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Subretinal microsurgery with gradient index endoscopes
F H Koch1, K P Luloh, A J Augustin
1University Eye Clinic Frankfurt, Germany.
Summary
This study introduces a new endoscopic technique for subretinal surgery, enabling direct visualization and improving accuracy. This method avoids retinal incisions, enhancing surgical safety and precision for various retinal conditions.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Medical Devices
Background:
- Current subretinal surgery requires a retinotomy, limiting visualization and relying on tactile feedback.
- Existing micro-endoscopes are often too large or lack adequate resolution for intraocular use.
Purpose of the Study:
- To evaluate a novel 20-gauge gradient index (GRIN) endoscope for direct visualization during subretinal surgery.
- To assess the feasibility and benefits of endoscopic subretinal surgery compared to conventional techniques.
Main Methods:
- A 20-gauge GRIN endoscope was introduced into the subretinal space through a scleral/choroidal incision, posterior to the pars plana.
- Surgical instruments were inserted through a separate sclerotomy for subretinal manipulation under endoscopic guidance.
- The technique involved ballooning the retina without creating a full retinal hole.
Main Results:
- Direct visualization of subretinal structures was achieved, allowing for precise dissection of neovascular membranes.
- Identification and coagulation of feeding choroidal vessels were facilitated, a challenge in conventional surgery.
- The procedure successfully avoided the need for a retinotomy, minimizing retinal damage.
Conclusions:
- Endoscopic subretinal surgery with a 20-gauge GRIN endoscope offers direct visualization, enhancing surgical accuracy and safety.
- This technique represents a significant advancement over conventional methods, improving the facility of subretinal procedures.