Plasma-mediated ablation of corneal tissue at 1053 nm using a Nd:YLF oscillator/regenerative amplifier laser
Plasma‐mediated ablations were performed on human donor corneas with a short pulsed Nd:YLF laser system at 1053 nm. The pulses were 60 psec in duration at a repetition rate of 1.0 kHz. The laser beam was oriented perpendicular to the cornea surface. The threshold energy densities for ablation of epi...
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| Veröffentlicht in: | Lasers in surgery and medicine 1991, Vol.11 (5), p.426-431 |
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| container_title | Lasers in surgery and medicine |
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| creator | Niemz, Mark H. Klancnik, Edward G. Bille, Josef F. |
| description | Plasma‐mediated ablations were performed on human donor corneas with a short pulsed Nd:YLF laser system at 1053 nm. The pulses were 60 psec in duration at a repetition rate of 1.0 kHz. The laser beam was oriented perpendicular to the cornea surface. The threshold energy densities for ablation of epithelium, Bowman's membrane and stroma were measured. They were 6.1±1.8 J/cm2, 21.0±5.1 J/cm2 and 10.4±1.8 J/cm2, respectively. The mean rate of tissue removal at the stromal energy density threshold was about 1 μm per pulse. The walls of the laser excisions were smooth with distortions of less than 1 μm. A new quantitative model of plasma‐mediated ablation is introduced and found to closely predict the observed results. Based on the promising nature of the experimental data further investigations are planned in the use of a mode locked Nd:YLF laser as an alternative to excimer lasers for refractive corneal surgery. |
| doi_str_mv | 10.1002/lsm.1900110507 |
| format | Article |
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The pulses were 60 psec in duration at a repetition rate of 1.0 kHz. The laser beam was oriented perpendicular to the cornea surface. The threshold energy densities for ablation of epithelium, Bowman's membrane and stroma were measured. They were 6.1±1.8 J/cm2, 21.0±5.1 J/cm2 and 10.4±1.8 J/cm2, respectively. The mean rate of tissue removal at the stromal energy density threshold was about 1 μm per pulse. The walls of the laser excisions were smooth with distortions of less than 1 μm. A new quantitative model of plasma‐mediated ablation is introduced and found to closely predict the observed results. 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Graft diseases ; Surgery of the eye and orbit ; Yttrium</subject><ispartof>Lasers in surgery and medicine, 1991, Vol.11 (5), p.426-431</ispartof><rights>Copyright © 1991 Wiley‐Liss, Inc., A Wiley Company</rights><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4077-ea4838791e529406615a90b89990dfa853a2f140757d1ff648e275a8fa65556f3</citedby><cites>FETCH-LOGICAL-c4077-ea4838791e529406615a90b89990dfa853a2f140757d1ff648e275a8fa65556f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Flsm.1900110507$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Flsm.1900110507$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1416,4022,27921,27922,27923,45572,45573</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5045176$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1816477$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Niemz, Mark H.</creatorcontrib><creatorcontrib>Klancnik, Edward G.</creatorcontrib><creatorcontrib>Bille, Josef F.</creatorcontrib><title>Plasma-mediated ablation of corneal tissue at 1053 nm using a Nd:YLF oscillator/regenerative amplifier laser</title><title>Lasers in surgery and medicine</title><addtitle>Lasers Surg. Med</addtitle><description>Plasma‐mediated ablations were performed on human donor corneas with a short pulsed Nd:YLF laser system at 1053 nm. The pulses were 60 psec in duration at a repetition rate of 1.0 kHz. The laser beam was oriented perpendicular to the cornea surface. The threshold energy densities for ablation of epithelium, Bowman's membrane and stroma were measured. They were 6.1±1.8 J/cm2, 21.0±5.1 J/cm2 and 10.4±1.8 J/cm2, respectively. The mean rate of tissue removal at the stromal energy density threshold was about 1 μm per pulse. The walls of the laser excisions were smooth with distortions of less than 1 μm. A new quantitative model of plasma‐mediated ablation is introduced and found to closely predict the observed results. Based on the promising nature of the experimental data further investigations are planned in the use of a mode locked Nd:YLF laser as an alternative to excimer lasers for refractive corneal surgery.</description><subject>Biological and medical sciences</subject><subject>Cornea - surgery</subject><subject>Corneal Stroma - surgery</subject><subject>corneal surgery</subject><subject>Energy Transfer</subject><subject>Equipment Design</subject><subject>Humans</subject><subject>Lasers</subject><subject>Light Coagulation - instrumentation</subject><subject>Light Coagulation - methods</subject><subject>Medical sciences</subject><subject>Nd:YLF laser</subject><subject>Neodymium</subject><subject>plasma-mediated ablation</subject><subject>Regression Analysis</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Surgery of the eye and orbit</subject><subject>Yttrium</subject><issn>0196-8092</issn><issn>1096-9101</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkEFv1DAQhS0EKkvhyg3JB8Qt23ES2zE3VGip2BYkCoiTNZuMK4OTLHYC9N_jKqtWnHqakeZ7740eY88FrAVAeRRSvxYGQAiQoB-wlQCjCiNAPGQrEHlvwJSP2ZOUfgBAVYI-YAeiEarWesXCp4Cpx6KnzuNEHcdtwMmPAx8db8c4EAY--ZRm4jjxHFLxoedz8sMVR37Rvf6-OeFjan3IujEeRbqigWL2-J0V_S545ynynELxKXvkMCR6tp-H7MvJu8vj98Xm4-nZ8ZtN0dagdUFYN1WjjSBZmhqUEhINbBtjDHQOG1lh6URGpe6Ec6puqNQSG4dKSqlcdcheLb67OP6aKU2296ml_OFA45ysLnXVmFJmcL2AbRxTiuTsLvoe47UVYG_qtblee1dvFrzYO8_bXNkdvvSZ7y_3d0wtBhdxaH26xSTUUmiVMbNgf3yg63tC7ebz-X8vFIvWp4n-3mox_rRKV1rabxenVpsPb83X-tKK6h94GKDc</recordid><startdate>1991</startdate><enddate>1991</enddate><creator>Niemz, Mark H.</creator><creator>Klancnik, Edward G.</creator><creator>Bille, Josef F.</creator><general>John Wiley & Sons, Inc</general><general>Wiley-Liss</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>1991</creationdate><title>Plasma-mediated ablation of corneal tissue at 1053 nm using a Nd:YLF oscillator/regenerative amplifier laser</title><author>Niemz, Mark H. ; Klancnik, Edward G. ; Bille, Josef F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4077-ea4838791e529406615a90b89990dfa853a2f140757d1ff648e275a8fa65556f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Biological and medical sciences</topic><topic>Cornea - surgery</topic><topic>Corneal Stroma - surgery</topic><topic>corneal surgery</topic><topic>Energy Transfer</topic><topic>Equipment Design</topic><topic>Humans</topic><topic>Lasers</topic><topic>Light Coagulation - instrumentation</topic><topic>Light Coagulation - methods</topic><topic>Medical sciences</topic><topic>Nd:YLF laser</topic><topic>Neodymium</topic><topic>plasma-mediated ablation</topic><topic>Regression Analysis</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Surgery of the eye and orbit</topic><topic>Yttrium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Niemz, Mark H.</creatorcontrib><creatorcontrib>Klancnik, Edward G.</creatorcontrib><creatorcontrib>Bille, Josef F.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Lasers in surgery and medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Niemz, Mark H.</au><au>Klancnik, Edward G.</au><au>Bille, Josef F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Plasma-mediated ablation of corneal tissue at 1053 nm using a Nd:YLF oscillator/regenerative amplifier laser</atitle><jtitle>Lasers in surgery and medicine</jtitle><addtitle>Lasers Surg. Med</addtitle><date>1991</date><risdate>1991</risdate><volume>11</volume><issue>5</issue><spage>426</spage><epage>431</epage><pages>426-431</pages><issn>0196-8092</issn><eissn>1096-9101</eissn><coden>LSMEDI</coden><abstract>Plasma‐mediated ablations were performed on human donor corneas with a short pulsed Nd:YLF laser system at 1053 nm. The pulses were 60 psec in duration at a repetition rate of 1.0 kHz. The laser beam was oriented perpendicular to the cornea surface. The threshold energy densities for ablation of epithelium, Bowman's membrane and stroma were measured. They were 6.1±1.8 J/cm2, 21.0±5.1 J/cm2 and 10.4±1.8 J/cm2, respectively. The mean rate of tissue removal at the stromal energy density threshold was about 1 μm per pulse. The walls of the laser excisions were smooth with distortions of less than 1 μm. A new quantitative model of plasma‐mediated ablation is introduced and found to closely predict the observed results. Based on the promising nature of the experimental data further investigations are planned in the use of a mode locked Nd:YLF laser as an alternative to excimer lasers for refractive corneal surgery.</abstract><cop>New York</cop><pub>John Wiley & Sons, Inc</pub><pmid>1816477</pmid><doi>10.1002/lsm.1900110507</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 0196-8092 |
| ispartof | Lasers in surgery and medicine, 1991, Vol.11 (5), p.426-431 |
| issn | 0196-8092 1096-9101 |
| language | eng |
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| source | MEDLINE; Wiley Online Library All Journals |
| subjects | Biological and medical sciences Cornea - surgery Corneal Stroma - surgery corneal surgery Energy Transfer Equipment Design Humans Lasers Light Coagulation - instrumentation Light Coagulation - methods Medical sciences Nd:YLF laser Neodymium plasma-mediated ablation Regression Analysis Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Surgery of the eye and orbit Yttrium |
| title | Plasma-mediated ablation of corneal tissue at 1053 nm using a Nd:YLF oscillator/regenerative amplifier laser |
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