Intraocular Lenses
Cataract surgery does more than remove a cloudy lens. During the procedure, your eye’s
natural lens is replaced with a clear artificial lens called an intraocular lens, or IOL. This new
lens remains in your eye permanently and helps focus light so you can see clearly again.
At Boston Eye Physicians and Surgeons, we offer several IOL options to meet the different
visual needs of our patients. Some lenses provide clear vision at one distance, while others can
correct astigmatism, expand your range of vision, or even be adjusted after surgery.
There is no single lens that is best for everyone. Our ophthalmologists consider your eye health,
prescription, lifestyle, and visual priorities before recommending the options that may be right for
you.
Standard Monofocal IOL
A standard monofocal IOL is designed to provide clear vision at one primary distance. Most
patients choose to have their vision focused for distance, allowing them to see more clearly
while driving, watching television, or looking across a room. Reading glasses are typically still
needed for close tasks such as reading a book or using a phone.
A monofocal lens can also be focused for near vision. In some cases, we may recommend
focusing one eye for distance and the other for closer vision. This approach, known as
monovision, can reduce dependence on glasses for some patients.
Standard monofocal lenses are a reliable option for patients who want clear vision at a selected
distance and do not mind wearing glasses for other activities.
Toric IOL
Astigmatism occurs when the front surface of the eye has an irregular curve. Instead of being
evenly rounded, the cornea is steeper in one direction than another. This can cause vision to
appear blurred or distorted.
For patients with corneal astigmatism, we offer toric IOLs. These lenses are designed to correct
astigmatism while replacing the cloudy natural lens. Addressing astigmatism during cataract
surgery can improve the sharpness of your uncorrected vision and reduce your dependence on
distance glasses.
Most toric lenses still provide their clearest vision at one primary distance. For example, a toric
lens focused for distance may improve vision for driving, but reading glasses may still be
needed for close work.
Before surgery, we take detailed measurements of the shape of your cornea to determine
whether a toric IOL would benefit you.
Light Adjustable Lens
Boston Eye Physicians and Surgeons also offers the Light Adjustable Lens, or LAL. Unlike
traditional IOLs, the power of the LAL can be refined after cataract surgery.
With most lenses, the prescription is selected before surgery using careful measurements of the
eye. These calculations are highly accurate, but every eye heals somewhat differently. The LAL
allows us to adjust your vision after your eye has healed and you have had an opportunity to
experience the results.
Adjustments are made through a series of specialized light treatments. Once you and your eye
care team are satisfied with your vision, final treatments lock the lens into place.
The LAL may be especially appealing to patients who want a greater degree of customization. It
may also be considered for some patients who have previously undergone LASIK or another
refractive procedure.
Choosing the LAL requires additional visits after cataract surgery. Patients must also wear
special UV-protective glasses during the adjustment period. Our team will guide you through
each stage of the process, from your initial measurements to the final light treatment.
Multifocal IOL
For patients interested in reducing their dependence on glasses at multiple distances, we also
offer multifocal IOLs. These lenses use different focusing zones to provide vision for a wider
range of activities, including driving, working at a computer, and reading.
The main advantage of a multifocal IOL is the potential for greater freedom from glasses.
However, these lenses also involve some tradeoffs. Some patients notice glare, halos around
lights, or reduced contrast, especially while driving at night.
Not every eye is a good candidate for a multifocal lens. The health of the cornea, retina, optic
nerve, and surface of the eye can all affect the quality of vision it provides. Our ophthalmologists
perform a complete evaluation to determine whether a multifocal lens is a suitable option for
you.
Which Lens Should I Choose?
The best IOL is not necessarily the newest or most advanced option. It is the lens that best
matches the health of your eyes and the way you use your vision.
During your cataract evaluation, we will ask about the activities that matter most to you. You
may want clear distance vision for driving, a wider range of vision for an active lifestyle, or less
dependence on reading glasses. We will also evaluate whether you have astigmatism, previous
eye surgery, or other conditions that may influence your options.
Although advanced IOLs can reduce your need for glasses, no lens can guarantee that you will
never need them. Glasses may still be helpful for small print, prolonged reading, nighttime
driving, or other visually demanding activities. Our goal is to provide realistic expectations and
help you make a choice that fits your individual needs.
At Boston Eye Physicians and Surgeons, our cataract surgeons combine advanced lens
technology with personalized care. From standard monofocal lenses to toric, multifocal, and
Light Adjustable Lenses, we offer a range of options to help you make the most of your vision
after cataract surgery.
