Can individuals with astigmatism and myopia wear colored contact lenses?
Jun 29, 2022
Source: Cainiu Health
Dr. Chen You
Introduction
Individuals with myopia combined with astigmatism can wear cosmetic contact lenses (also known as “colored contacts” or “circle lenses”). A simple spherical lens does not correct astigmatism; when astigmatism is mild, it is often converted into an equivalent spherical prescription for lens wear—however, this approach yields suboptimal visual quality. Custom toric cosmetic contact lenses designed specifically for astigmatism are available, but their fitting and calculation are more complex than for simple myopia. Generally, the astigmatism measurement obtained during a standard refraction exam is intended for eyeglasses; for cosmetic contact lenses, certain adjustments or conversions are typically required.
Myopia and astigmatism are both types of refractive errors that can lead to decreased visual acuity; they may coexist. Myopia primarily causes reduced vision due to elongation of the eyeball’s axial length, and corrective eyeglasses typically use concave lenses to restore vision to normal levels. So, can individuals with both myopia and astigmatism wear cosmetic (colored) contact lenses?
Can individuals with myopia and astigmatism wear cosmetic contact lenses?
Yes, individuals with both myopia and astigmatism can wear cosmetic contact lenses. A simple spherical lens does not induce astigmatism—or induces only minimal astigmatism—so in cases where astigmatism is very mild, it is often converted into an equivalent spherical correction for lens wear. However, this approach does not yield optimal visual quality. Toric (astigmatism-correcting) cosmetic contact lenses are available, but their prescription calculation is more complex than for standard myopic corrections. Typically, the astigmatism measurement obtained during a standard spectacle refraction must be converted for use with contact lenses. For example, after spectacle refraction, the myopic power measured along two principal meridians is separately converted into appropriate contact lens prescriptions.
Engage in regular physical exercise, minimize prolonged near-work activities, practice distance viewing, and increase time spent outdoors. Adequate sleep helps alleviate ciliary muscle spasm caused by excessive accommodative convergence; generally, children should sleep at least 8 hours per night, with an optimal duration exceeding 9 hours. Schedule routine vision examinations and correct any decline in visual acuity promptly. Enhance dietary nutrition by consuming foods rich in vitamin A, calcium, and zinc.
In daily life, cultivate healthy lifestyle and dietary habits. We hope this information is helpful to you.
