The initial study of morphological changes of human eyes before and after accommodation by MRI / 眼科

ABSTRACT

Objective To investigate the characteristics of the morphological changes of the lens and related structures of human eyes before and after accommodation by magnetic resonance imaging(MRI). Design Prospective case series. Participants Healthy volunteers. Methods Eleven eyes of 8 healthy volunteers were measured by MRI before and after accommodation. Main Outcome Measures Thickness and sectional area of lens,anterior chamber depth,axial length. Results The thickness and section area of lens,anterior chamber depth,axial length was 3.51?0.20 mm,22.89?1.82 mm2,3.54?0.27 mm,23.91?0.90 mm before accommodation,and 3.73? 0.34 mm,23.17?1.66 mm2,3.29?0.32 mm,23.82?1.07 mm after accommodation. The thickness of lens and anterior chamber depth were significantly higher difference after accommodation(t=3.563,P=0.007; t=4.804,P=0.001). Conclusion As a useful tool of biometric measurement,MRI showed the morphological characteristics of the lens and related structures of human eyes,in an accomodated enviroment,and thus might play an important role in related researches.