Dale Devore - Academia.edu (original) (raw)
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Papers by Dale Devore
Investigative Ophthalmology & Visual Science, Mar 26, 2012
Investigative Ophthalmology & Visual Science, Mar 26, 2012
Journal of Refractive Surgery, 1995
Excimer laser photoablation effectively and precisely removes corneal tissue but may not smooth i... more Excimer laser photoablation effectively and precisely removes corneal tissue but may not smooth irregularities on the anterior corneal surface. An even surface might be obtained by applying a smoothing substance that fills in irregularities and ablates at the same rate as corneal tissue. Evaluation of collagen gel as a smoothing agent is reported. Pure, type I collagen solutions were prepared to remain soluble at physiological pH and to spontaneously gel when exposed to cationic buffers. Collagen gels were formed on the surface of enucleated porcine corneas and on human donor corneas and exposed to varying pulses of 193-nanometer excimer laser energy. Effects of collagen gel on ablation depth, corneal surface smoothness, and smoothing of roughened cornea were evaluated by examining scanning electron micrographs of control and treated specimens. Collagen gels formed from 5 mg/ml collagen solutions dramatically altered the depth of photoablation. Photoablation of roughened cornea with collagen gels produced smooth corneal surfaces, whereas control eyes remained roughened and irregular. The smoothness of photoablated cornea surfaces improved when collagen gels were applied prior to photoablation. The rapidly gelling collagen solution appears to exhibit the functional properties required for an effective smoothing agent for excimer laser photoablation. The substance has low viscosity when applied to the corneal surface and forms a rigid gel when exposed to cationic buffer solution. In addition, the concentration of the collagen gel can be adjusted to provide different ablation rates.
Investigative Ophthalmology & Visual Science, Apr 17, 2010
Investigative Ophthalmology & Visual Science, 2017
Investigative Ophthalmology & Visual Science, 2011
Investigative Ophthalmology & Visual Science, 2012
Investigative Ophthalmology & Visual Science, 2006
Investigative Ophthalmology & Visual Science, 2009
Journal of Refractive Surgery, 1995
BACKGROUND: Excimer laser photoablation effectively and precisely removes corneal tissue but may ... more BACKGROUND: Excimer laser photoablation effectively and precisely removes corneal tissue but may not smooth irregularities on the anterior corneal surface. An even surface might be obtained by applying a smoothing substance that fills in irregularities and ablates at the same rate as corneal tissue. Evaluation of collagen gel as a smoothing agent is reported. METHODS: Pure, type I collagen solutions were prepared to remain soluble at physiological pH and to spontaneously gel when exposed to cationic buffers. Collagen gels were formed on the surface of enucleated porcine corneas and on human donor corneas and exposed to varying pulses of 193nanometer excimer laser energy. Effects of collagen gel on ablation depth, corneal surface smoothness, and smoothing of roughened cornea were evaluated by examining scanning electron micrographs of control and treated specimens. RESULTS: Collagen gels formed from 5 mg/ml collagen solutions dramatically altered the depth of photoablation. Photoabla...
Investigative Ophthalmology & Visual Science, Mar 26, 2012
Investigative Ophthalmology & Visual Science, Mar 26, 2012
Journal of Refractive Surgery, 1995
Excimer laser photoablation effectively and precisely removes corneal tissue but may not smooth i... more Excimer laser photoablation effectively and precisely removes corneal tissue but may not smooth irregularities on the anterior corneal surface. An even surface might be obtained by applying a smoothing substance that fills in irregularities and ablates at the same rate as corneal tissue. Evaluation of collagen gel as a smoothing agent is reported. Pure, type I collagen solutions were prepared to remain soluble at physiological pH and to spontaneously gel when exposed to cationic buffers. Collagen gels were formed on the surface of enucleated porcine corneas and on human donor corneas and exposed to varying pulses of 193-nanometer excimer laser energy. Effects of collagen gel on ablation depth, corneal surface smoothness, and smoothing of roughened cornea were evaluated by examining scanning electron micrographs of control and treated specimens. Collagen gels formed from 5 mg/ml collagen solutions dramatically altered the depth of photoablation. Photoablation of roughened cornea with collagen gels produced smooth corneal surfaces, whereas control eyes remained roughened and irregular. The smoothness of photoablated cornea surfaces improved when collagen gels were applied prior to photoablation. The rapidly gelling collagen solution appears to exhibit the functional properties required for an effective smoothing agent for excimer laser photoablation. The substance has low viscosity when applied to the corneal surface and forms a rigid gel when exposed to cationic buffer solution. In addition, the concentration of the collagen gel can be adjusted to provide different ablation rates.
Investigative Ophthalmology & Visual Science, Apr 17, 2010
Investigative Ophthalmology & Visual Science, 2017
Investigative Ophthalmology & Visual Science, 2011
Investigative Ophthalmology & Visual Science, 2012
Investigative Ophthalmology & Visual Science, 2006
Investigative Ophthalmology & Visual Science, 2009
Journal of Refractive Surgery, 1995
BACKGROUND: Excimer laser photoablation effectively and precisely removes corneal tissue but may ... more BACKGROUND: Excimer laser photoablation effectively and precisely removes corneal tissue but may not smooth irregularities on the anterior corneal surface. An even surface might be obtained by applying a smoothing substance that fills in irregularities and ablates at the same rate as corneal tissue. Evaluation of collagen gel as a smoothing agent is reported. METHODS: Pure, type I collagen solutions were prepared to remain soluble at physiological pH and to spontaneously gel when exposed to cationic buffers. Collagen gels were formed on the surface of enucleated porcine corneas and on human donor corneas and exposed to varying pulses of 193nanometer excimer laser energy. Effects of collagen gel on ablation depth, corneal surface smoothness, and smoothing of roughened cornea were evaluated by examining scanning electron micrographs of control and treated specimens. RESULTS: Collagen gels formed from 5 mg/ml collagen solutions dramatically altered the depth of photoablation. Photoabla...