Twofold technique for iridodialysis repair

Background: Disinsertion of iris leads to debilitating sequelae like diplopia and glare. Hence, iridodialysis repair is essential to optimize the visual quality. Iris base repair often leads to corectopia that necessitates an additional procedure to optimize the pupil shape and size. Twofold technique helps to achieve both the aspects. Purpose: To highlight the technique of twofold iridodialysis repair. Synopsis: The video highlights the method of twofold iridodialysis repair, wherein nonappositional repair is followed by single?pass four?throw (SFT) pupilloplasty thatallows adequate closure of varied degrees of iridodialysis along with centration of eccentric pupil. Highlights: The twofold technique is a combination of nonappositional iris repair and SFT procedure. It can be clinically applied in all cases of iridodialysis with varied degrees of severity

Fibrous capsule surrounding silicone encircling band and Gore-Tex(TM) surgical membrane

Since the anterior chamber tube shunt to an encircling band(ACTSEB) is not a simple procedure, an extended polytetrafluoroethylene (e-PTFE)-silicone tube (anterior chamber tube shunt to a surgical membrane; ACTSSM) was attempted as a new glaucoma drainage implant. To see whether the newly-modified, two-fold e-PTFE-silicone tube implant could prevent early hypotony and to compare the tissue response to each implant, ACTSEB and ACTSSM procedures were done in normal colored rabbit eyes. It was found the ACTSSM kept the depth of the postoperative anterior chamber normal. And in general, foreign body responses were light microscopically similar. The fibrous capsule lining the e-PTFE was composed of thicker, less dense fibroblasts, as well as less collagen than that lining the silicone encircling band. These findings seemed to be related to the difference in the pressure-lowering capacity between ACTSEB and ACTSSM.

Anterior Chamber Tube Shunt to a Surgical Membrane

Ahn et al.(1989) reported that glaucoma tube shunt surgery using 0.1 mm thickness expanded polytetrafluoroethylene(e-PTFE) as a template controlled the intraocular pressure successfully. But it requires the placement of intraluminal suture in the silicone tube to prevent early postoperative hypotony. To overcome this disadvantage, we modified the template by putting the posterior end of the silicone tube between the two-fold e-PTFE membrane and implanted it in 5 refractory glaucoma patients. The intraocular pressure was controlled without complications such as early hypotony, flat anterior chamber, and choroidal detachment.