3D Glasses

What Are the Main Differences Between Fixed and 3D Glasses?

3D glasses are corrective lenses used for nearsightedness and farsightedness in refractive surgery. A typical 3D Glasses solution includes two pairs of glasses that are configured to create an alternating pattern of colored light. Polarized glasses are designed to correct for near and far vision while using a different focal length than the patient requires. These corrective glasses may be used to correct astigmatism, presbyopia, myopia or presbyulopathy.

3D Glasses


DescriptionA simple three dimensional corrective system employs polarized glasses to produce the optical illusion of three dimensional objects by redirecting the light that hits each eye to account for the differing angles of the patient's cornea. The concept is similar to light reflecting on a surface. The normal vision of a person relies on light rays parallel to the surface, but when these rays are reflected from curved surfaces, it appears that light rays are coming from many angles. This effect is what is responsible for our perception of multiple images through space.


The cornea is shaped like a baseball in order to house a light lens and corneal tissue. When light hits the cornea, the corneal tissue projects an image in the form of a blurred image that is seen by the patient's cornea and eye pupils. A corrective surgical procedure corrects the misalignment between the front and the back of the eye, as well as the way the two hemispheres of the cornea are structured. In the corrected vision, light rays coming into the eye focus on the same spot located behind the cornea, producing a clearer view than before.


Corrective Glasses - A pair of glasses is used to correct vision for a variety of eye conditions. For those with Astigmatism, special glasses called an intraocular lens (IOL) are needed in order to view objects at a close distance and to focus light appropriately. IOLs contain gas such as gas permeable (RGP) and polycarbonate lenses. These glasses must be custom made in order to achieve the right prescription and focus light properly. This enables the patient to see objects clearly without straining their eyes.


Presbyopia and Hyperopia are two other conditions that require corrective glasses. Both conditions occur when the eye becomes unable to focus light on an object, resulting in blurry vision. For people suffering from presbyopia it results in a change in the length of the eyeball. On the other hand, for those suffering from hyperopia the eye can become smaller because of damage to the retinas.


There are various options available for those who suffer from any of these conditions. Corrective eyewear must be customized to fit the patient's specific needs. For example, those with astigmatism will require stronger prescription glasses in order to correct their vision. Because it can be difficult to determine the correct prescription for patients suffering from several different eye conditions, glasses must be designed to correct each of these conditions.


In addition to wearing glasses for visual correction, some people choose to wear corrective and read-only glasses. As you can imagine, these glasses are designed only to help a person see. They will not address every aspect of a person's life. If a person chooses to purchase 3D glasses they must also purchase a display unit and a separate pair of prescription lenses. In order to use 3D glasses, the display unit must be able to project images onto the glasses, which may not include stereo glasses.


It is important to obtain a professional eye exam before choosing to buy any kind of special eye wear. It is also important to ensure that your glasses prescription is current and has not been expired, which may dilute the strength of the prescription. Most eye care professionals will be able to provide you with a copy of your prescription. You will also want to consult with your optometrist regarding the specifics of the glasses. The optometrist can also help you determine whether or not you are eligible for glasses insurance coverage.