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Proceedings Paper

Scleral indentation height after laser scleral buckling
Author(s): Se Woong Kang; Jean-Marie A. Parel; Fabrice Manns; Jawheung Lee; William E. Smiddy
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Paper Abstract

Laser scleral buckling (LSB) and scleral buckling are methods of inducing scleral indentation, a necessary objective in standard retinal reattachment surgery. The purpose of this study was to compare the height of scleral indentation produced by both modalities. Twenty (4 columns, 5 rows) overlapping spots of pulsed Holmium:YAG or Thulium:YAG laser were applied at the equatorial sclera in 20 human cadaver eyes (LSB group). The diameter of each laser spot was set to 2.5 mm using a custom-made laser probe. Total energy of Holmium:YAG and Thulium:YAG applied to each laser spot were 1285 mJ and 815 mJ, respectively. Scleral shrinkage and change in scleral thickness were measured. A radially oriented 5 mm silicone band was placed at the equator in 10 human cadaver eyes (explant group). The intraocular pressure (IOP) was adjusted to 4 mm Hg preoperatively, and to 16 mm Hg postoperatively in all eyes and monitored during the procedure. Scleral indentation height, assessed in frozen sections made along the eyeball equator, produced by Holmium:YAG (1.07 mm) and Thulium:YAG (1.30 mm) was less than that of explant group (3.12 mm) (p less than 0.05). Each application of a laser spot elevated the IOP by 4.9 mm Hg and the IOP decreased into a quarter of its elevation after 3.64 seconds. LSB with Thulium:YAG laser is potentially useful in retinal detachments when combined with vitrectomy for creating a shallow and broad buckling effect (i.e. in proliferative vitreoretinopathy cases).

Paper Details

Date Published: 1 June 1998
PDF: 6 pages
Proc. SPIE 3246, Ophthalmic Technologies VIII, (1 June 1998); doi: 10.1117/12.309426
Show Author Affiliations
Se Woong Kang, Bascom Palmer Eye Institute/Univ. of Miami School of Medicine and College of Medicine/Chun (South Korea)
Jean-Marie A. Parel, Univ. of Miami and Bascom Palmer Eye Institute/Univ. of Miami School of Medicine and Univ. (United States)
Fabrice Manns, Univ. of Miami and Bascom Palmer Eye Institute/Univ. of Miami School of Medicine (United States)
Jawheung Lee, College of Medicine/Seoul National Univ. (South Korea)
William E. Smiddy, Bascom Palmer Eye Institute/Univ. of Miami School of Medicine (United States)


Published in SPIE Proceedings Vol. 3246:
Ophthalmic Technologies VIII
Pascal O. Rol; Karen Margaret Joos; Fabrice Manns, Editor(s)

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