Cataract Surgery in Glaucoma Patients
How Cataract Surgery Affects Eye Pressure
Cataract surgery does more than restore clear vision. For patients with glaucoma, it can also play a meaningful role in lowering the pressure inside the eye, which is one of the main concerns in glaucoma management.
The natural lens sits behind the iris, which is the colored part of the eye. As a cataract grows, the lens becomes thicker and pushes the iris forward. This can partially block the eye's drainage system, causing fluid to build up and pressure to rise.
When the surgeon removes the cloudy lens and replaces it with a thin, clear implant, the drainage pathway opens up and fluid flows more freely. This is why people with angle-closure glaucoma, a type where the drain is especially restricted, often see the greatest pressure reduction after surgery.
Patients with open-angle glaucoma, high starting eye pressure, and angle-closure glaucoma can all benefit from the pressure-lowering effect of cataract surgery. Eyes that begin with the highest pressure tend to experience the largest reduction. This lasting benefit is one reason your eye care provider may recommend cataract surgery earlier when glaucoma is also present.
Even though pressure generally falls over the long term, it can briefly spike in the hours immediately after the procedure. Glaucoma patients are more likely to experience this than people without the condition. Our team monitors pressure closely in the hours following surgery and can quickly address any spike with eye drops. Knowing this is a possibility helps patients feel prepared rather than alarmed.
Combining Cataract Surgery With a Glaucoma Procedure
In many cases, a glaucoma treatment can be performed at the same time as cataract removal. This combined approach allows patients to address both conditions in a single procedure, reducing recovery time and often improving long-term pressure control.
MIGS stands for minimally invasive glaucoma surgery. During this approach, a tiny device is placed or a small pathway is created inside the eye to help fluid drain more effectively. It is well suited for mild to moderate open-angle glaucoma and is performed through the same small incision already made for the cataract, so no additional wound is needed. The procedure adds only a few minutes to the overall surgery time, and recovery closely mirrors standard cataract surgery.
Research shows that roughly two-thirds of the pressure reduction and reduction in glaucoma drop use comes from the cataract removal itself, while the MIGS step accounts for approximately one-third. Together, the combined approach can produce meaningful, lasting results that neither step might fully achieve on its own.
When pressure stays well controlled after combined surgery, some patients are able to reduce or even stop their daily glaucoma eye drops. Fewer drops means less irritation, less dry eye caused by drop preservatives, and a simpler daily routine. Many patients find these day-to-day improvements just as valuable as the changes they see on their pressure readings.
Clearer vision combined with better pressure control can have a real impact on everyday life. Studies have shown that more patients who had combined MIGS and cataract surgery reported an improved quality of life at the two-year mark compared to those who had cataract surgery alone. Fewer pharmacy visits, less daily discomfort, and sharper sight all contribute to this meaningful difference.
Recovery and Follow-Up Care
Recovery after cataract surgery with or without a combined glaucoma step is generally straightforward. Knowing what to expect in the weeks that follow helps you heal well and protect your results.
Most patients notice clearer vision within a few days. Some redness, mild achiness, and light sensitivity are normal and expected early on. Your provider will prescribe eye drops to prevent infection and reduce swelling, and you may still need your glaucoma drops during this period. Avoid rubbing the eye, lifting heavy objects, or swimming until you are cleared to do so. Wearing the protective eye shield at night helps prevent accidental pressure on the eye while you sleep.
You will typically have a follow-up visit within one to two days after surgery, then at one week, one month, and three months. Eye pressure is checked at each appointment to track how the eye is responding. If pressure remains consistently low, glaucoma medications may be reduced gradually, one at a time, always guided by a pressure reading. Never stop or adjust your drops on your own between visits. Bringing all your drop bottles to each appointment helps the care team track exactly what you are using.
Contact our office right away if you notice sudden vision loss, sharp or severe eye pain, a significant increase in floaters, or flashing lights. These symptoms can indicate a complication that needs prompt attention. Mild fluctuations in vision and a gritty or sandy feeling are common in the first few weeks and are not usually a concern. When in doubt, call us. It is always better to check than to wait.
Risks Specific to Glaucoma Patients
Cataract surgery is considered very safe, but patients with glaucoma have a few additional considerations to be aware of. Our team plans carefully for each of these so that risks remain as low as possible.
The most common added risk for glaucoma patients is a temporary rise in eye pressure shortly after surgery. Our team has a clear plan for monitoring and treating this quickly, often within the same day and without any return to the operating room. In some cases, eye drops given before the procedure can reduce the likelihood of a spike occurring at all.
Patients who have used glaucoma drops for a long time sometimes have a drier eye surface, because preservatives in some medications can affect the surface of the eye over time. This can slow surface healing and contribute to a gritty feeling after surgery. Using your prescribed drops as directed, adding lubricating drops when needed, and attending every follow-up visit are the best ways to support smooth healing. Let your provider know if dryness is bothering you, as there are additional options that can help.
When glaucoma has progressed significantly, the optic nerve has less tolerance for stress or pressure swings. In these situations, your provider will carefully weigh the benefit of improved vision against any small risks that come with surgery. A staged approach, meaning the cataract and glaucoma procedures done separately, or a more involved glaucoma surgery may be the better path. Your eye care team will explain all available options and the reasoning behind each recommendation.
Frequently Asked Questions
These are some of the questions patients most often ask when preparing for cataract surgery alongside glaucoma management.
Cataract surgery can lower eye pressure, which helps protect the optic nerve, but it is not a standalone treatment for glaucoma. Most patients will still need ongoing monitoring and, in many cases, continued medication or other glaucoma care. The pressure reduction from surgery is a helpful addition to your glaucoma management plan, not a replacement for it. Lifelong follow-up remains essential even when surgery goes very well.
Yes, though the approach may be different. When glaucoma is in a more advanced stage, your provider may recommend a stronger glaucoma procedure or schedule the two surgeries separately rather than combining them. The decision depends on how much pressure needs to come down and how stable the optic nerve currently is. Your care team will outline a clear, personalized plan and explain the timeline for each step.
For many patients, the lower pressure holds for several years. The duration depends on factors including the type of glaucoma, the starting pressure level, and whether a MIGS device was placed. Regular follow-up visits allow the team to track pressure trends over time. If pressure begins to rise again, medication can be restarted or adjusted before any damage to the optic nerve occurs.
The answer varies from patient to patient. Some people are able to stop drops entirely after a combined procedure, while others need fewer drops than before, and a smaller group continues with the same regimen. The outcome depends on how severe the glaucoma is and how much the surgery lowers pressure in your specific case. Changes to your drop schedule are always made gradually and only after a pressure check confirms it is safe to do so.
The additional risk is generally small. The main concern is a short-term pressure spike in the hours after surgery, and our team has effective tools to monitor for and treat this quickly. Thorough pre-surgical planning, close coordination among your care providers, and consistent attendance at follow-up visits are the most important factors in keeping risk low. The large majority of patients with glaucoma do very well with cataract surgery.
For most patients, recovery is very similar to standard cataract surgery alone. The MIGS portion typically adds only a few minutes to the procedure and requires no additional incisions, so drop schedules, activity restrictions, and healing timelines are largely the same. Some patients notice mild temporary blur if a gel or device is placed inside the eye, but this generally resolves within a few days.
Schedule a Consultation at Associated Eye Physicians & Surgeons
If you are managing both cataracts and glaucoma, our team at Associated Eye Physicians & Surgeons is here to help you understand all of your options. We take the time to review your eye pressure, optic nerve health, and vision goals before recommending a treatment path. Patients across New Jersey trust us to provide thorough, personalized care, and we look forward to guiding you through every step of the process.
Experienced, punctual, thorough, positive and supportive staff that create a visit where patients feel as an important part of the group.
Diane Jobes
Dr. Garrana is fantastic! She gave very clear and thoughtful instructions for pre and post surgery. she is very responsive even outside of office hours. I Would highly recommend if anyone wants to get lasik surgery.
Lynn W.
Very friendly staff, very fast, very efficient!
Tim McDonald
Excellent attentive service provided expeditiously! True professionals to deal with give you the feeling of total confidence in their ability to help you!
michael scalzo
I think I may have seen every doctor and nurse over the years, and they all make me feel very secure in their hands. With my cataract surgeries, Dr. Hosler is the best!
Steven Thornburg