Archive for the ‘Sunglasses’ Category

Re: Prescription Sunglasses are too Heavy

May 20th, 2010 by Dr Carol Doman

Farhad wrote:
I placed an order for a pair of prescription sunglasses. So I had my eyes examined and then selected the frame of my choice. On the day that I picked up this pair, I noticed that the lenses installed on the frame were somewhat very thick, thicker than what I always used to have.  My sunglasses are using lenses of very high quality and worth good amount of money. Once I started using my sunglasses, I realized that they start hurting my nose after 20 minutes of usage; they weight a lot and a continuous usage hurts my nose to a point that I need to remove them. Don’t you believe that the sales person should have advised me if I selected a suitable type of frame for this intention? Don’t you believe he should have had that knowledge that the selected frame may require a lot of lenses surface and thus would make the final product very uncomfortable once sitting on one’s nose? Please advise. Thank you.

ANSWER

Hi Farhad,
It is always true that after placing prescription lenses in a frame the weight will increase.  Depending on your prescription the amount of weight will vary.  Did you get high-index (thinner) lenses in your sunglasses? If not you may be able to upgrade to high-index lenses, which would help with the thickness and the weight of the lenses. There’s a good chance that you also might need to have the frame adjusted on your face.  Sometimes by tightening the frame behind your ears this will alleviate the pressure the frame is exerting on your nose.  My advice would be to return to where you purchased the sunglasses and see what they can do to since you are not happy with your new glasses.
Dr. Doman

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Re: Why is the Tint a Number or Percentage?

May 17th, 2010 by Dr. Virginia Donati

Trish wrote:
Good morning,

My question is with relation to tints. When billing for tints why is a tint number or percentage identified? Is this information writen on teh prescription? If not, how does the lab know what tint to add to teh lenses?

Thanks,
Trish

ANSWER

Hello Trish,
The number used to classify tints identifies how dark the tint is.  If a tint is 70-80%, it is a full sunglass-type tint.  If a tint is 10-30%, it is more of a light, cosmetic tint.  If, for example, your prescription reads 70% Brown, it is saying that you want a pair of brown sunglasses.  This number will be written on the prescription in most cases.  Thank you for your question.
Dr. Donati

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Re: Finding Light-Weight Prescription Sunglasses

April 7th, 2010 by Dr. Sally Aldayeh

Tom wrote:
My prescription

OD +6.50 -1.75 180 +2.50
OS +7.75 -2.00 175 +2.50

Pretty strong!!!!!

I want to buy a pair of sunglasses but want them as light as possible and somewhat trendy. What company would make the highest index progessive lens for the my prescription

Thanks

ANSWER

Hi Tom,

I would suggest Aspheric lenses for that prescription, all lens makers and suppliers make aspheric lenses.

Good luck,
Dr. Sally Aldayeh, OD

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Re: Problems with Sunglasses

March 18th, 2009 by Dr Joan Hansen

Joe wrote:
 
I am 25 and have had my eyes checked within the last year. Great vision, no glasses. The problem I have is when I wear sunglasses; they start to hurt my eyes after about 30 min. I have had this problem every since I can remember when trying to wear sunglasses. I drive a truck and it would be nice to wear sunglasses when I am dodging the sun. Is there a special type of sunglasses I should try or am I just out of luck for wearing any?

ANSWER

Some inexpensive sunglasses have very thin plastic lenses which can warp in the frame.  This warpage can cause discomfort.  I would suggest that you get a pair of sunglasses that have “optical quality” lenses, which are thicker and much less likely to warp.  Ask an Optometrist or an optical dispensary to provide you with a pair of these lenses. The colour of the lens is a personal choice, but you also might consider Polaroid lenses and/or an anti-reflection coating.

Dr. Joan Hansen, Optometrist for CAO

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