What is the difference between OK lens and corneal shaping lens in the ophthalmology department of Guangzhou Zhongshan Third Hospital?

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What is the difference between OK lens and corneal shaping lens in the ophthalmology department of Guangzhou Zhongshan Third Hospital?

The Department of Ophthalmology of Guangzhou Zhongshan Third Hospital provides a variety of vision correction methods, including OK lens and corneal shaping lens. Although they are all designed to help myopia patients improve their vision, they are slightly different in principle, applicable objects, use methods and effects.

1、 Different principles

The principle of OK lens (orthodontic corneal shaping lens) is to change the shape of the cornea by using specially designed rigid contact lenses on the corneal surface, so that it can provide clear far vision. Orthokeratology (Ortho-K) changes the curvature of the cornea by using soft contact lenses on the surface of the cornea to provide clear far vision.

The biggest difference between OK lens and corneal shaping lens is that they use different materials. The former uses rigid contact lenses, while the latter uses flexible contact lenses.

2、 Different application objects

OK glasses are mainly suitable for teenagers and children, especially those with high myopia. The corneal shaping lens is suitable for myopia patients of all ages, and the patients with myopia degree between 0 and - 6.00 are the most ideal.

This is because the cornea of teenagers and children is relatively soft, which is suitable for shaping with rigid contact lenses; For adults, the cornea is relatively hard, and it is easier to achieve ideal results with a corneal shaping lens.

3、 Different ways of use

The OK mirror needs to be put on before going to bed at night, worn all night, and removed in the morning. The corneal shaping lens needs to be worn before going to bed at night and kept for at least 6-8 hours to achieve the ideal vision correction effect.

Due to the different ways of use, patients should consider their own work and rest time and use habits when choosing their own vision correction methods.

4、 Different effect persistence

The effect of OK mirror can usually last for a whole day, and patients can enjoy clear vision for a whole day after wearing OK mirror. However, due to the plasticity of the cornea, if you stop wearing OK lenses for a period of time, your vision may gradually return to its original state.

The effect of the corneal shaping lens is relatively more lasting, and it can usually maintain clear vision for 1 to 2 days. However, the vision may gradually return to the original state after a period of time when you stop wearing the corneal shaping lens.

summary

OK lens and corneal shaping lens are vision correction methods provided by the ophthalmology department of Guangzhou Zhongshan Third Hospital, but there are some differences in their principles, applicable objects, use methods and effects. The OK lens uses hard contact lenses, which are suitable for teenagers and children and need to be worn all night; The corneal shaping lens uses flexible contact lenses, which are suitable for myopia patients of all ages and need to be worn for at least 6 to 8 hours. In addition, the effect of OK lens usually lasts for a whole day, while the effect of corneal shaping lens is relatively more lasting, which can last for 1 to 2 days.

Patients should weigh their own age, myopia degree and personal habits when choosing appropriate vision correction methods. At the same time, in order to ensure health and effectiveness, it is best to consult the doctor's advice and conduct regular reexamination.