Ultrasonic biometry of children eyes

Abstract

Abstract Purpose The goal of our work is to evaluate the anatomic measurement of eye using precise ultrasonic biometry for 9‐15 year old children with emmetropic refraction and their changes within the period of accommodation. Methods The precise ultrasonic eye biometry was performed. The following items were measured: the anterior chamber depth, thickness of crystalline lens, vitreous body length, eye axis length. Results The 1st group consisted of 32 children of 9‐12 years old.The 2nd group ‐ 44 children, 13‐15 years old. According to the data, the anterior‐posterior eye axis length, the horizontal diameter and vitreous body length of 9‐12 years old children are reliably smaller than the same measurements of the 13‐15 years age group (p=0,000018; p=0,000037; p=0,002483) accordingly. The anterior chamber depth of the 2nd group children is slightly exceeding the same measurements among the 1st group children. While the child is growing the lens crystalline grows a bit flatter, though the difference between those parameters is not essential. When accommodating the length of eye anterio‐posterior axis has not changed among the 1st group children, the extension tendency of the anterio‐posterior axis was observed among the 2nd group children, though it is statistically unreliable. A direct dependence is expressed on the average between anterio‐posterior eye axis length and anterior chamber depth as well as between anterior‐posterior eye axis length and vitreous body length (r=0,316 and r=0483). Conclusion Precise ultrasonic biometry is an effective method to detect changes of optico‐anatomical parameters of children eyes.