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TECNIS Symfony Extended Depth of Focus IOL for Cataract Surgery

What Is an Extended Depth of Focus IOL?

Who May Benefit From an EDOF Lens

Not every lens suits every patient, and the right IOL depends on your eyes, your health, and how you use your vision day to day. An EDOF lens tends to be a strong fit for patients who want a wide visual range with a more manageable side-effect profile than a multifocal. The final decision is always made in consultation with your Cataract Surgeon after a thorough evaluation.

If you spend your day moving between a computer, a car, and a phone screen, the distance-to-intermediate range an EDOF lens provides can be genuinely freeing. Many patients who choose the TECNIS Symfony find they can handle most daily tasks without glasses, reaching for readers only for extended fine-print reading or low-light close work.

Patients who drive frequently at night or who have found halos and glare bothersome in the past are often good candidates for an EDOF design over a diffractive multifocal. Because the EDOF approach uses a single elongated focus rather than divided light points, it tends to produce fewer of the starbursts and rings around lights that some multifocal patients report. Your Cataract Surgeon will review your specific visual needs when discussing this option.

EDOF lenses are generally better tolerated than diffractive multifocals in patients who have mild coexisting eye conditions. Patients with mild dry eye, mild glaucoma, a history of prior refractive surgery such as LASIK, or a mild epiretinal membrane may find that an EDOF lens preserves more contrast and visual quality than a multifocal design. Patients with more significant disease are often better served by a standard monofocal, and your surgeon will guide that conversation.

The TECNIS Symfony is available in a toric version that corrects corneal astigmatism, which is an irregularity in the shape of the front surface of your eye, at the same time as cataract removal. For patients with a meaningful amount of astigmatism, the toric EDOF combines two benefits in a single lens: a broad visual range and astigmatism correction. Astigmatism correction is generally recommended when preoperative corneal astigmatism is one diopter or more.

The Cataract Surgery Process

Cataract surgery is one of the most commonly performed surgical procedures, and at NewView Eye Center we use advanced technology at every step to support precise, comfortable outcomes. We offer both traditional phacoemulsification and femtosecond laser-assisted cataract surgery using the LENSAR Laser System, which uses laser energy to perform key steps of the procedure with high precision. Understanding what happens before, during, and just after surgery helps you prepare and recover well.

Before your surgery, we perform a comprehensive set of measurements to map your eye and calculate the correct lens power. Optical biometry measures the length of your eye and the curvature of your cornea. Corneal topography checks for astigmatism and irregularities in the corneal surface. Macular imaging is also part of the pre-surgical work-up, helping your Cataract Surgeon confirm that the back of the eye is healthy enough to benefit from a premium lens.

Cataract surgery is performed as an outpatient procedure, meaning you go home the same day. Numbing eye drops keep the eye comfortable throughout, and mild sedation helps you stay relaxed. Your Cataract Surgeon makes a small incision, uses ultrasound energy (or laser energy in laser-assisted cases) to break up and remove the cloudy natural lens, and then places the folded EDOF lens inside the empty lens capsule, where it gently unfolds into position.

It is normal for vision to appear hazy or fluctuating during the first day or two. Mild scratchiness, light sensitivity, and a slightly pink or red appearance of the eye are common and expected as the incision begins to heal. A protective eye shield is worn while sleeping to guard against accidental rubbing. Most patients experience little to no pain and are comfortable enough to resume light activities quite quickly.

Vision continues to improve and stabilize over the weeks following surgery as your eye heals and your brain adapts to the new optics. Most patients notice meaningful improvement within the first few days, with further refinement continuing over four to six weeks. If you are having both eyes done, final glasses, if any are needed, are typically prescribed after the second eye has fully healed so that both eyes are measured together.

Recovery and Aftercare

A smooth recovery depends on following your aftercare instructions carefully and attending all scheduled follow-up visits. The steps below protect your eyes from infection, support healing, and give your Cataract Surgeon the chance to confirm everything is on track. If anything feels unexpected between visits, contact our office rather than waiting for your next appointment.

After surgery you will be given antibiotic drops to protect against infection and anti-inflammatory drops to reduce swelling inside the eye. Lubricating drops are also helpful because dryness commonly flares in the weeks following cataract surgery. Following the prescribed drop schedule closely is one of the most important things you can do to protect your result. Most drop regimens continue for several weeks after surgery.

A few temporary restrictions help your eye heal without complication. Your Cataract Surgeon will give you personalized guidance, but typical recommendations include the following.

  • Avoid heavy lifting or straining for the first week after surgery
  • Stay out of swimming pools, hot tubs, and natural bodies of water while you are still using drops
  • Wear sunglasses outdoors to ease light sensitivity
  • Do not rub or press on the operated eye
  • Wear the protective eye shield every night while sleeping during the early healing period

Your first follow-up visit is typically scheduled for the day after surgery so your Cataract Surgeon can check the eye pressure, lens position, and the condition of the cornea. Additional visits at around one week and one month allow us to monitor healing and update any glasses prescription when the time is right. Please contact our office promptly if you notice sudden vision changes, worsening pain, or increased redness at any point between visits.

Months or sometimes years after cataract surgery, the thin membrane that holds the IOL in place can gradually cloud over. This is called posterior capsule opacification, and it can blur vision in a way that feels similar to the original cataract coming back. It is not a complication of the lens itself and is easily treated in the office with a quick YAG laser procedure that takes only a few minutes. Vision typically clears shortly after the treatment.

Risks and Realistic Expectations

Modern cataract surgery is very safe and effective, and serious complications are uncommon. That said, all surgical procedures carry some level of risk, and premium lenses involve specific trade-offs that are important to understand before you decide. Your Cataract Surgeon will walk through your individual risk profile during your consultation.

Some degree of glare, halos, and light sensitivity is normal during the first several weeks as the eye heals and the visual system adjusts to the new lens optics. Dry eye often temporarily worsens after cataract surgery, but lubricating drops and anti-inflammatory treatment help manage symptoms, and dryness usually improves over weeks to months. Mild redness fades as the small corneal incision heals.

EDOF lenses can produce some degree of starburst or halo effects around lights in low-light conditions, particularly in the early months after surgery. Most patients find these effects diminish as the brain adapts to the new optics. The TECNIS Symfony's diffractive design may produce some of these effects, and your Cataract Surgeon will discuss how this compares to other options based on your specific visual lifestyle and night-driving habits.

Serious complications are rare but are important to be aware of before surgery. Your Cataract Surgeon will discuss these with you during your pre-surgical consultation.

  • Infection inside the eye, called endophthalmitis, which requires urgent treatment
  • Cystoid macular edema, a swelling at the central area of the retina at the back of the eye
  • Elevated eye pressure that may need drops or other management
  • Lens shift or tilt that can affect visual quality
  • Retinal tears or detachment, which is more likely in highly nearsighted eyes

Some symptoms after cataract surgery should not be managed with a wait-and-see approach. If you experience any of the following, contact our office right away rather than waiting for your next scheduled visit.

  • Sudden or significant loss of vision
  • Severe eye pain or rapidly worsening redness
  • A sudden burst of new floaters or flashing lights
  • A shadow, curtain, or dark area appearing across part of your vision
  • Yellow, green, or cloudy discharge from the eye

Comparing Your IOL Options

Choosing the right IOL involves weighing what matters most to you, whether that is freedom from glasses, the fewest possible visual side effects, or correcting astigmatism at the same time. We offer a range of premium lens options so that your Cataract Surgeon can match the lens to your eyes and your life. Understanding the key differences helps make that conversation more productive.

A monofocal lens focuses clearly at one set distance, most commonly distance vision, and it is the most predictable option available. Most patients who choose a monofocal will still need glasses for reading and close work. The advantage is that monofocal lenses have the lowest rate of halos and glare, and they are a reliable choice for patients who prioritize visual simplicity or who have eye conditions that make premium lenses less suitable.

Multifocal and trifocal lenses divide incoming light into separate focal points, giving patients clear vision at near, intermediate, and distance ranges. We offer several premium multifocal options including the PanOptix Pro and TECNIS Odyssey trifocals, which can provide strong near vision coverage. The trade-off compared to EDOF designs is a somewhat higher likelihood of halos and glare, particularly at night, which some patients find bothersome and others adapt to well.

Many of our premium IOL options, including the TECNIS Symfony, are available in toric versions that correct corneal astigmatism at the time of surgery. The toric correction is built into the lens itself and is aligned to a precise axis during surgery, eliminating the need for a separate procedure. Patients with significant astigmatism who choose any premium lens should ask their Cataract Surgeon whether a toric version is appropriate for their measurements.

The Light Adjustable Lens, or LAL, is a monofocal lens that can be fine-tuned after surgery using a series of brief UV light treatments once the eye has healed. This allows the final lens power to be adjusted based on real-world healing outcomes rather than pre-surgical estimates alone. It is a monofocal lens rather than an EDOF, so most patients will still need reading glasses, but it offers a level of post-surgical customization not available with other lens types. The decision to pursue the LAL is made in consultation with your Cataract Surgeon, who will review whether it is a good fit for your eyes and goals.

Frequently Asked Questions

These answers are meant to build on the information above and address the practical questions we hear most often from patients considering the TECNIS Symfony.

Most patients with an EDOF lens handle distance and intermediate tasks without glasses, but some reliance on low-power reading glasses for extended close work or very fine print is still common. How much near vision you get depends on your eye anatomy, the specific lens power selected, and how well your visual system adapts to the new optics. Your Cataract Surgeon will set realistic expectations based on your individual measurements before surgery.

Prior LASIK surgery changes the shape of your cornea in ways that affect how lens power is calculated, but it does not automatically disqualify you from an EDOF lens. Your Cataract Surgeon will use specialized formulas and multiple measurement devices to account for the altered cornea and arrive at an accurate lens calculation. Depending on the degree of change from LASIK and the health of your cornea, a monofocal lens may sometimes produce a more predictable result, which is why a thorough pre-surgical evaluation is essential.

Standard cataract surgery is covered by Medicare and most private insurance plans, but the additional cost of a premium IOL like the TECNIS Symfony is typically an out-of-pocket expense. The exact amount varies depending on your insurance plan, the lens model, and other factors. Our team can review your specific benefits ahead of time, and we offer financing options through CareCredit as well as FSA and HSA payment to help make premium lens options accessible.

The lens is a permanent implant made from stable acrylic material that does not wear out, cloud, or require replacement. Once placed and healed, it is designed to function for the rest of your life. The only issue that occasionally arises over time is posterior capsule opacification, the clouding of the membrane behind the lens, but that is easily and quickly cleared with an in-office YAG laser treatment and does not affect the lens itself.

Mild dry eye does not necessarily prevent you from getting an EDOF lens, but the surface of the eye must be in the best possible condition before pre-surgical measurements are taken, because surface irregularities can affect measurement accuracy. We often recommend treating dry eye with lubricating drops, anti-inflammatory drops, or warm compresses in the weeks leading up to surgery. Severe or poorly controlled dry eye may influence your Cataract Surgeon toward a monofocal lens, as dry eye can make adapting to premium lens optics more difficult.

For most patients, any halos or starbursts noticed early after surgery diminish noticeably over the first three to six months as the brain adapts to the new optics, a process called neuroadaptation. The extent and duration of adaptation vary from person to person. Patients with larger pupil sizes in low light or certain corneal characteristics may notice more persistent symptoms, which is one reason your Cataract Surgeon reviews your pupil size and corneal health as part of pre-surgical planning.

Schedule Your Cataract Consultation at NewView Eye Center

If cataracts are affecting your vision and you want to explore whether an extended depth of focus lens like the TECNIS Symfony is right for you, our team is here to help. NewView Eye Center has been providing personalized, expert cataract care to patients across Northern Virginia since 1999, and we use advanced diagnostic technology to match every patient with the lens best suited to their eyes and their life. We invite you to schedule a comprehensive cataract consultation so your Cataract Surgeon can review your eye health, discuss all available lens options, and help you move forward with clarity and confidence.

What our Patients Says

Dr. Griffiths has been my Opthamologist for many years. I have been very 🙏🏾 pleased with my procedures performed by Dr. Griffiths as well as my medical care provided by Dr Griffiths. Not only are her knowledge and skills excellent, but her bedside? care is wonderful.

Elvira

Highly recommend! My cataract surgery was outstanding. Of all surgeons I interviewed, she was the one who fully educated me to decide. Surgical process was efficient, organized, and results excellent.

Rene' Pettit

Dr. Griffiths was communicative, explained her thoughts plainly, listened to my symptoms and took a thorough note. She gave comprehensive tests and has been quick to follow up with more where needed.

Michelle Franz

Dr. Callahan is extremely patient, great at explaining things, and does not try to pressure you to take a particular course of action.

Gloria Federico

Dr Griffiths and team are great. Dr Griffiths is a great doctor. She was recommended by my daughter. Excellent choice.

Mary Dean

After years with other ophthalmologists, I found Dr. Griffiths, dedicated, professional, and thorough. Her in-depth tests and consultations ensure my vision stays healthy, which is very important to me.

Denise kelly

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