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Combining Cataract Surgery with iStent, Hydrus, or Canaloplasty

 

Many glaucoma patients undergoing cataract surgery choose to have a MIGS procedure at the same time – commonly insertion of devices like the iStent inject, Hydrus microstent, or a canaloplasty procedure. This combined approach can be very efficient: the cataract is removed to restore vision, and in the same sitting a tiny implant or treatment is done to help drain fluid and lower eye pressure. The iStent and Hydrus are minute tube-like implants (iStent is often compared to a grain of rice in size) placed into the eye’s natural drain (trabecular meshwork) to create a better outflow pathway. Canaloplasty involves threading a microcatheter through the circular drainage canal (Schlemm’s canal) to open it up, much like angioplasty for a clogged artery (no stent left behind, in that case). Why combine these with cataract surgery? Because it can reduce intraocular pressure a bit more than cataract surgery alone and can decrease the need for glaucoma eye drops. Studies have shown, for example, that cataract surgery plus an iStent leads to more patients being medication-free compared to cataract surgery by itself. From the patient’s perspective, the addition of, say, an iStent or Hydrus only adds a few minutes to the procedure and doesn’t change the recovery much – you might not even feel or see the device, but it’s working inside. These MIGS devices have a good safety profile, especially when done with cataract surgery, because the eye is already opened for lens removal. A common question is, “Will I notice the stent or have to take care of it?” The answer is no – these implants are entirely internal and maintenance-free. Over time, they can help maintain lower pressure, potentially delaying or avoiding more aggressive glaucoma surgeries. Canaloplasty (sometimes done with a gadget like the OMNI system) similarly can be combined to internally dilate and flush the drain with minimal extra impact. Visualize a plumber clearing out your house pipes while replacing a faucet; two improvements with one entry. This combo is most effective for mild to moderate glaucoma. In more advanced cases, stronger surgeries might be needed instead. Your surgeon will recommend what’s suitable, but combining cataract surgery with MIGS like iStent or Hydrus is now very common and has the benefit of tackling vision clarity and glaucoma stability together. Visual suggestion: a medical illustration highlighting where an iStent and Hydrus sit in the eye (perhaps an inset showing the tiny stent in the drainage angle) and a simple schematic of canaloplasty (a microcatheter circumnavigating the eye’s drain), to show these interventions in context during cataract surgery.

 

doctors looking through a microscope analyzing MIGS procedures
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