Jury Eye Care
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Why do my bifocal glasses not work?

Friday, November 15 2013 3:57 PM
By Jim Jury

The foundational issue for bifocal, trifocal, and multifocal failure is that the static lens systems are replacing a previously dynamic system. Accommodation is a  dynamic process allowing the eye to auto focus for any given distance within three feet. The eye ultimately looses that ability at the approximate age of 45 resulting in a static, nonchanging power compromising vision at computer and reading distances. Glasses lenses are static systems without the ability to change at any given distance thus a prescription that works for 40 cm will not be clear at 2 meters.

The key to making the multifocal lens work properly is to format the needed optical powers into a functional lens system consistent with the individual demands of each patient’s working environment. This can be difficult given the visual demands of each patient are different necessitating a personalized approach to assigning not only lens powers but also lens designs. Fortunately there are many new technologically advanced multifocal designs and with proper attention to the patients working environment, a successful solution can be achieved.

At Jury Eye Care we take the time to evaluate your individual needs and assign a lens that works best for each individual need.  The primary objective is to establish a single lens system that achieves multiple tasks thus eliminating the need for multiple glasses.  New technology such as digital progressive lenses has opened the door to options not previously available to resolve bifocal, trifocal, and multifocal problems.  View our products for more information on specific lens technology.

Tags: lenses

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Our blog dedicated to complete eye care and ocular health

Why do my bifocal glasses not work?
The foundational issue for bifocal, trifocal, and multifocal failure is that the static lens systems are replacing a previously dynamic system. Accommodation is a  dynamic process allowing the eye to auto focus for any given distance within three feet. The eye ultimately looses that ability at the approximate age of 45 resulting in a static, nonchanging power compromising vision at computer and reading distances. Glasses lenses are static systems without the ability to change at any given distance thus a prescription that works for 40 cm will not be clear at 2 meters. The key to making the multifocal lens work properly is to format the needed optical powers into a functional lens system consistent with the individual demands of each patient’s working environment. This can b…

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What is Keratoconus and what are my options for better vision?
Keratoconus is a degenerative eye condition affecting the cornea which is the front surface of the eye responsible for focusing or converging the light and images through the eye. Keratoconus occurs when the cornea losses structural rigidity due to thining, resulting in areas of bulging. The bulging is the result of the naturallyoccurring pressure of the eye pushing the weak area of the cornea forward with the subsequent affect of distorting the cornea and causing vision loss. The cause is unknown but possibly related to genetics and/or environmental factors. Statistically 1 in 500 people are affected by this condition. Many people are undiagnosed and simply live with vision loss not realizing there are options to restore vision. Restoration of Vision After …

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