200 Hz flying-spot technology of the LaserSight LSX excimer laser in the treatment of myopic astigmatism: six and 12 month outcomes of laser in situ keratomileusis and photorefractive keratectomy
Purpose: To evaluate safety, efficacy, predictability, and stability in the treatment of myopic astigmatism with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) using the 200 Hz flying-spot technology of the LaserSight LSX excimer laser. Setting: SynsLaser Clinic, Tromsø,...
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| Veröffentlicht in: | Journal of cataract and refractive surgery 2001-08, Vol.27 (8), p.1263-1277 |
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| container_title | Journal of cataract and refractive surgery |
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| creator | Stojanovic, Aleksandar Nitter, Tore A |
| description | Purpose:
To evaluate safety, efficacy, predictability, and stability in the treatment of myopic astigmatism with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) using the 200 Hz flying-spot technology of the LaserSight LSX excimer laser.
Setting:
SynsLaser Clinic, Tromsø, Norway.
Methods:
This retrospective study included 110 eyes treated with LASIK and 87 eyes treated with PRK that were available for evaluation at 6 and 12 months, respectively. The mean preoperative spherical equivalent (SE) was −5.35 diopters (D) ± 2.50 (SD) (range −1.13 to −11.88 D) in the LASIK eyes and −4.72 ± 2.82 D (range −1.00 to −15.50 D) in the PRK eyes. The treated cylinder was 4.00 D in both groups. Eleven (8.5%) LASIK eyes and 8 (7.4%) PRK eyes had secondary surgical procedures before 6 and 12 months, respectively, and were excluded when the 6 and 12 month outcomes were analyzed.
Results:
None of the eyes lost 2 or more lines of best spectacle-corrected visual acuity. Seventy-seven percent of the LASIK eyes and 78% of the PRK eyes achieved an uncorrected visual acuity of 20/20 or better; 98% in both groups achieved 20/40 or better. The SE was within ±0.5 D of the desired refraction in 83% of the LASIK eyes and 77% of the PRK eyes; it was within ±1.0 D in 97% and 98%, respectively. The cylinder correction had a mean magnitude of error of 0.04 ± 0.31 D (range −0.96 to +0.85 D) in the LASIK eyes and 0.02 ± 0.37 D (range −1.44 to +0.72 D) in the PRK eyes. Refractive stability was achieved at 1 month and beyond in the LASIK eyes and at 3 months and beyond in the PRK eyes.
Conclusion:
The outcomes of this study are comparable to those achieved with lasers that use small-beam technology with a lower frequency, as well as with other types of delivery systems. They suggest that the 200 Hz technology used in the LaserSight LSX excimer laser is safe, effective, and predictable and that with LASIK and PRK the results are stable when treating low to moderate myopia and astigmatism up to 4.0 D. |
| doi_str_mv | 10.1016/S0886-3350(01)00996-8 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_71154906</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0886335001009968</els_id><sourcerecordid>71154906</sourcerecordid><originalsourceid>FETCH-LOGICAL-c485t-9926e82f48b88ada548d70ae65149ab59adae8d7c0d42b0c7e8557a5e041b6be3</originalsourceid><addsrcrecordid>eNqFkUGL1TAUhYMozpvRn6BkITIuqkmbtKkbkUEd4YGLp-AupOnta7RpOkk6TP17_jHT9x6jOze5cPjOzeUchJ5R8poSWr7ZESHKrCg4uST0FSF1XWbiAdpQURUZ4yR_iDb3yBk6D-EHIYTlBX-MzijlOcsJ2aDf6cXXv3A3LGbcZ2FyEUfQ_egGt1-w63DsAW9VAL8z-z7i7e47hjttLHg8rDI244GJHlS0MMbVZBc3GY1ViGZvVTTBvsXB3GE1tpjm2Lox9tjNUTsLYTXcrwomzvgneBWdNQPMwYSDa-pddB46r3Q0t3BEQCdqeYIedWoI8PQ0L9C3jx--Xl1n2y-fPl-932aaCR6zus5LEHnHRCOEahVnoq2IgpJTVquG10mDJGnSsrwhugLBeaU4EEabsoHiAr087p28u5khRGlN0DAMagQ3B1mlWFlNygTyI6i9CyEdLSdvrPKLpESu7clDe3KtRhIqD-1JkXzPTx_MjYX2r-tUVwJenAAVtBpSGKM24R-OlkWxYu-OGKQ0bg14GbSBUUNrfIpMts7855I_DdO6lg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>71154906</pqid></control><display><type>article</type><title>200 Hz flying-spot technology of the LaserSight LSX excimer laser in the treatment of myopic astigmatism: six and 12 month outcomes of laser in situ keratomileusis and photorefractive keratectomy</title><source>MEDLINE</source><source>Access via ScienceDirect (Elsevier)</source><creator>Stojanovic, Aleksandar ; Nitter, Tore A</creator><creatorcontrib>Stojanovic, Aleksandar ; Nitter, Tore A</creatorcontrib><description>Purpose:
To evaluate safety, efficacy, predictability, and stability in the treatment of myopic astigmatism with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) using the 200 Hz flying-spot technology of the LaserSight LSX excimer laser.
Setting:
SynsLaser Clinic, Tromsø, Norway.
Methods:
This retrospective study included 110 eyes treated with LASIK and 87 eyes treated with PRK that were available for evaluation at 6 and 12 months, respectively. The mean preoperative spherical equivalent (SE) was −5.35 diopters (D) ± 2.50 (SD) (range −1.13 to −11.88 D) in the LASIK eyes and −4.72 ± 2.82 D (range −1.00 to −15.50 D) in the PRK eyes. The treated cylinder was 4.00 D in both groups. Eleven (8.5%) LASIK eyes and 8 (7.4%) PRK eyes had secondary surgical procedures before 6 and 12 months, respectively, and were excluded when the 6 and 12 month outcomes were analyzed.
Results:
None of the eyes lost 2 or more lines of best spectacle-corrected visual acuity. Seventy-seven percent of the LASIK eyes and 78% of the PRK eyes achieved an uncorrected visual acuity of 20/20 or better; 98% in both groups achieved 20/40 or better. The SE was within ±0.5 D of the desired refraction in 83% of the LASIK eyes and 77% of the PRK eyes; it was within ±1.0 D in 97% and 98%, respectively. The cylinder correction had a mean magnitude of error of 0.04 ± 0.31 D (range −0.96 to +0.85 D) in the LASIK eyes and 0.02 ± 0.37 D (range −1.44 to +0.72 D) in the PRK eyes. Refractive stability was achieved at 1 month and beyond in the LASIK eyes and at 3 months and beyond in the PRK eyes.
Conclusion:
The outcomes of this study are comparable to those achieved with lasers that use small-beam technology with a lower frequency, as well as with other types of delivery systems. They suggest that the 200 Hz technology used in the LaserSight LSX excimer laser is safe, effective, and predictable and that with LASIK and PRK the results are stable when treating low to moderate myopia and astigmatism up to 4.0 D.</description><identifier>ISSN: 0886-3350</identifier><identifier>EISSN: 1873-4502</identifier><identifier>DOI: 10.1016/S0886-3350(01)00996-8</identifier><identifier>PMID: 11524200</identifier><identifier>CODEN: JCSUEV</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Adult ; Astigmatism - surgery ; Biological and medical sciences ; Cornea - surgery ; Female ; Humans ; Keratomileusis, Laser In Situ - methods ; Lasers, Excimer ; Male ; Medical sciences ; Middle Aged ; Myopia - surgery ; Photorefractive Keratectomy - methods ; Refraction, Ocular ; Retrospective Studies ; Safety ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Surgery of the eye and orbit ; Treatment Outcome ; Visual Acuity</subject><ispartof>Journal of cataract and refractive surgery, 2001-08, Vol.27 (8), p.1263-1277</ispartof><rights>2001 Elsevier Science Inc.</rights><rights>2001 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c485t-9926e82f48b88ada548d70ae65149ab59adae8d7c0d42b0c7e8557a5e041b6be3</citedby><cites>FETCH-LOGICAL-c485t-9926e82f48b88ada548d70ae65149ab59adae8d7c0d42b0c7e8557a5e041b6be3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0886-3350(01)00996-8$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1116330$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11524200$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Stojanovic, Aleksandar</creatorcontrib><creatorcontrib>Nitter, Tore A</creatorcontrib><title>200 Hz flying-spot technology of the LaserSight LSX excimer laser in the treatment of myopic astigmatism: six and 12 month outcomes of laser in situ keratomileusis and photorefractive keratectomy</title><title>Journal of cataract and refractive surgery</title><addtitle>J Cataract Refract Surg</addtitle><description>Purpose:
To evaluate safety, efficacy, predictability, and stability in the treatment of myopic astigmatism with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) using the 200 Hz flying-spot technology of the LaserSight LSX excimer laser.
Setting:
SynsLaser Clinic, Tromsø, Norway.
Methods:
This retrospective study included 110 eyes treated with LASIK and 87 eyes treated with PRK that were available for evaluation at 6 and 12 months, respectively. The mean preoperative spherical equivalent (SE) was −5.35 diopters (D) ± 2.50 (SD) (range −1.13 to −11.88 D) in the LASIK eyes and −4.72 ± 2.82 D (range −1.00 to −15.50 D) in the PRK eyes. The treated cylinder was 4.00 D in both groups. Eleven (8.5%) LASIK eyes and 8 (7.4%) PRK eyes had secondary surgical procedures before 6 and 12 months, respectively, and were excluded when the 6 and 12 month outcomes were analyzed.
Results:
None of the eyes lost 2 or more lines of best spectacle-corrected visual acuity. Seventy-seven percent of the LASIK eyes and 78% of the PRK eyes achieved an uncorrected visual acuity of 20/20 or better; 98% in both groups achieved 20/40 or better. The SE was within ±0.5 D of the desired refraction in 83% of the LASIK eyes and 77% of the PRK eyes; it was within ±1.0 D in 97% and 98%, respectively. The cylinder correction had a mean magnitude of error of 0.04 ± 0.31 D (range −0.96 to +0.85 D) in the LASIK eyes and 0.02 ± 0.37 D (range −1.44 to +0.72 D) in the PRK eyes. Refractive stability was achieved at 1 month and beyond in the LASIK eyes and at 3 months and beyond in the PRK eyes.
Conclusion:
The outcomes of this study are comparable to those achieved with lasers that use small-beam technology with a lower frequency, as well as with other types of delivery systems. They suggest that the 200 Hz technology used in the LaserSight LSX excimer laser is safe, effective, and predictable and that with LASIK and PRK the results are stable when treating low to moderate myopia and astigmatism up to 4.0 D.</description><subject>Adult</subject><subject>Astigmatism - surgery</subject><subject>Biological and medical sciences</subject><subject>Cornea - surgery</subject><subject>Female</subject><subject>Humans</subject><subject>Keratomileusis, Laser In Situ - methods</subject><subject>Lasers, Excimer</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Myopia - surgery</subject><subject>Photorefractive Keratectomy - methods</subject><subject>Refraction, Ocular</subject><subject>Retrospective Studies</subject><subject>Safety</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Surgery of the eye and orbit</subject><subject>Treatment Outcome</subject><subject>Visual Acuity</subject><issn>0886-3350</issn><issn>1873-4502</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkUGL1TAUhYMozpvRn6BkITIuqkmbtKkbkUEd4YGLp-AupOnta7RpOkk6TP17_jHT9x6jOze5cPjOzeUchJ5R8poSWr7ZESHKrCg4uST0FSF1XWbiAdpQURUZ4yR_iDb3yBk6D-EHIYTlBX-MzijlOcsJ2aDf6cXXv3A3LGbcZ2FyEUfQ_egGt1-w63DsAW9VAL8z-z7i7e47hjttLHg8rDI244GJHlS0MMbVZBc3GY1ViGZvVTTBvsXB3GE1tpjm2Lox9tjNUTsLYTXcrwomzvgneBWdNQPMwYSDa-pddB46r3Q0t3BEQCdqeYIedWoI8PQ0L9C3jx--Xl1n2y-fPl-932aaCR6zus5LEHnHRCOEahVnoq2IgpJTVquG10mDJGnSsrwhugLBeaU4EEabsoHiAr087p28u5khRGlN0DAMagQ3B1mlWFlNygTyI6i9CyEdLSdvrPKLpESu7clDe3KtRhIqD-1JkXzPTx_MjYX2r-tUVwJenAAVtBpSGKM24R-OlkWxYu-OGKQ0bg14GbSBUUNrfIpMts7855I_DdO6lg</recordid><startdate>20010801</startdate><enddate>20010801</enddate><creator>Stojanovic, Aleksandar</creator><creator>Nitter, Tore A</creator><general>Elsevier Inc</general><general>Elsevier Science</general><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>20010801</creationdate><title>200 Hz flying-spot technology of the LaserSight LSX excimer laser in the treatment of myopic astigmatism: six and 12 month outcomes of laser in situ keratomileusis and photorefractive keratectomy</title><author>Stojanovic, Aleksandar ; Nitter, Tore A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c485t-9926e82f48b88ada548d70ae65149ab59adae8d7c0d42b0c7e8557a5e041b6be3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Adult</topic><topic>Astigmatism - surgery</topic><topic>Biological and medical sciences</topic><topic>Cornea - surgery</topic><topic>Female</topic><topic>Humans</topic><topic>Keratomileusis, Laser In Situ - methods</topic><topic>Lasers, Excimer</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Myopia - surgery</topic><topic>Photorefractive Keratectomy - methods</topic><topic>Refraction, Ocular</topic><topic>Retrospective Studies</topic><topic>Safety</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Surgery of the eye and orbit</topic><topic>Treatment Outcome</topic><topic>Visual Acuity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Stojanovic, Aleksandar</creatorcontrib><creatorcontrib>Nitter, Tore A</creatorcontrib><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>Journal of cataract and refractive surgery</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Stojanovic, Aleksandar</au><au>Nitter, Tore A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>200 Hz flying-spot technology of the LaserSight LSX excimer laser in the treatment of myopic astigmatism: six and 12 month outcomes of laser in situ keratomileusis and photorefractive keratectomy</atitle><jtitle>Journal of cataract and refractive surgery</jtitle><addtitle>J Cataract Refract Surg</addtitle><date>2001-08-01</date><risdate>2001</risdate><volume>27</volume><issue>8</issue><spage>1263</spage><epage>1277</epage><pages>1263-1277</pages><issn>0886-3350</issn><eissn>1873-4502</eissn><coden>JCSUEV</coden><abstract>Purpose:
To evaluate safety, efficacy, predictability, and stability in the treatment of myopic astigmatism with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) using the 200 Hz flying-spot technology of the LaserSight LSX excimer laser.
Setting:
SynsLaser Clinic, Tromsø, Norway.
Methods:
This retrospective study included 110 eyes treated with LASIK and 87 eyes treated with PRK that were available for evaluation at 6 and 12 months, respectively. The mean preoperative spherical equivalent (SE) was −5.35 diopters (D) ± 2.50 (SD) (range −1.13 to −11.88 D) in the LASIK eyes and −4.72 ± 2.82 D (range −1.00 to −15.50 D) in the PRK eyes. The treated cylinder was 4.00 D in both groups. Eleven (8.5%) LASIK eyes and 8 (7.4%) PRK eyes had secondary surgical procedures before 6 and 12 months, respectively, and were excluded when the 6 and 12 month outcomes were analyzed.
Results:
None of the eyes lost 2 or more lines of best spectacle-corrected visual acuity. Seventy-seven percent of the LASIK eyes and 78% of the PRK eyes achieved an uncorrected visual acuity of 20/20 or better; 98% in both groups achieved 20/40 or better. The SE was within ±0.5 D of the desired refraction in 83% of the LASIK eyes and 77% of the PRK eyes; it was within ±1.0 D in 97% and 98%, respectively. The cylinder correction had a mean magnitude of error of 0.04 ± 0.31 D (range −0.96 to +0.85 D) in the LASIK eyes and 0.02 ± 0.37 D (range −1.44 to +0.72 D) in the PRK eyes. Refractive stability was achieved at 1 month and beyond in the LASIK eyes and at 3 months and beyond in the PRK eyes.
Conclusion:
The outcomes of this study are comparable to those achieved with lasers that use small-beam technology with a lower frequency, as well as with other types of delivery systems. They suggest that the 200 Hz technology used in the LaserSight LSX excimer laser is safe, effective, and predictable and that with LASIK and PRK the results are stable when treating low to moderate myopia and astigmatism up to 4.0 D.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>11524200</pmid><doi>10.1016/S0886-3350(01)00996-8</doi><tpages>15</tpages></addata></record> |
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| identifier | ISSN: 0886-3350 |
| ispartof | Journal of cataract and refractive surgery, 2001-08, Vol.27 (8), p.1263-1277 |
| issn | 0886-3350 1873-4502 |
| language | eng |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Adult Astigmatism - surgery Biological and medical sciences Cornea - surgery Female Humans Keratomileusis, Laser In Situ - methods Lasers, Excimer Male Medical sciences Middle Aged Myopia - surgery Photorefractive Keratectomy - methods Refraction, Ocular Retrospective Studies Safety Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Surgery of the eye and orbit Treatment Outcome Visual Acuity |
| title | 200 Hz flying-spot technology of the LaserSight LSX excimer laser in the treatment of myopic astigmatism: six and 12 month outcomes of laser in situ keratomileusis and photorefractive keratectomy |
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