Lenstec SBL-3 ClearView 3 Multifocal IOL
What the SBL-3 Multifocal Lens Is
An intraocular lens replaces the cloudy natural lens that cataract surgery removes. The Lenstec SBL-3 is a segmented bifocal IOL with two refractive zones, one for distance and one for near, per FDA SSED data (2022). The design differs from the diffractive concentric-ring design used by most multifocal IOLs.
The lens received FDA premarket approval on July 22, 2022, per FDA records. It is made by Lenstec, Inc. of St. Petersburg, Florida. The international brand name for the same segmented bifocal optic is ClearView 3, used in markets outside the U.S.
The optic uses one zone for distance focus and another zone for near focus. The two zones share the same optic surface. Light passes through the zone that matches what you are looking at, and your brain learns to combine the images.
This design tends to produce fewer halos around lights at night compared with diffractive multifocal lenses. The trade-off is that you may notice the boundary between the two zones in some lighting.
The SBL-3 is for visual correction of aphakia in adult cataract patients with 1 diopter or less of preoperative corneal astigmatism, per FDA labeling (2022). Patients with stronger astigmatism may need a separate plan, since this lens is not built to correct astigmatism on its own.
Your surgeon will check your astigmatism level during the pre-op exam. If you have more astigmatism than the labeling allows, your surgeon may suggest a different lens type or pair this lens with another step.
The U.S. pivotal trial randomized 495 patients to a basic monofocal control or the SBL-3, per FDA SSED data (2022). At six and 12 months after surgery, the SBL-3 eyes had better near visual acuity than the controls. Distance and intermediate acuity were comparable to the monofocal group.
SBL-3 patients also reported less reliance on near-vision glasses or contact lenses than monofocal patients. The lens fits patients who want to lower their reading-glasses use after cataract surgery.
Who Is a Good Fit for the SBL-3
Patients with cataracts who want to lower their reading-glasses use may benefit. The lens fits patients with little corneal astigmatism (1 diopter or less) and who want clear distance plus a useful near point.
You should have realistic goals. The bifocal design adds a near focus point but does not give a smooth focus range like a young natural lens. Some patients still need readers for very small print.
Some eye conditions cap the benefit of any multifocal IOL. Macular degeneration, glaucoma, and diabetic eye disease can each limit your final vision. Severe dry eye and advanced corneal disease can change the lens recommendation.
Patients with more than 1 diopter of corneal astigmatism are not in the labeled group for this lens. If your astigmatism is higher, your surgeon may suggest a different lens or an extra step to lower the astigmatism.
Your daily tasks help shape the choice. If you read often and want to skip readers for most tasks, the bifocal design works well. If you do most of your work at a computer, an enhanced monofocal or EDOF lens may fit better.
- You read books or use phones often during the day
- You have minimal corneal astigmatism (1 diopter or less)
- You want fewer halos than a diffractive multifocal can give
- You are open to learning to use the two zones of the optic
- You have realistic goals about near and distance vision
Patients with prior LASIK or PRK can sometimes still receive a bifocal IOL, although outcomes are less predictable. The team uses special math to pick the right power because past corneal surgery changes the corneal shape. Your surgeon will discuss whether this lens type fits your eye history.
If you have other corneal conditions, the surgeon may suggest a different lens. A clean cornea helps the bifocal optic give the result you want.
Pre-Operative Tests and Planning
The pre-op exam checks every part of your eye. The visit includes a dilated look at the back of the eye, an eye-pressure check, and a slit-lamp look at the cornea and natural lens. The team also rates your tear film and pupil size.
- Dilated exam to view the retina and optic nerve
- Eye-pressure check to screen for glaucoma
- Slit-lamp exam of the front of the eye
- Tear-film and dry eye check
Corneal topography draws a detailed map of the front of the eye. The map shows steep and flat areas, which is key for picking the right lens power. Optical biometry measures the length of the eye and the curve of the cornea.
These steps feed into the math that chooses the lens power. Many clinics take the readings on more than one visit to confirm the values match.
Modern formulas use eye length, corneal curve, and the likely lens position to find the best lens power. For a toric variant, the team also calculates the angle the lens should sit at to cancel the astigmatism.
The goal is to land as close to the target as possible. Your team will tell you what the realistic outcome looks like and where small surprises may show up.
Drop schedules vary by surgeon. Some prescribe antibiotic drops the day before surgery, while others start them the morning of surgery. If you wear contacts, the team may ask you to stop them before measurements so the cornea returns to its true shape.
You will get a list of which medicines to take or pause. Plan to have a friend or family member drive you home. Arrive with a clean face, no makeup, and comfortable clothes.
What Happens During Surgery
Cataract surgery is an outpatient procedure that takes about 15 to 30 minutes per eye. You spend a few hours at the surgery center for prep and recovery. The surgeon makes a small cut at the edge of the cornea, breaks up the cloudy lens with ultrasound, and removes it.
The folded IOL slides through that same cut and unfolds in the natural lens pocket. Most cuts seal on their own without stitches. Numbing drops keep the eye comfortable.
The surgeon places the lens in the natural lens pocket. For a toric variant, the surgeon turns the optic until it sits along the steep meridian of your cornea. Some surgeons use ink marks made before surgery, while others use digital overlay systems that track the eye in real time.
- The lens is placed in the natural lens pocket
- For a toric variant, the optic is rotated to match the steep axis of your astigmatism
- The position is checked again before the cut is sealed
- The lens arms grip the capsule and resist later movement
Most cataract surgeries use numbing drops on the surface of the eye. You may also get a mild sedative through an IV to help you relax. Some patients receive an injection around the eye for deeper numbing, though this is less common today.
You stay awake for the surgery, but you should feel calm. After the surgery ends, you rest in a recovery area for a short time and then go home the same day.
Recovery and Aftercare
Vision often feels blurry or hazy on the first day as the eye starts to heal. Many patients see better within 24 to 48 hours, although full clarity can take several weeks. Mild scratchiness, light sensitivity, or watery eyes are normal early on.
You will wear a clear shield over the eye, mainly while sleeping, to keep from rubbing it by accident. Most people return to light tasks the day after surgery, but skip heavy work and follow the surgeon's plan. Do not drive until your surgeon says it is safe.
You will use antibiotic and anti-inflammatory drops on a set schedule for several weeks. The drops fight infection and ease inflammation while the eye heals. Stick to the schedule even when the eye feels fine.
- Wash your hands before each dose
- Tilt your head back and pull down the lower lid
- Avoid touching the dropper tip to your eye or fingers
- Wait a few minutes between different drop types
- Use a checklist or phone reminder to track doses
For the first one to two weeks, avoid heavy lifting, bending below your waist, and any activity that could push germs or dirt into the eye. Skip pool and hot-tub use during this window. Some surgeons keep this rule in place longer than two weeks.
Most patients can read, watch television, and use a computer as soon as they feel up to it. Take frequent breaks to ease eye strain. Many people return to office work within a few days if their job is not physical.
Some symptoms need a fast call to your eye care team. Sudden vision loss, sharp or rising pain, flashes of light, a shower of new floaters, or a curtain across your vision all warrant a same-day check.
Worsening redness, drainage, or rising light sensitivity also need a call. The team would rather see you for a false alarm than miss a true emergency.
Long-Term Vision and Lens Stability
Most patients notice clear gains in vision in the first week. The brain adapts to the new lens over the first month, a process called neuroadaptation. Final vision often settles by four to six weeks.
Vision may shift during that span as swelling fades and the tear film calms down. Once vision is stable, your eye doctor can write a final glasses prescription if needed.
Most patients keep readers handy for very small print or for long reading sessions. Many patients use cheap drugstore readers in handy spots around the home and office.
If you prefer, your eye doctor can write a custom reading prescription. The choice between drugstore readers and a custom pair depends on your daily reading load.
The lens arms are shaped to grip the inside of the natural lens capsule. The grip helps the optic stay in the right spot over time. In most patients, the lens stays steady for years.
If a toric optic shifts a few degrees, vision may blur. This is uncommon, but if it happens, your surgeon can check the angle and decide whether a quick repositioning is needed.
The optic is built for long-term use and does not break down under normal conditions. Most patients enjoy steady vision for many years.
One late issue is cloudy growth on the back of the lens capsule, which can show up months or years after surgery. A short laser visit, called a YAG capsulotomy, clears the growth without changing the IOL itself.
Common Questions About the SBL-3 IOL
A diffractive multifocal splits each ray of light across multiple focus points using ring-shaped patterns on the optic. A segmented bifocal uses two refractive zones on the same optic, with one zone for distance and one for near. The segmented design tends to produce fewer halos at night.
Some patients still need readers for the smallest print, especially in dim light. The bifocal adds a near focus point that covers most reading, but it is not a perfect match for every text size. Many patients use cheap drugstore readers when needed.
Most plans, including Medicare, cover standard cataract surgery and a basic monofocal IOL. A multifocal IOL is usually billed as a patient-pay upgrade because insurance views the broader focus range as elective. Our team will verify your benefits before surgery.
Some patients notice a brief sense of two images, since the brain needs to learn how to use the two zones. The effect usually settles in the first weeks. If it stays bothersome past two months, your surgeon can check the optic position and other factors.
The lens is FDA-approved for patients with 1 diopter or less of corneal astigmatism. If your astigmatism is higher, your surgeon may suggest a different lens type or pair this lens with a step that lowers the astigmatism. Your surgeon will go over the right plan for your eyes.
Most patients adapt over the first month. If near vision still misses your target after healing, the team first checks for the cause. Sometimes new readers, dry-eye care, or a small refractive procedure can fix the gap.
Talk to Your Surgeon About the SBL-3 IOL
If you have cataracts and want to learn whether the SBL-3 segmented bifocal fits your eyes, call our office to set up a consult. Our team will review your tests, walk through your options, and build a plan that matches your goals.