Orthokeratology lense use does not impact tear film stability and condition of meibomian glands
A new study by Jing Ruan and team shows that wearing orthokeratology lenses overnight did not substantially influence the stability of the tear film or the condition of the meibomian glands, showing that using orthokeratology lenses continuously for a whole year had little impact on the ocular surface. The findings of this study were published in BMC Ophthalmology.
To slow the growth of myopia, orthokeratology lenses that are worn at night are advised. By temporarily modifying the corneal surface using a reverse geometry design, they can affect the ocular surface while lying on the cornea. Therefore, this study examined how children aged 8 to 15 years responded to wearing orthokeratology lenses overnight in terms of tear film stability and meibomian gland health.
33 children with monocular myopia were included in this self-controlled, prospective trial. They were given orthokeratology lenses for at least a year. 33 myopic eyes made up the ortho-k group, which was the experimental group. The same participants' emmetropic eyes made up the control group. Using a Keratograph 5M (Oculus, Wetzlar, Germany), tear film stability and meibomian gland status were assessed. To compare the data between the two groups, Wilcoxon signed-rank tests and paired t tests were applied.
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