In vitro examination of the anterior chamber angle with a gradient-index (GRIN) lens endoscope

Karen M M D Joos, Jinhui Shen, Jean-Marie A Parel, Pascal O. Rol

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The cloudy cornea in primary infantile glaucoma may contraindicate a goniotomy if a view of the anterior chamber angle is not obtainable through the operating microscope. The purpose of this study was to determine if a gradient-index (GRIN) endoscope was capable of improving the imaging of the anterior chamber angle structures in vitro. The anterior chambers of cadaver porcine eyes were deepened with a viscoelastic material. The GRIN lens endoscope entered the anterior chamber through a corneal incision near the limbus. The anterior chamber structures including the pectinate ligaments in the angle were clearly visualized on a video screen as the endoscope was advanced into the anterior chamber angle. The amount of illumination was automatically controlled. A low OH silica fiber having a core diameter of 100 microns and delivering 10 mJ of Holmium:YAG energy was inserted into the endoscope. Due to the low amount of energy, the pectinate ligaments were inconsistently cut. The specimens were examined with a dissecting microscope, fixed in formalin, and processed for light microscopy. A thin endoscope allows intraoperative examination of anterior segment structures when a cloudy cornea is present. Therefore, it may become a useful instrument for performing a goniotomy in primary infantile glaucoma when direct visualization of the anterior chamber angle is not possible with a goniotomy lens.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsRosario Brancato, Adolf F. Fercher, A.S. Melamed, Pascal O. Rol
Pages42-46
Number of pages5
Volume2330
StatePublished - Dec 1 1995
EventLasers in Ophthalmology II - Lille, Fr
Duration: Sep 9 1994Sep 10 1994

Other

OtherLasers in Ophthalmology II
CityLille, Fr
Period9/9/949/10/94

Fingerprint

endoscopes
Endoscopy
Lenses
examination
chambers
lenses
gradients
Ligaments
glaucoma
ligaments
cornea
Microscopes
Holmium
microscopes
Formaldehyde
Optical microscopy
holmium
Visualization
Lighting
Silica

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Joos, K. M. M. D., Shen, J., Parel, J-M. A., & Rol, P. O. (1995). In vitro examination of the anterior chamber angle with a gradient-index (GRIN) lens endoscope. In R. Brancato, A. F. Fercher, A. S. Melamed, & P. O. Rol (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2330, pp. 42-46)

In vitro examination of the anterior chamber angle with a gradient-index (GRIN) lens endoscope. / Joos, Karen M M D; Shen, Jinhui; Parel, Jean-Marie A; Rol, Pascal O.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Rosario Brancato; Adolf F. Fercher; A.S. Melamed; Pascal O. Rol. Vol. 2330 1995. p. 42-46.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Joos, KMMD, Shen, J, Parel, J-MA & Rol, PO 1995, In vitro examination of the anterior chamber angle with a gradient-index (GRIN) lens endoscope. in R Brancato, AF Fercher, AS Melamed & PO Rol (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 2330, pp. 42-46, Lasers in Ophthalmology II, Lille, Fr, 9/9/94.
Joos KMMD, Shen J, Parel J-MA, Rol PO. In vitro examination of the anterior chamber angle with a gradient-index (GRIN) lens endoscope. In Brancato R, Fercher AF, Melamed AS, Rol PO, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2330. 1995. p. 42-46
Joos, Karen M M D ; Shen, Jinhui ; Parel, Jean-Marie A ; Rol, Pascal O. / In vitro examination of the anterior chamber angle with a gradient-index (GRIN) lens endoscope. Proceedings of SPIE - The International Society for Optical Engineering. editor / Rosario Brancato ; Adolf F. Fercher ; A.S. Melamed ; Pascal O. Rol. Vol. 2330 1995. pp. 42-46
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