Experimentally designed glaucoma implant surgery with mitomycin C in rabbit.
- Author:
Changwon KEE
1
;
Dong Ho YOUN
Author Information
- Publication Type:Original Article
- Keywords: glaucoma implant; aqueous reservoir; ocular motility disorder; mitomycin C; infraocular pressure
- MeSH: Animals; Anterior Eye Segment/ultrasonography; Antibiotics, Antineoplastic/*therapeutic use; Aqueous Humor/secretion; Chemotherapy, Adjuvant; Glaucoma/*therapy; Intraocular Pressure; Mitomycin/*therapeutic use; Ocular Hypotension/prevention & control; Ocular Motility Disorders/prevention & control; *Prostheses and Implants; Rabbits; *Silicone Elastomers; Tonometry, Ocular
- From:Korean Journal of Ophthalmology 1995;9(2):89-95
- CountryRepublic of Korea
- Language:English
- Abstract: An attempt was made to observe the possibility of controlling intraocular pressure (IOP) without hypotony and ocular motility disorder by installing an experimentally designed glaucoma implant through a small conjunctival incision with the aid of a stylet and maintaining the aqueous reservoir using mitomycin C (MMC). The implant was made of silicone tube, of which one end was occluded by glue and on the same end 4 check-valve-like slits were made. Thirty-five healthy white rabbits were used and subdivided into 4 groups. In groups I to III, implants having 2.0, 2.5, 3.0 mm slit lengths, respectively, were installed with MMC application in one eye of each of the 10 rabbits. In group IV, a 2 mm slit-length implant was installed without MMC in one eye of each of the 5 rabbits. Pneumatonometry and ultrasonography were performed to check the IOP and the formation of aqueous reservoir in the implanted eyes for 8 weeks. In group I through III, there was a statistically significant 4-5 mmHg pressure-lowering effect in the implanted eyes compared to the contralateral control eyes for 8 weeks. The aqueous reservoirs were observed throughout the follow-up period. In group IV, we could observe neither a pressure-lowering effect nor aqueous reservoir formation in the implanted eyes after 2 weeks postoperatively. Hypotony did not occur in implanted eyes in any of the groups. This study shows the possibility of IOP control by installing a specially designed glaucoma implant with application of MMC.
