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Minimal Vitrectomy and ILM Flap with Sodium Hyaluronate Gel for MH
Sponsor: Jie Zhong
Summary
The purpose of this clinical trial is to compare the prognostic validity of two different surgical approaches: minimal posterior pole vitrectomy combined with a sodium hyaluronate gel-covered internal limiting membrane(ILM) flap with balanced saline filling and postoperative supine position, versus conventional vitrectomy combined with ILM flap flap coverage with sterile air filling and postoperative prone position. The main question it aims to answer is: Whether patients with macular hole have the same or even better prognosis with minimal posterior pole vitrectomy combined with sodium hyaluronate gel covered flip ILM flap accompanied by balanced salt solution filling accompanied by postoperative supine position than with conventional macular hole surgery. Participants will: The control group undergoes conventional vitrectomy combined with internal limbal flap coverage accompanied by sterile air filling of the vitreous cavity and three days of postoperative surgery in strict supine position. The study group undergoes minimal posterior pole vitrectomy combined with sodium hyaluronate gel-assisted flap of the inner border membrane accompanied by 24 hours of postoperative surgical treatment in a non-strict supine position. Participants of this study come to Sichuan Provincial People's Hospital for follow-up examinations at 1 day, 3 days, 1 week, 1 month, 3 months, and 6 months postoperatively in the 23rd clinic of the Sichuan Provincial People's Hospital for review of visual acuity, intraocular pressure, fundus photography, optical coherence tomography angiography, microfluidic field of view (at 6 months postoperatively), and slit-lamp examination.
Official title: Clinical Study of Minimal Posterior Pole Vitrectomy and Fixing the Inverted Inner Limiting Membrane Flap with Sodium Hyaluronate Gel for Macular Hole
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
52
Start Date
2024-11-01
Completion Date
2027-06-30
Last Updated
2024-11-12
Healthy Volunteers
No
Conditions
Interventions
minimal posterior pole vitrectomy combined with a sodium hyaluronate gel-covered internal limiting membrane(ILM) flap with balanced saline filling and postoperative supine position
Vitrectomy of the posterior pole within the vascular arch was performed by a standard 25G ciliary flattening three-way tract procedure, followed by injection of a small amount of tretinoin suspension (TA) to mark the posterior vitreous cortex, which was excised. The inner limiting membrane (ILM) of the macular surface was stained with indocyanine green (ICG, 2.5 mg/ml), and the ILM around the hole was peeled off, leaving a semicircular piece of ILM attached to the hole, and then the single ILM flap was folded and covered with MH. 0.2 to 0.3 mL of hyaluronic acid gel (Bausch \& Lomb, Iviz) was injected over the inverted ILM flap using perfluorocarbon liquid for complete coverage. The perfluorocarbon liquid was aspirated. Postoperatively, the patient was advised to remain in a non-emergent supine position for 24 hours.
Conventional vitrectomy combined with inner limiting membrane flap flip coverage with sterile air filling and postoperative prone position
A standard 25G ciliary flattening three-way tract procedure was taken to perform posterior and midperipheral vitrectomy, followed by injection of a small amount of tretinoin (TA) to label the posterior vitreous cortex and excision of the posterior vitreous cortex within the vascular arch. The ILM on the macular surface was stained with indocyanine green (ICG, 2.5 mg/ml), and the peripapillary ILM was peeled off with forceps, leaving a semicircular piece of ILM attached to the foramen ovale, and the individual ILM flaps were then turned over and covered with MH. Air-liquid exchange was then performed and subsequent surgery was routinely performed according to existing surgical concepts. Ultrasonic emulsification and IOL implantation were selectively performed depending on the extent of the cataract and the patient's surgical needs. Antibiotic ointment is applied at the end of the procedure. After surgery, patients were advised to remain in strict prone position for 3 days.
Locations (1)
Sichuan Provincial People's Hospital
Chengdu, Sichuan, China