| Photospallation: a new theory and mechanism for mid-infrared corneal ablations. | |
| | |
MedLine Citation:
|
PMID: 10693625 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: A new mechanism for ablating corneal tissue is proposed, based on photospallation with short pulse mid-infrared (IR) laser radiation. METHODS: By using a judicious combination of high absorption, short pulses, and low fluences, ablation with this process can potentially remove tissue in a highly localized manner with submicron collateral thermal damage characteristics similar to those achieved by excimer lasers. We provide a brief qualitative overview of aspects of the spallation process that distinguish it from the more familiar photoablation and photothermal mechanisms. RESULTS: Results of preliminary parametric analysis based on one-dimensional models of thermoelastic expansion are summarized. CONCLUSION: These preliminary calculations lend support to the conjecture that corneal tissue can be removed effectively with strongly absorbed nanosecond pulses from a mid-IR laser, using operational fluence levels of less than 200 mJ/cm2. |
| | |
Authors:
|
H J Hoffman; W B Telfair |
Related Documents
:
|
19783955 - Dendrimer-capped nanoparticles prepared by picosecond laser ablation in liquid environm... 23187255 - Analysis of the feed-forward method for the referencing of a cw laser to a frequency comb. 23012535 - Laser scanning on road pavements: a new approach for characterizing surface texture. 23669775 - Gain-switched yb-doped fiber laser for microprocessing. 20548345 - Optimization of the splice loss between photonic-bandgap fibers and conventional single... 17711275 - Characterization of a genuine iron(v)-nitrido species by nuclear resonant vibrational s... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of refractive surgery (Thorofare, N.J. : 1995) Volume: 16 ISSN: 1081-597X ISO Abbreviation: J Refract Surg Publication Date: 2000 Jan-Feb |
Date Detail:
|
Created Date: 2000-03-17 Completed Date: 2000-03-17 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 9505927 Medline TA: J Refract Surg Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 90-4 Citation Subset: IM |
Affiliation:
|
IRVision, Inc., San Jose, CA 95131, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Cornea
/
surgery* Humans Infrared Rays Laser Therapy / instrumentation, methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evaluation of corneal flap dimensions and cut quality using the Automated Corneal Shaper microkerato...
Next Document: Central nervous system complications in liver transplant recipients--incidence, timing, and long-ter...