Interrelation of the eyeball morphometric parameters in girls with myopia

Abstract

Background. The features and relationships of morphometric indicators of visual organs in girls with myopia were determined. Materials and methods. The study included 148 girls (296 eyes) from 12 to 15 years old with myopia, the control group consisted of 38 girls 12–16 years old with emmetropia (76 eyes). A comprehensive ophthalmological examination was performed, including the measurement of refractive parameters, anteriorposterior size (APS) of the eyeball, radii of curvature and corneal diameter. Results. The average values of the ratio index of the eye’s APS to the radius of curvature (RC) of the cornea in the horizontal meridian are higher in girls with myopia, compared with the control group, the parameter increased as the disease progressed. A strong negative correlation was found between the values of refraction and APS of the eye, as well as refraction and the index of the ratio of APS to RC of the cornea. A positive correlation was found between the average strength of the ocular APS and the corneal RC, which is most pronounced in the groups of girls with moderate and mild myopia. The value of the corneal diameter is related to the corneal RC and the ocular APS. However, the relationship between corneal diameter and refractive parameters, as well as between refraction and corneal RC, was not established. Conclusions. It was found that the index of the ratio of the ocular APS to the corneal PC varies depending on the degree of myopia. There are relationships between the morphometric parameters of the cornea and the length of the eyeball.

Keywords

• myopia
• morphometry of the eyeball
• the radius of curvature of the cornea
• the corneal diameter
• anterior-posterior size of the eye