The high-index lens you should get depends on your prescription strength.
Here's a breakdown to help you decide:
- Prescription between +/-4.00 and +/-8.00: A 1.67 high-index lens is generally recommended.
- Prescription +/-8.00 and higher: A 1.74 high-index lens is generally recommended.
Why use high-index lenses?
High-index lenses are made of a special plastic material that bends light more efficiently than standard plastic. This allows the lenses to be made thinner and lighter, especially beneficial for stronger prescriptions. This results in:
- Thinner lenses: Improves the aesthetic appearance of your glasses.
- Lighter lenses: Provides greater comfort, especially for all-day wear.
- Reduced "eye magnification" or "eye reduction" effect: Minimizes distortion of your eyes' appearance.
In Summary:
Choose 1.67 high-index lenses if your prescription falls between +/-4.00 and +/-8.00, and opt for 1.74 high-index lenses if your prescription is +/-8.00 or higher. This will provide optimal lens thickness and weight reduction for your specific needs.
