Measurements of the Ciliary Body Structures of Healthy Individuals with Diff erent Eye Lengths

Introduction. Dimensions of the ciliary body structures can be objectively estimated using an
ultrasound examination, optical coherence tomography, as well as by the method of transillumination.
Purpose. To study the sizes of structures of a ciliary body depending on eye length in healthy
patients.
Materials and methods. Under observation were 49 people (98 eyes) without visible pathological
changes in the anterior segment of the eye. All patients were divided into three groups, depending
on the anterior-posterior size of the eye. In all cases, infrared transpalpebral transillumination and
ultrasound examination of the anterior segment of the eye were performed.
Results. In patients with an eye length of 20–22.9 mm, the width of the pars plana of the ciliary body
averaged 3.1 mm, with an eye length of 23–24.9 mm – 4.1 mm, with an eye length of 25–35 mm –
5 mm. The width of the pars plicata of the ciliary body in the fi rst group was 1.9 mm, in the second
group – 2.0 mm, and in the third group – 2.0 mm.
Conclusion. A relationship was found between the width of the pars plana of the ciliary body and
the length of the eye. So, in healthy individuals with an eye length of 20–22.9 mm, the width of the
pars plana of the ciliary body averaged 3.1 mm, with an eye length of 23–24.9 mm – 4.1 mm, with an
eye length of 25–35 mm – 5 mm. There is a tendency to an increase in the size of the part plicata of
the ciliary body in healthy individuals with a longer eye length.