Ologen Collagen Matrix Safety and Effective Comparison With Mitomycin-C(MMC) in Glaucoma Surgery

To compare the safety and effectiveness of oculusgen (ologen) collagen matrix implantation and Mitomycin-C(MMC) in glaucoma surgery.

To compare the safety and effectiveness in between oculusgen (ologen) collagen matrix implantation and Mitomycin-C(MMC) for glaucoma surgery. The surgery is performed by the gold standard of trabeculectomy. Mitomycin-C(MMC) is applied for those who not collagen matrix implanted.

Following ethics committee approval, 20 patients with uncontrolled glaucoma will be will be recruited according to the enrollment acceptance criteria. Randomisation is performed and patients are allocated for trabeculectomy with Mitomycin-C.

20 patients will be recruited according to the enrollment acceptance criteria. Randomisation is performed and patients are allocated for trabeculectomy with ologen implant. The collagen matrix will be placed on top of the scleral flap under the conjunctiva after the trabeculectomy.

If mitomycin -C is applied, a single cellulose sponge soaked with Mitomycin-C(MMC) (0.2mg/ml - 0.4mg/ml) is fashioned into an approximate 2.0 × 4.0 mm rectangular shape and applied to the scleral bed and subconjunctival space taking care to avoid exposure to the conjunctival wound edge. Application time is 2 minutes for MMC. Then, the area treated is copiously irrigated with balanced salt solution. After operation, appropriate anti-inflammatory and antibiotic eye-drops will be prescribed.

Postoperative intraocular pressure change at 360 days compared to baseline (preoperative) intraocular pressure measured in mmHg. Calculated as postoperative intraocular pressure minus baseline (preoperative) intraocular pressure.

Postoperative intraocular pressure change at 180 days compared to baseline (preoperative) intraocular pressure measured in mmHg. Calculated as postoperative intraocular pressure minus baseline (preoperative) intraocular pressure.

Postoperative intraocular pressure change at 90 days compared to baseline (preoperative) intraocular pressure measured in mmHg. Calculated as postoperative intraocular pressure minus baseline (preoperative) intraocular pressure.

Postoperative intraocular pressure change at 30 days compared to baseline (preoperative) intraocular pressure measured in mmHg. Calculated as postoperative intraocular pressure minus baseline (preoperative) intraocular pressure.

Incidence (percentage) for complications recorded: Hyphema, early hypotony(<7days), late hypotony(>7days), shallow anterior chamber, choroidal detachment, early leak(<7days), late leak(>7days), Tenon's cysts, and revision surgery for up to 360 days.

Inclusion Criteria: Open angle glaucoma Maxima anti-glaucoma medication failed Age>18 Able to complete the follow up Exclusion Criteria: Topical eye inflammation Angle closure glaucoma Deformity glaucoma One eye glaucoma Previous conjunctiva opened Allergy to collagen