Objective

2

To compare the prevention and control effects of binocular myopia after wearing orthokeratology lenses or glasses for correction in adolescents with low-to-moderate unilateral myopia.

Methods

2

The clinical data of 46 adolescents with unilateral myopia treated in First Affiliated Hospital of Army Medical University were retrospectively analyzed，the patients were divided into the orthokeratology lenses group and spectacles group according to the correction methods，with 23 cases in each group. The axial length （AL），changes in spherical diopter （SD） and anisometropia between the myopic eye and the control eye with orthokeratology lenses spectacles for unilateral myopia correction，and orthokeratology lenses for unilateral and binocular myopia were compared.

Results

2

There was no significant difference in baseline AL，SD or anisometropia between the two groups （

P

>

0.05）. One year after unilateral myopia correction，the increase of SD for the myopic eye in the orthokeratology lenses group was less than that in the spectacles group （

P

<

0.05），and there was no significant difference in the AL elongation of myopic eyes between the two groups （

P

>

0.05）； the elongation of AL for the control eyes in the orthokeratology lenses group was more than that in the spectacles group； the increase of SD for the myopic eyes in the orthokeratology lens group was lower than that in the spectacles group （

P

<

0.05），and there was no significant difference in the increase of SD for the control eyes between the two groups （

P

>

0.05）； the anisometropia of patients in the orthokeratology lenses group was less than that in the spectacles group （

P

<

0.05）. The biological parameters of the eyes before and after wearing orthokeratology lenses in the patients with monocular and binocular myopia in the orthokeratology lens group were compared，the elongation of AL for the myopic eyes with lens in one eye was less than that with lenses in both eyes （

P

<

0.05），and the elongation of AL for the control eye was more than that with lenses in both eyes （

P

<

0.05），the increases of SD in both myopic eyes and control eyes were more than those with lenses in both eyes （

P

<

0.05），and the anisotropia was more than that with lenses in both eyes （

P

<

0.05）.

Conclusion

2

Orthokeratology lenses is better than spectacles in controlling the increase of myopia in low-to-moderate unilateral myopia，which can reduce anisometropia between eyes. However，the AL of the emmetropic eye increases rapidly during unilateral myopia correction by orthokeratology lenses，and the progression of binocular myopia can be significantly delayed after wearing orthokeratology lenses.