"The freedom from having
to continually put glasses
on and take them off for
different activities is a
freedom, in my personal
opinion, second to none."
John Forde
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Can you imagine the possibility of life without glasses?

What’s the difference between Tetraflex and a monofocal lens?
A standard monofocal lens allows you to see well at one distance only (usually far). This lens does not offer near vision or guarantee any intermediate vision. Eventually you will need glasses for reading or seeing up close, even if you have had good vision all your life. Tetraflex gives you the ability to see at a range of distances – mid, near and far. It transitions smoothly as you are viewing objects at different ranges. With good near vision, you can reduce your dependence on glasses.
What is an aspheric monofocal lens?
An aspheric monofocal lens allows you to see well at one distance only (usually far). This lens does not offer near vision or guarantee any intermediate vision. Due to the design, the aspheric monofocal lens can increase contrast sensitivity, which enables you to see objects that don’t stand out from their background very well. This lens simply attempts to make your vision a little more crisp.
What’s the difference between Tetraflex and a multifocal lens?
A multifocal lens enables you to see at 2 fixed distances – near and far. However, this results in limited flexibility with respect to near and mid vision. When participating in near activities, such as reading you will be required to find the exact position to hold materials in order to focus. You may also require the use of glasses for intermediate or mid vision. Multifocal lenses often cause side effects such as halos which are rings of light around objects, especially at night, and glare, or the inability to see when looking at bright lights. Another drawback to these lenses is reduced contrast sensitivity. You may experience difficulties seeing objects that aren’t easily distinguished from their background, resulting in trouble seeing cars at night, not being able to see spots on clothes, counters or dishes, difficulty pouring coffee into a dark mug, or seeing in low light conditions such as dusk, rain, fog or snow. Tetraflex provides you with excellent distance and intermediate vision, and very good near vision. The focal distances are not fixed, and allow a smooth transition from near to far. There is far less incidence of halos and glare and no loss of contrast sensitivity with Tetraflex.
Why should I pay for Tetraflex vs one of the standard lenses?
Tetraflex will allow you to see well for distance and intermediate but also provides functional near vision. The standard lens will only provide good distance vision only.
How much will it cost?
Please consult with your individual healthcare provider.
Will I still need to wear glasses with Tetraflex?
Tetraflex gives you excellent intermediate and distance vision, and very good near vision. After surgery, 90% of Tetraflex patients can read newspaper size print without glasses. However, every eye is different and you may still require glasses when focusing on near activities for an extended period of time, or for reading very small print such as classified ads or stock quotes.
Are there side effects associated with Tetraflex?
Most patients report very few halos and glare or issues with contrast sensitivity. Tetraflex can reduce your dependence on glasses – 90% of patients can read newspaper size print without glasses.
What is contrast sensitivity?
Contrast sensitivity is the ability to see objects that don’t stand out from their background very well. A white object against a grey background is an example of poor contrast. A black object against a white background is an example of excellent contrast. Poor contrast sensitivity makes it difficult to distinguish objects when faced with everyday situations such as: seeing curbs, faint shadows or stairs; cutting an onion on light coloured surface, pouring coffee into a dark mug, not seeing a flame burning on a stove; seeing in low light situations such as dusk, fog, rain or snow.
What is presbyopia and what is the best treatment?
Presbyopia is the gradual loss of the eye’s ability to see things up close, due to a loss of flexibility in the natural lens of the eye. Presbyopia usually begins sometime in your 40’s, when you start to experience blurred vision at near points and find that you need to hold reading material at arm’s length in order to focus properly. There is no getting around presbyopia – it happens to everyone at some point in their life even if they have never had any previous vision problems. The “treatment” for presbyopia is the use of reading glasses, or “cheaters.” This type of eyewear provides magnification enabling you to see more clearly at near range. Tetraflex is a presbyopic lens that addresses this condition. It mimics the natural function your eye once had, enabling you to transition from near to far like a youthful eye.
Will my cataract ever return? Will this vision last forever?
An IOL is a permanent solution to your cataract and the correction of vision is designed to be permanent. When your natural lens has been replaced with an IOL, the cataract cannot return. However a small percentage of patients require a second procedure to enhance vision. This is a minimally invasive laser procedure that is sometimes referred to as a secondary cataract. however, your new IOL itself has not developed a cataract.
Can I return to my normal activities right away? Will I be able to read right away? Is there an adjustment period?
Most patients can return to normal activities within a few days after surgery. Your doctor's office will supply more specific instructions regarding medications etc.  Your reading vision may take a few weeks to adjust, however this is perfectly normal.
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