Which lens power (diopter) should be selected to correct myopia?

Initially, vision can be corrected with eyeglasses, thereby restoring visual acuity. Surgical intervention may be considered after age 18. Currently, a type of rigid, plastic contact lens worn overnight is available for correcting myopia in children. Specifically, the child wears a pair of rigid gas-permeable (RGP) contact lenses while sleeping; these lenses gently reshape the cornea by flattening it. The lenses are removed upon waking the next morning, and clear vision is maintained throughout the day. So, what refractive power (diopter) of lens should be selected for myopia correction?

What Refractive Power (Diopter) of Lens Should Be Selected for Myopia Correction?

To correct myopia, it is advisable to select relatively thin lenses, which help reduce the overall weight of the glasses and minimize pressure on the nasal bridge skin. Thinner lenses typically have a higher refractive index—the higher the refractive index, the thinner the lens. Generally, lenses with a refractive index greater than 1.7 are recommended. Additionally, when selecting frames, opt for smaller frames, as this results in thinner lens edges. Moreover, individuals with high myopia should undergo regular fundus examinations.

If such complications occur, prompt medical attention is essential to prevent serious consequences. In addition to routine follow-up examinations, patients with high myopia should avoid strenuous or high-impact activities, protect against ocular trauma, and refrain from jumping from elevated heights—these precautions help minimize the risk of complications such as retinal detachment.

In daily life, patients should maintain a positive mindset, actively cooperate with their physicians during treatment, take prescribed medications as directed (both in dosage and timing), and pay close attention to routine eye care—thus facilitating timely improvement of their condition. We hope this response has been helpful to you.