60 ± 0.87 (1.58, 1.63) |
Group C | 2588 | 25.44 ± 2.03 (25.36, 25.52) | 3.69 ± 0.32 (3.67, 3.70) | 43.33 ± 1.70 (43.27, 43.40) | 1.60 ± 0.97 (1.56, 1.63) |
Group D | 1888 | 25.51 ± 2.32 (25.41, 25.61) | 3.65 ± 0.35 (3.64, 3.67) | 43.53 ± 1.87 (43.44, 43.61) | 1.54 ± 1.07 (1.49, 1.58) |
Group E | 3663 | 25.83 ± 3.13 (25.73, 25.93) | 3.47 ± 0.45 (3.46, 3.49) | 43.45 ± 2.16 (43.38, 43.52) | 1.19 ± 0.96 (1.16, 1.22) |
Group F | 6566 | 24.99 ± 3.07 (24.92, 25.07) | 3.28 ± 0.48 (3.27, 3.30) | 43.87 ± 1.89 (43.82, 43.92) | 1.00 ± 0.84 (0.98, 1.02) |
Group G | 8079 | 24.33 ± 2.55 (24.28, 24.39) | 3.14 ± 0.48 (3.13, 3.15) | 44.09 ± 1.64 (44.05, 44.12) | 0.91 ± 0.85 (0.89, 0.93) |
Group H | 9249 | 23.97 ± 1.98 (23.92, 24.01) | 3.01 ± 0.48 (3.00, 3.02) | 44.21 ± 1.55 (44.17, 44.24) | 0.98 ± 0.81 (0.96, 1.00) |
Group I | 3946 | 23.74 ± 1.55 (23.69, 23.79) | 2.92 ± 0.48 (2.90, 2.93) | 44.17 ± 1.53 (44.13, 44.22) | 1.11 ± 0.80 (1.09, 1.14) |
Group J | 710 | 23.71 ± 1.37 (23.61, 23.81) | 2.99 ± 0.51 (2.95, 3.03) | 43.92 ± 1.63 (43.80, 44.04) | 1.24 ± 0.88 (1.17, 1.30) |
p-Values between groups | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | |
Total | 43,552 | 24.56 ± 2.41 (24.54, 24.58) | 3.28 ± 0.52 (3.27, 3.28) | 43.80 ± 1.77 (43.78, 43.82) | 1.17 ± 0.92 (1.16, 1.18) |
Age group | Number of participants | AL (mm) (mean ± SD, 95% CI) | ACD (mm) (mean ± SD, 95% CI) | K (D) (mean ± SD, 95% CI) | KA (D) (mean ± SD, 95% CI) |
---|---|---|---|---|---|
Group A | 3300 | 24.15 ± 1.51 (24.10, 24.21) | 3.57 ± 0.31 (3.56, 3.58) | 43.25 ± 1.60 (43.19, 43.30) | 1.56 ± 0.89 (1.53, 1.59) |
Group B | 6236 | 25.16 ± 1.50 (25.12, 25.20) | 3.70 ± 0.27 (3.70, 3.71) | 42.94 ± 1.70 (42.90, 42.98) | 1.60 ± 0.92 (1.58, 1.63) |
Group C | 4092 | 25.97 ± 2.01 (25.91, 26.04) | 3.70 ± 0.31 (3.69, 3.71) | 43.56 ± 1.70 (43.51, 43.61) | 1.54 ± 1.04 (1.51, 1.57) |
Group D | 2212 | 25.91 ± 2.57 (25.80, 26.01) | 3.59 ± 0.39 (3.57, 3.61) | 43.54 ± 2.05 (43.45, 43.62) | 1.32 ± 0.98 (1.28, 1.36) |
Group E | 2562 | 25.31 ± 3.14 (25.19, 25.44) | 3.44 ± 0.45 (3.42, 3.45) | 43.46 ± 2.15 (43.38, 43.54) | 1.18 ± 0.95 (1.14, 1.21) |
Group F | 3573 | 24.89 ± 2.92 (24.79, 24.98) | 3.31 ± 0.46 (3.30, 3.33) | 43.76 ± 1.83 (43.70, 43.82) | 1.06 ± 0.84 (1.03, 1.08) |
Group G | 10,841 | 24.21 ± 2.39 (24.16, 24.25) | 3.12 ± 0.49 (3.12, 3.13) | 44.10 ± 1.61 (44.07, 44.13) | 0.92 ± 0.82 (0.90, 0.94) |
Group H | 7438 | 23.97 ± 2.01 (23.93, 24.02) | 3.02 ± 0.49 (3.01, 3.04) | 44.16 ± 1.59 (44.13, 44.20) | 1.01 ± 0.90 (0.99, 1.03) |
Group I | 1438 | 23.80 ± 1.56 (23.72, 23.88) | 2.97 ± 0.50 (2.94, 3.00) | 44.09 ± 1.59 (44.01, 44.17) | 1.16 ± 0.86 (1.12, 1.21) |
Group J | 526 | 23.73 ± 1.26 (23.62, 23.84) | 2.86 ± 0.44 (2.83, 2.90) | 44.17 ± 1.54 (44.04, 44.30) | 1.15 ± 0.81 (1.08, 1.22) |
p values between groups | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | |
Total | 42,218 | 24.67 ± 2.32 (24.65, 24.69) | 3.33 ± 0.51 (3.33, 3.34) | 43.72 ± 1.76 (43.71, 43.74) | 1.21 ± 0.94 (1.20, 1.21) |
Axial Length (AL)
Corneal Keratometry (K)
Anterior Chamber Depth (ACD)
Correlation of Ocular Biometric Parameters with Age in Males and females
AL | ACD | K | KA | |
---|---|---|---|---|
Age | −0.256** | − 0.551** | 0.215** | − 0.270** |
AL | – | 0.424**a | − 0.246**a | 0.081**a |
ACD | – | – | − 0.070**a | 0.025**a |
K | – | – | – | 0.110**a |
AL | ACD | K | KA | |
---|---|---|---|---|
Age | – 0.301** | – 0.546** | 0.234** | – 0.312** |
AL | – | 0.418**a | – 0.243**a | 0.090**a |
ACD | – | – | – 0.076**a | 0.044**a |
K | – | – | – | 0.116**a |