What’s the difference between Diffractive and non-diffractive EDOF IOLs?
Standard mono-focal intraocular lenses (IOLs) are the most common type of IOL used in cataract surgery. These lenses are designed to provide patients with either distance or near vision, but not both. This means that patients who have mono-focal IOLs implanted will typically need to use glasses for one type of vision, either for distance or for near.
Diffractive Extended Depth of Focus (EDOF) lenses, such as Synergy IOLs, are a newer type of IOL that provides a smooth continuous focus from near (17 inches) to far (20 feet). These lenses use a diffractive technology that creates multiple focal points, allowing patients to see clearly at a wide range of distances without the need for glasses.
Non-diffractive or smooth-surfaced EDOF IOLs, such as RayOne EMV or Tecnis Eyhance IOLs, provide an increased depth of focus of about 1.5D. These lenses are designed to provide patients with improved near and intermediate vision, and they work really well when used in a blended monovision arrangement. In this arrangement, one eye is focused better at near to mid-range, while the other eye is focused between mid-range and distance.
In conclusion, diffractive EDOF IOLs like Synergy IOLs provide a smooth continuous focus from near to far, non-diffractive EDOF IOLs like RayOne EMV or Tecnis Eyhance IOLs provide increased depth of focus within the 1.5-meter range, and standard mono-focal IOLs provide only distance or near vision. Blended monovision is a great option for people who are looking for a good balance of near and distant vision without glasses.
It is important to note that there is no such thing as a "perfect" or "best lens" for every patient. The choice of an IOL is highly individualized and depends on various factors such as the presence of other ocular conditions, history of previous refractive surgeries, age of the patient, presence, and degree of corneal astigmatism, and more. The relationship between these factors is complex and the decision should be made together with an ophthalmologist who is experienced in both corneal and lens-based refractive procedures.
It is also important to remember that your options in cataract surgery will be limited to the skill set and experience of the surgeon, as well as their access to needed diagnostic and therapeutic technologies. It is crucial to consult with an experienced and qualified ophthalmologist who can evaluate your individual needs and provide guidance on the best IOL option for you.
In summary, there is no one-size-fits-all solution when it comes to choosing an IOL. It is a highly individualized decision that should be made in consultation with an experienced ophthalmologist, taking into account various factors such as the presence of other ocular conditions, previous refractive surgeries, patient age, and corneal astigmatism. The skill set and experience of the surgeon, as well as access to necessary diagnostic and therapeutic technologies, also play a crucial role in determining the best IOL option for you.
An IOL exchange is a specialized procedure used to remove and replace a previous lens implant when the original IOL no longer provides the best possible vision or when a different lens may better support the patient’s needs.
Cataract surgery today is no longer just about removing a cloudy lens—it’s about improving overall eye health and long-term visual outcomes. For patients who have both cataracts and glaucoma (or elevated eye pressure), modern ophthalmology now offers a powerful combined solution: cataract surgery with OMNI® minimally invasive glaucoma surgery (MIGS).
Cataracts are a common vision concern, yet misinformation still makes many people hesitant about seeking treatment. At Benjamin Eye Institute, we're here to clear the confusion and ensure you have the facts about cataract surgery.
Meet Ronnie, a longtime friend and patient of Dr. Arthur Benjamin, who has been on an incredible vision correction journey! From wearing rigid gas permeable contact lenses and being severely nearsighted (-16 to -17 prescription) to undergoing Intraocular Phakic Contact Lens (ICL) implantation, LASIK, and now Cataract Surgery—his case is a true eye care success story!
Dr. Arthur Benjamin is one of the first surgeons in Los Angeles to offer custom laser cataract surgery with the revolutionary ALLY® Adaptive Cataract Treatment System. This cutting-edge technology combines advanced imaging with optimized femtosecond laser precision, allowing the entire procedure to be performed in a single, sterile setting—enhancing efficiency, accuracy, and patient comfort.
Are you experiencing blurry vision, increased sensitivity to light, or trouble seeing at night? These could be signs of cataracts—a common age-related condition that affects millions of people worldwide. Fortunately, cataract surgery is a safe, effective, and life-changing procedure that restores clear vision and enhances your quality of life.
The first thing you should do after receiving the official diagnosis of cataract is to remain calm because they are easily curable. Making the appropriate choices for a location and doctor for treatment is the second and most important step. Here are 8 Important Questions You Should Ask Your Surgeon. By asking any potential surgeon these eight questions, you can feel confident you’re putting your vision in the right hands, and you will soon say goodbye to your cataracts and hello to the clearest vision you have ever experienced.
At the Benjamin Eye Institute, we are thrilled to introduce the latest innovation in intraocular lenses (IOLs) from Bausch and Lomb – the Aspire non-diffractive extended depth of focus IOL. Available in both Toric and Spherical versions, the Aspire IOL offers an exceptional option for patients who dream of reducing their dependence on glasses for both near and far vision.
