![1.56 1.61 1.67 1.74 Index Prescription Lens Anti Blue Light Resin Aspheric Lenses Optical Myopia Hyperopia Presbyopia Lentes - Eyeglasses Lenses - AliExpress 1.56 1.61 1.67 1.74 Index Prescription Lens Anti Blue Light Resin Aspheric Lenses Optical Myopia Hyperopia Presbyopia Lentes - Eyeglasses Lenses - AliExpress](https://ae01.alicdn.com/kf/H6f0d2ccb29e8479087f0af56005f90c8o.jpg)
1.56 1.61 1.67 1.74 Index Prescription Lens Anti Blue Light Resin Aspheric Lenses Optical Myopia Hyperopia Presbyopia Lentes - Eyeglasses Lenses - AliExpress
Recently, I replaced my 1.61 index lens with 1.67 and the prescription is the same. But after that, I felt some strain in my eyes. Is this a lens quality issue? - Quora
![1.61 Photochromic Single Vision 1.67 Index 1.56 Prescription Optical Spectacles Lenses With Fast Color Change Performance,2pcs - Eyeglasses Lenses - AliExpress 1.61 Photochromic Single Vision 1.67 Index 1.56 Prescription Optical Spectacles Lenses With Fast Color Change Performance,2pcs - Eyeglasses Lenses - AliExpress](https://ae01.alicdn.com/kf/HTB12CCIL4naK1RjSZFBq6AW7VXai/1-61-Photochromic-Single-Vision-1-67-Index-1-56-Prescription-Optical-Spectacles-Lenses-with-Fast.jpg)
1.61 Photochromic Single Vision 1.67 Index 1.56 Prescription Optical Spectacles Lenses With Fast Color Change Performance,2pcs - Eyeglasses Lenses - AliExpress
![Blue Light Blocking Eyeglasses Lenses 1.56/1.59 PC/1.61/1.67 Hmc UV420 Protection Blue Cut Anti Blue Ray Optical Lens - IRGLUX.COM Blue Light Blocking Eyeglasses Lenses 1.56/1.59 PC/1.61/1.67 Hmc UV420 Protection Blue Cut Anti Blue Ray Optical Lens - IRGLUX.COM](https://image.made-in-china.com/2f0j00GWOcmAQPrjbY/Blue-Light-Blocking-Eyeglasses-Lenses-1-56-1-59-PC-1-61-1-67-Hmc-UV420-Protection-Blue-Cut-Anti-Blue-Ray-Optical-Lens.webp)