Korean J Ophthalmol.  1995 Dec;9(2):89-95. 10.3341/kjo.1995.9.2.89.

Experimentally designed glaucoma implant surgery with mitomycin C in rabbit

• Kee C
• Youn DH

• KMID: 1735143
• DOI: http://doi.org/10.3341/kjo.1995.9.2.89

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.

Keyword

glaucoma implant; aqueous reservoir; ocular motility disorder; mitomycin C; infraocular pressure

MeSH Terms

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
Antibiotics, Antineoplastic
Mitomycin
Silicone Elastomers