AIM: To examin college students part of refractive features(corneal curvature, axial length), and understand their impact on college students myopia.

METHODS: In 456 college students(912 eyes)with myopia, cycloplegic retinoscopy optometry was used to measure the refractive error, corneal curvature, and axial length. The data were conducted and analyzed.

RESULTS: In 456 cases(912 eyes)with myopia, diopter of 524 eyes was less then -3.00DS, accounting for 57.5%, -3.25～-6.00DS was in 265 eyes(29.1%)and 123 eyes were more than -6.25DS, accounting for 13.5%. The mean axial length was significantly different between high myopia and low to moderate myopia(P<0.05). In two different diopter groups with different age, corneal diameter vertical lines, and horizontal diameter of curvature were significantly different(P<0.05).

CONCLUSION: Students with low myopia was for most, accounting for 57.5%. The incidence of myopia in girls was more than that in boys. This situation may be related to female puberty earlier than boys. There is no evidence that myopia in students of moderate or low myopia group is due to axial extension. It probably caused by unbalanced curvature of refraction elements and matching disorders. In the high myopia group, myopia mainly dues to axial myopia growth.