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Choosing the perfect lenses for your eyewear is paramount for achieving optimal clarity, comfort, and longevity. In this comprehensive guide tailored for those shopping online for glasses, we dive into the essential aspects of lens materials to ensure you will see and feel your very best. We will explore the advantages of three popular options: Plastic (CR-39), Polycarbonate, and Hi-Index. At Befitting.com, we go the extra mile by customizing lenses to your exact preferences and needs, ensuring a bespoke fit for every frame, whether it's from Calvin Klein, Ray-Ban, or Betsey Johnson. Plus, with vision insurance, your lens benefits are clearly outlined, making the entire process seamless and cost-effective. Simply sign in to your benefits and start shopping here.
1. Plastic (CR-39) Lenses:
Key Features:
- Clarity: CR-39 lenses offer superb optical clarity, ensuring a clear view with minimal distortion.
- Comfort: These lenses are lightweight when compared to traditional glass lenses. These are most suitable for those with lower prescription types.
- Affordability: CR-39 lenses are a budget-friendly option without compromising on quality.
Advantages:
- Ideal for low to moderate prescriptions.
- Versatile choice for everyday eyewear.
- Perfect for those looking for a cost-effective solution without sacrificing visual quality.
Cons:
- As prescription power increases, lens will become heavier and thicker.
2. Polycarbonate Lenses:
Key Features:
- Clarity: Polycarbonate lenses provide excellent optical clarity, making them suitable for a wide range of prescriptions.
- Durability: These lenses are highly impact-resistant and offer robust protection for active lifestyles. This durability is the reason it is the FDA recommended lens material for children (under 18 years old).
- Lightweight: Polycarbonate lenses are lighter than CR-39, enhancing comfort.
Advantages:
- A great lens for a wide range of prescriptions, the closest to ‘one size fits all’ in materials.
- Great for sports and outdoor activities.
- Scratch-resistant properties ensure long-lasting quality.
- Suitable for anyone seeking a lightweight and durable lens option.
- Fully covered lens benefit by vision insurance for anyone under the age of 18.
Cons:
- Not as thin for very strong prescriptions.
3. Hi-Index Lenses:
Key Features:
- Clarity: Hi-Index lenses deliver exceptional optical clarity, particularly for stronger prescriptions.
- Thickness: These lenses are ultra-thin, reducing lens thickness and the "bug-eyed" effect.
- Lightweight: Hi-Index lenses are the lightest option, providing a comfortable and stylish choice.
Advantages:
- Perfect for high prescriptions, minimizing lens thickness.
- Aesthetic appeal due to their slim profile.
- Comfortable for all-day wear, even with significant corrections.
Cons:
- Does not provide the same level of protection as polycarbonate lenses.

Summary of Choosing the Right Lens Material
In conclusion, selecting the right lens material is a personalized decision shaped by your prescription, lifestyle, and style preferences. Here's a brief recap to aid your decision-making process while shopping online for your next pair of glasses:
- CR-39 LENSES: Affordable and versatile, suitable for everyday use with moderate prescriptions.
- POLYCARBONATE LENSES: Perfect for active lifestyles and outdoor pursuits, offering both durability and optical clarity.
- HI-INDEX LENSES: Ideal for high prescriptions, providing thinness, lightweight comfort, and aesthetic appeal.
Ultimately, your choice of lens material hinges on factors like prescription strength, lifestyle demands, aesthetics, and budget considerations. For tailored advice, consult with your eyecare professional or reach out to our dedicated Befitting.com Customer Care team. Whether by phone at 1-833-233-4884 or by email at help@befitting.com, we're here to offer expert guidance and assistance. Armed with knowledge about each lens material's characteristics, you can confidently and conveniently shop for eyewear from home and make selections that not only meet your visual needs but also complements your lifestyle.