DSEK Surgery: A Targeted Approach to Corneal Transplantation
What Is DSEK and How Does It Work?
DSEK is a partial-thickness corneal transplant that targets only the innermost layer of the cornea, called the endothelium. Rather than replacing the entire cornea, this approach preserves your healthy outer and middle layers while introducing new, functioning donor cells where they are needed most.
The endothelium is a single layer of pump-like cells lining the back surface of the cornea. These cells continuously move fluid out of the cornea to keep it clear and properly shaped. When endothelial cells fail or die, the cornea swells and becomes cloudy, causing blurred or hazy vision. Unlike most cells in the body, corneal endothelial cells do not regenerate on their own, which is why a transplant is often the only lasting solution.
A traditional corneal transplant, called penetrating keratoplasty, replaces the entire cornea and requires surface sutures that remain in place for a year or more. DSEK replaces only the damaged endothelial layer through a small incision with no surface stitches. This preserves the natural shape of your cornea, reduces the risk of astigmatism, and results in a structurally stronger eye during healing.
DSEK is most commonly recommended for Fuchs' endothelial dystrophy, a hereditary condition in which endothelial cells gradually deteriorate over time. It is also used to treat pseudophakic bullous keratopathy, which is corneal swelling that can develop after cataract surgery. Other conditions such as posterior polymorphous dystrophy and corneal failure from various causes may also be addressed with DSEK when the outer layers of the cornea remain healthy.
Who May Be a Candidate for DSEK?
DSEK is intended for patients whose corneal problems are primarily located in the endothelial layer. A thorough evaluation by a Cornea Specialist is the only way to determine whether this procedure is the right fit for your condition and your overall eye health.
The most common early sign of endothelial cell loss is blurry or hazy vision that tends to be worse in the morning and clears somewhat as the day goes on. This pattern occurs because fluid accumulates in the cornea overnight while the eye is closed. Other symptoms can include sensitivity to glare and halos around lights, a feeling of pressure or discomfort in the eye, and vision that fluctuates unpredictably throughout the day.
Most adults who have an intact and otherwise healthy outer cornea but failing endothelial cells are potentially good candidates for DSEK. Your Cornea Specialist will evaluate your eye pressure, rule out active infection, and assess conditions such as uncontrolled glaucoma or severe dry eye that could affect healing. Age alone is not a barrier, and many patients in their 60s, 70s, and beyond undergo this procedure successfully.
Bringing a complete picture of your health history helps your Cornea Specialist plan your care accurately. Be prepared to discuss any previous eye surgeries or injuries, current medications including blood thinners, and any systemic conditions such as diabetes. It is also helpful to describe your lifestyle and visual goals so your care team can set realistic expectations and tailor your treatment plan accordingly.
The DSEK Procedure, Step by Step
DSEK is performed as an outpatient procedure under local anesthesia, meaning you are awake but your eye is completely numb and comfortable. The surgery typically takes between 45 and 60 minutes, and you will return home the same day after a brief observation period.
In the days leading up to surgery, your care team will take detailed measurements of your cornea and may ask you to begin antibiotic eye drops to reduce infection risk. Certain medications, particularly blood thinners, may need to be temporarily adjusted in coordination with your other physicians. On the day of surgery, arrange for someone to drive you home and wear comfortable clothing. Your surgical team will walk you through each step so you feel fully prepared.
Your surgeon begins by making a small incision at the edge of the cornea. Using precision instruments, they carefully remove the damaged endothelial layer from the inside surface of your cornea. The prepared donor tissue, containing millions of healthy endothelial cells, is folded and gently inserted through the small opening. Once inside the eye, the surgeon unfolds and positions the tissue, then introduces a small air bubble that holds the graft against the cornea while the two surfaces begin to adhere.
Donor corneal tissue is obtained through certified eye banks that follow strict safety protocols, including testing for infectious diseases and verifying tissue quality before it is approved for use. The donor tissue provides the healthy endothelial cells your cornea needs to pump out excess fluid and stay clear. The tissue is carefully sized to fit your eye, and your surgeon selects tissue that meets quality standards for your specific case.
Recovery After DSEK
Recovery from DSEK is generally faster and more comfortable than recovery from a full-thickness corneal transplant. Following your care team's instructions closely in the days and weeks after surgery plays a significant role in how well and how quickly your vision returns.
Immediately after surgery, you will be asked to lie flat on your back as much as possible for the first day or two. This positioning allows the air bubble to press the donor tissue firmly against your cornea as the initial attachment forms. Your eye will be covered with a protective shield, and your vision will be noticeably blurry during this time. Mild discomfort or a scratchy feeling is common, but significant pain is not typical.
You will be prescribed antibiotic and steroid eye drops to prevent infection and reduce inflammation. These should be used exactly as directed for as long as your doctor recommends. Avoid rubbing your eye, wear the protective shield while sleeping, and refrain from heavy lifting, bending over, or strenuous exercise for at least two weeks. If you experience sudden pain, increased redness, or a noticeable drop in vision, contact your care team right away.
Many patients notice an improvement in clarity within the first week after surgery. Vision continues to improve over the following months as the donor cells settle in and the cornea stabilizes. Most patients reach their best vision between three and six months after surgery. A large proportion of patients with Fuchs' dystrophy achieve vision of 20/40 or better, which is often sufficient for tasks such as driving.
The air bubble used during surgery and the steroid eye drops prescribed afterward can temporarily raise eye pressure in some patients. Your Cornea Specialist will monitor your eye pressure at each follow-up visit and can adjust your medications if needed to keep it within a safe range. This is a well-recognized and manageable aspect of recovery, and it does not affect the long-term outcome for most patients.
Benefits and Risks of DSEK
DSEK offers meaningful advantages over older transplant methods, particularly for patients with endothelial disease. Like any surgical procedure, it carries risks that are important to understand so you can make a fully informed decision with your Cornea Specialist.
Because DSEK does not require surface sutures and preserves most of your natural corneal tissue, the eye heals with greater structural stability and a lower risk of wound complications. The partial-thickness nature of the graft also reduces surgically induced astigmatism, which is a common source of distorted vision after full-thickness transplants. Rejection rates for DSEK are significantly lower than for traditional transplants, and when early rejection signs are caught and treated, the graft can often be preserved.
The most common complication after DSEK is graft detachment, in which the donor tissue partially separates from the recipient cornea. This occurs in approximately 15 to 25 percent of cases and can usually be corrected with a straightforward in-office procedure called rebubbling, where additional air is injected to reposition the graft. Primary graft failure, meaning the donor tissue does not function as expected, occurs less frequently and may require a repeat procedure. Infection is rare but serious if not treated promptly. Steroid eye drops can elevate eye pressure in some patients, and this is monitored and managed at follow-up visits.
DMEK, which stands for Descemet's Membrane Endothelial Keratoplasty, is a thinner variation of endothelial transplantation that transplants only the endothelial membrane itself without the supporting stromal tissue included in DSEK. DMEK may offer a modest visual advantage in some patients but carries a higher rate of graft detachment and is technically more demanding. For patients with complex anatomy or prior surgical history, DSEK may be the more appropriate and predictable choice. Your Cornea Specialist will discuss which option is best suited to your specific situation.
Frequently Asked Questions
The following questions address some of the more nuanced concerns our patients often have as they prepare for DSEK and navigate recovery.
Yes, and in fact one of the most common reasons DSEK is performed is to treat corneal swelling that develops after cataract surgery, a condition called pseudophakic bullous keratopathy. Your Cornea Specialist will confirm that your intraocular lens implant is stable and well-positioned before proceeding, but prior cataract surgery is not a barrier to this procedure.
Most patients will still benefit from glasses, particularly for reading or fine detail work. Some patients experience a mild shift toward farsightedness after DSEK due to the slight change in corneal curvature introduced by the donor tissue. A stable prescription can typically be determined three to six months after surgery, once the cornea has fully settled.
Graft detachment, when it occurs, most often happens in the first few weeks after surgery. If you notice a sudden increase in blurriness or a return of the foggy quality you had before surgery, contact your Cornea Specialist promptly. A rebubbling procedure, which involves injecting a small amount of air into the eye in a clinical setting, can usually reposition the tissue and allow it to adhere successfully.
Antibiotic drops are typically used for a few weeks following surgery to prevent infection during the initial healing period. Steroid drops are continued for a longer period, often tapering over the course of a year or more, to reduce the risk of graft rejection. The exact schedule will be tailored to your individual situation, and it is important not to stop any drops without guidance from your care team, even if your eye feels comfortable.
Graft rejection can occur at any point after surgery, though the risk is lower with DSEK than with full-thickness transplants. Long-term graft failure, distinct from acute rejection, can develop years later in a smaller percentage of patients, particularly those with certain risk factors such as previous glaucoma surgery. This underscores the importance of keeping your follow-up appointments even after your vision has stabilized, so that any changes can be detected and addressed early.
In most cases, limited improvement is related to the graft settling process, residual corneal irregularity, or other conditions affecting the eye such as macular degeneration or a cataract. If your vision is not progressing as anticipated, your Cornea Specialist will conduct a thorough evaluation to identify contributing factors. In some cases, a second procedure or an adjustment to your treatment plan can meaningfully improve the outcome.
Care for Your Cornea at Rhode Island Eye Institute
Our Cornea Specialists at Rhode Island Eye Institute bring fellowship training from some of the most respected programs in the country, combined with decades of surgical experience and academic appointments at Brown University. Whether you are just beginning to notice symptoms of corneal disease or you have already been told you need a transplant, we are here to guide you through every step with expertise and personalized attention. We welcome patients from across Rhode Island and southern Massachusetts and encourage you to schedule a consultation to learn whether DSEK or another treatment is the right path forward for you.