AIM: To evaluate the relationship between anterior chamber depth(ACD)and age, crystalline lens power, corneal refractive power, and axial length(AL).

METHODS: Totally 44 children(88 eyes)with refractive error who underwent retinoscopy with cycloplegia, to be measured spherical equivalent refractive error. AL, corneal K and ACD were measured by a noncontact optical biometry(ZEISS IOL-Master). The crystalline lens power was calculated by using the SRK formula. Linear Correlation and Regression were used to evaluate the correlation between the ACD and the other optical parameters.

RESULTS:Totally 44 subjects, 88 eyes, average 9.04±2.39 years, spherical equivalent(SE)-3.50～+8.75D. No significant differences were found among the 3 groups about ACD. Neither between male and female. There was a negative correlation between ACD and age(r=-0.323), ACD/AL and age(r=-0.516), ACD and lens power(r=-0.392), corneal K and age(r=-0.461). While a positive correlation between lens power and age(r=0.414). A week positive correlation was found between ACD and corneal K(r=0.295).

CONCLUSION: When aging, the subjects' anterior chamber becomes more and more shallow. The ratio of ACD and AL decreases. The power of the combination lens, which is formed by cornea, crystalline lens, aqueous humor and anterior chamber, decreases. The length of vitreous chamber increases. All the above meet the requirements of emmetropization for children.