Even if you have perfect 20/20 vision and only want "plano" (zero-power) lenses, you from an eye care professional.
Avoid buying lenses from street vendors, beauty supply stores, or novelty shops. These are often unregulated and may contain harmful dyes or be contaminated. Stick to retailers that and sell FDA-cleared lenses. Trusted Online Retailers: Colored Contacts & Halloween Safety buy colored contacts halloween
A doctor will measure your eye's shape to ensure the lenses fit properly. Ill-fitting lenses can cause corneal abrasions, infections, or even permanent vision loss. Even if you have perfect 20/20 vision and