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Key Differences in Lens Refractive Indices

Date:2026.01.23   Views:2


Key Differences in Lens Refractive Indices



For the same power, higher refractive index = thinner, lighter lens; note that higher index lenses have lower Abbe numbers, causing slight chromatic aberration and marginally reduced visual clarity.


? Low index (1.50/1.56): Thick, heavy, high Abb number (superb vision). For 0-300 degrees,cost-effective.


? Medium index (1.60/1.61): Moderate thickness/weight, medium Abbe number. For 300-600 degrees, balances practicality and wear comfort.



? High index (1.67/1.74): Thin, light, low Abbe number (minor chromatic aberration). For over 600 degrees, aesthetic-focused.


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