Each brand of contact lenses is unique. So it’s better to ask which is the best for you. Over 90 percent of contact lens wearers use soft lenses, so this advice is about them. When looking for soft lenses, consider the following:
Base curve. This is the primary curve at the back of the contact lens, which determines how well the lens fits and the quality of vision correction. It should be nearly the same as your eye’s front curvature (cornea). Your eye doctor will choose a soft lens brand with a base curve appropriate for you. Though most brands fit the average cornea well, you may need a lens with a steeper or flatter base curve that’s only found in certain brands.
Diameter. A contact lens of the proper diameter will stay comfortably centered on the cornea. Brands can vary widely here: the size and shape of your eye will determine the diameter of your contact lenses. If you have a small eye opening, for example, you may need a smaller lens diameter to help you apply and remove your contacts easily.
Correction. Some contact lens brands feature high-powered correction for severe myopia (nearsightedness) and hyperopia (farsightedness).
Astigmatism. If your astigmatism requires a toric (spherical/cylindrical) contact lens, certain brands will ensure proper alignment and minimal lens rotation. Depending on the shape of your eye and other factors, you may see well with one brand toric lenses but not another—even if the brands have the same base curve and diameter. If you fall into this category, ReplaceMyContacts has products like Acuvue Oasys for Astigmatism that will fit your needs.
Surface treatments. Some soft contact lenses feature lens treatments that keep lenses moist for greater comfort. If your eyes dry out quickly these may be best for you.
Naturally, the only way to choose is to have an eye exam and professional contact lens fitting. The first brand your eye doctor chooses will usually be best for you, but sometimes you’ll need to try several brands before making a decision.