Extended Depth of Focus IOLs

Extended Depth of Focus IOLs

Woman's eye with smart contact lensThe purpose of refractive cataract surgery is to reduce the need for glasses by correcting presbyopia or astigmatism and improving vision quality. Enhancing your far distance eyesight with minimal visual symptoms and maintaining intermediate into near vision are the priorities for our team. Extended Depth of Focus (EDOF) and Toric Intraocular Lenses are a starting point for discussing how to reduce dependence on glasses after cataract surgery.

At Pomerance Eye Center, P.C., our team is dedicated to providing innovative surgical treatment for vision correction with Extended Depth Of Focus and Toric IOLs. Our on-site surgical center and experienced ophthalmologists ensure you receive trusted diagnoses and care. Call our friendly team to schedule your consultation today!


Conditions and Intraocular Lenses

female patient getting a vision testPresbyopia is a vision problem that makes it difficult to focus up close, so you must hold objects further from your eyes to see clearly. Other symptoms include visual fatigue, eye strain, and headaches. Presbyopia and cataracts are both age-related vision problems. Progressive lenses in eyeglasses are one treatment option. However, seeing better without glasses affords a better quality of life and can be accomplished by replacing the eye's lens.

Extended Depth of Focus and Toric intraocular lenses (EDOF) or Extended Range of Vision (EDF) is an advanced technology used primarily to treat cataracts and presbyopia. These newer IOLs incorporate an innovative diffractive design and achromatic technology that makes the lens different from multifocal IOLs. Some of the IOLs we provide include:

  • Multifocal IOLs: A multifocal IOL works by taking various images at different distances and separating them into two distinct foci.
  • Toric IOLs: These lenses can treat refractive errors caused by the uneven curve of the cornea. They help correct astigmatism and improve distance vision.
  • EDOF IOLs: The EDOF IOL elongates the focus, resulting in a sharper focus sufficient to provide a full range of vision.

How Does EDOF Work?

Medical 3D illustration showing a single Intraocular lensEDOF uses technology similar to the highest quality professional camera lens. Chromatic distortion is the failure of a lens to focus all colors to the same point. It is caused by dispersion, the spatial separation of white light into different colors. In the way a prism breaks the light into the colors of the rainbow, the same thing can happen with intraocular lens implants, degrading the quality of vision.

The EDOF has a lower distortion level than a healthy, non-cataract human lens. It uses diffractive optics and achromatic technology to bring light into a sharper focus range instead of a single point. This results in a more continuous, wider, and higher quality range of vision.

Choosing the Right Intraocular Lens for You

Vision symptoms can vary in configuration and intensity for each individual. At Pomerance Eye Center, P.C., our team can effectively diagnose your unique vision problems and design a treatment plan that meets your needs. Our goal is to choose an IOL that results in the best possible visual acuity and minimize factors that can affect quality. These issues include ocular surface problems, minor retinal pathology, residual refractive errors, and posterior capsular opacification.

Cataract Surgery and Lens Implant

Cataract surgery entails the removal of the opacified lens and replacing it with the appropriate intraocular lens. Each eye is done separately, about a week apart, and the surgery takes approximately 15 minutes. You may not need general anesthesia for this surgery, and we will use eye drops to eliminate any discomfort.

Step 1: We will use a process called phacoemulsification to break up the cataractous lens. A small incision in the cornea allows us to insert a small probe, use sound waves to break up the cataract, then suction it out.

Step 2: Our surgeon uses a specialized instrument to insert the lens. Small haptics (arms) unfold and keep the lens in the proper position.

Step 3: We monitor your vitals for another 10 minutes after the procedure and provide you with all the post-operative instructions you will need.

Your eye will need some time to adjust to the new lens, but you may see some noticeable improvement in your vision within a few hours or days. It is not unusual for it to take as long as a week to clear your vision completely.

Improving Quality of Vision in Chattanooga

Intraocular lens on eye chart with blue backgroundAt Pomerance Eye Center, P.C., we have the expertise and advanced technology to provide highly efficient and effective cataract and IOL surgery. The ability to address both presbyopia and astigmatism in one surgery is a significant advantage. IOLs are an excellent option if you are not a candidate for laser refractive surgery and do not want to rely on reading glasses.

EDOF provides an expanded range of vision and reduces the photic phenomena of halos and glare. Not having to depend on glasses for daily activities such as using a computer or cell phone, watching television, reading menus, and driving provides increased freedom and quality of life well worth the investment. If you think it is the right time for clearer vision, make an appointment at our Chattanooga office today!