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Need Help On Lens Choice

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Need Help On Lens Choice

Postby LeoR500 on Wed Nov 17, 2010 4:17 pm

Hello I want to purchase a pair of Ray-Ban RX8601 but not sure about what type of lens I should get. What are the differences between high index 1.60 and 1.67? Are there any other better choices not listed? I would like to get anti-reflection, uv block, and anti-scratch coatings.

My lens prescription:
OD: Spherical +4.00, Cylindrical -5.00, Axis 178
OS: Spherical +3.00, Cylindrical -4.00, Axis 172
LeoR500
 
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Re: Need Help On Lens Choice

Postby larumd on Thu Nov 18, 2010 6:15 pm

Thank you for the post!

Both materials reference the thickness of the lens.

High Index 1.60 lenses are thinner & lighter than CR-39, polycarbonate or glass. Recommended sphere range is -/+ 4.00 through -/+ 6.00.
High Index 1.67 lenses are thinner than High Index 1.60, polycarbonate, CR-39 or glass. Recommended sphere range over -/+ 6.00.
Ultra High Index 1.74 is the thinnest & lightest plastic material. AR coating is included, recommended sphere range is 0.00 through -/+ 18.00

There are so many variables, a lot of this depends on frame style, size and your prescription. Each lens materials has the same properties as polycarbonate so anti-scratch is included and they block UV rays. AR (non-glare) coating would need to be ordered extra for most lenses except 1.74.

Give us a call at 1-800-504-5897 option 5 if you have any other questions. We are here to help!
larumd
 
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Re: Need Help On Lens Choice

Postby dth on Tue Apr 05, 2011 2:43 am

Hi,

Does this mean when ordering the Ultra High 1.74 lenses, the UV and AR options are unnecessary?

Thanks
dth
 

Re: Need Help On Lens Choice

Postby larumd on Tue Apr 05, 2011 12:01 pm

DTH,

You are correct. Ultra High Index comes with AR coating, anti-scratch and UV coating by default.

Let me know if we can help you further.
larumd
 
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Re: Need Help On Lens Choice

Postby SL on Mon Aug 22, 2011 8:56 pm

Hi Larum

Can you please confirm that if I were to order Ray Ban RX8633 frames with prescription High Index 1.74 lenses, the lenses will include AR, UV protection and anti-scratch coatings without the need to pay extra for them? This is not clear in the ordering process and I saw your earlier post from April but wanted to know if it still applied today.

Thanks
SL
 

Re: Need Help On Lens Choice

Postby larumd on Tue Aug 23, 2011 12:06 pm

SL,

Thanks for the post. Ultra High Index comes with AR coating, anti-scratch and UV coating by default. The lenses of the 1.74 must be clear and cannot be tinted.

I hope this helps. Call me when you are ready to place an order at 1-800-504-5897 ext 320. I will help you personally!
larumd
 
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Joined: Wed Feb 10, 2010 1:40 pm