When it comes to contact lenses, it may seem that one brand is just like another. However, eye doctors carefully select specific brands based on various factors to ensure a proper fit and meet individual needs. While these differences may not be apparent at first glance, they play a significant role in determining which brand of contact lenses is the best fit for each person. Key distinctions between contact lens brands include the lens material's oxygen permeability, the wettability of the lens surface, and additional features such as astigmatism correction, UV or blue light blocking, and tint for sunlight.
One critical difference among contact lens brands lies in the material they are made from and their oxygen permeability. Oxygen permeability refers to the ability of lenses to allow oxygen to reach the cornea, the clear front surface of the eye. The level of oxygen permeability largely depends on the specific material, which varies among different brands. Brands that prioritize high oxygen transmissibility tend to offer greater comfort and promote healthier eyes, particularly during extended periods of wear.
The choice of material is important when it comes to determining the overall oxygen permeability and breathability of the lenses. Eye doctors consider individual needs, such as wearing schedules, lifestyle, and any preexisting eye conditions, when selecting a specific brand that offers the appropriate oxygen permeability for optimal eye health.
Another factor that differentiates contact lens brands is the wettability of the lens surface. The wettability determines how well the lenses retain moisture and resist dryness. Some brands may feature a surface treatment or coating that enhances moisture retention, making the lenses more comfortable to wear throughout the day. The improved wettability can also reduce the buildup of deposits on the lens surface, which is beneficial for individuals prone to dry eyes or discomfort during lens wear.
Eye doctors may consider the individual's tear film characteristics, dry eye tendencies, and comfort preferences when recommending a contact lens brand that offers superior wettability.
Aside from the physical properties of the lenses, various brands offer additional features and customization options to cater to specific needs. For instance, individuals with astigmatism require contact lenses specially designed to correct the irregularities in their cornea shape. Brands that offer toric lenses with specific parameters for astigmatism correction ensure clear and crisp vision for these individuals.
Moreover, contact lens brands may incorporate built-in features such as UV or blue light blocking filters, which help protect the eyes from potentially harmful rays and reduce digital eye strain caused by long hours of screen use. Additionally, some brands offer lenses with a tint that adjusts to sunlight conditions, providing added comfort and protection in bright environments.
When purchasing contact lenses, you should only purchase the contact lens brand that was specifically prescribed to you by an eye doctor.
This way, you are protecting your eyes from any potential problems if a different brand is not suitable for you for any reason.