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Article: Effectiveness and Safety of Long Duration versus Short Duration Diode Laser Transscleral Cyclophotocoagulation

TitleEffectiveness and Safety of Long Duration versus Short Duration Diode Laser Transscleral Cyclophotocoagulation
Authors
Keywordscyclodiode
cycloablation
cyclodestruction
cyclodestructive
g-probe
Issue Date2020
PublisherDove Medical Press Ltd. The Journal's web site is located at http://www.dovepress.com/articles.php?journal_id=9
Citation
Clinical Ophthalmology, 2020, v. 2000 n. 14, p. 197-204 How to Cite?
AbstractPurpose: To compare the efficacy and safety of diode laser transscleral cyclophotocoagulation using either the long duration or short duration protocol. Methods: Retrospective series of 23 consecutive patients with glaucoma who underwent continuous-wave diode laser transscleral cyclophotocoagulation from August 2016 to July 2018 at a tertiary hospital in Hong Kong. Laser pulse duration for the long and short duration protocols was defined as 3.0-4.0 and 1.5-2.0 s, respectively. Results: There were 15 male and 8 female Chinese subjects (23 eyes), age 49-90 (71.3 +/- 2.7), with 10 subjects that underwent long duration cyclophotocoagulation (power 1239.2 +/- 78.3 mW, spots 13.9 +/- 1.4) and 13 subjects that had short duration cyclophotocoagulation (mean power 1817.3 +/- 85.7 mW, spots 14.4 +/- 1.0). Six months after long and short duration cyclophotocoagulation, intraocular pressure decreased significantly from 29.9 +/- 7.8 to 21.1 +/- 6.5 (p < 0.01), and from 35.4 +/- 2.7 to 24.1 +/- 3.4 (p = 0.04), respectively, while glaucoma medications decreased significantly by 1.4 +/- 0.5 (p = 0.02) in the long duration group only. Reduction of medications after short duration cyclophotocoagulation was less and did not reach statistical significance (0.9 +/- 0.9, p = 0.15). There was no significant difference of visual deterioration and complication rates. Conclusion: Both types of cyclophotocoagulation were equally effective in lowering intraocular pressure by 6 months, but the short duration protocol, using higher laser power, was able to achieve a greater and earlier reduction, at 3 months. However, the long duration protocol, using less laser power, appears better at reducing medication requirement by 6 months.
Persistent Identifierhttp://hdl.handle.net/10722/281918
ISSN
2015 SCImago Journal Rankings: 0.787

 

DC FieldValueLanguage
dc.contributor.authorChan, JC-H-
dc.contributor.authorChow, SC-
dc.contributor.authorLai, JS-M-
dc.date.accessioned2020-04-03T07:23:37Z-
dc.date.available2020-04-03T07:23:37Z-
dc.date.issued2020-
dc.identifier.citationClinical Ophthalmology, 2020, v. 2000 n. 14, p. 197-204-
dc.identifier.issn1177-5467-
dc.identifier.urihttp://hdl.handle.net/10722/281918-
dc.description.abstractPurpose: To compare the efficacy and safety of diode laser transscleral cyclophotocoagulation using either the long duration or short duration protocol. Methods: Retrospective series of 23 consecutive patients with glaucoma who underwent continuous-wave diode laser transscleral cyclophotocoagulation from August 2016 to July 2018 at a tertiary hospital in Hong Kong. Laser pulse duration for the long and short duration protocols was defined as 3.0-4.0 and 1.5-2.0 s, respectively. Results: There were 15 male and 8 female Chinese subjects (23 eyes), age 49-90 (71.3 +/- 2.7), with 10 subjects that underwent long duration cyclophotocoagulation (power 1239.2 +/- 78.3 mW, spots 13.9 +/- 1.4) and 13 subjects that had short duration cyclophotocoagulation (mean power 1817.3 +/- 85.7 mW, spots 14.4 +/- 1.0). Six months after long and short duration cyclophotocoagulation, intraocular pressure decreased significantly from 29.9 +/- 7.8 to 21.1 +/- 6.5 (p < 0.01), and from 35.4 +/- 2.7 to 24.1 +/- 3.4 (p = 0.04), respectively, while glaucoma medications decreased significantly by 1.4 +/- 0.5 (p = 0.02) in the long duration group only. Reduction of medications after short duration cyclophotocoagulation was less and did not reach statistical significance (0.9 +/- 0.9, p = 0.15). There was no significant difference of visual deterioration and complication rates. Conclusion: Both types of cyclophotocoagulation were equally effective in lowering intraocular pressure by 6 months, but the short duration protocol, using higher laser power, was able to achieve a greater and earlier reduction, at 3 months. However, the long duration protocol, using less laser power, appears better at reducing medication requirement by 6 months.-
dc.languageeng-
dc.publisherDove Medical Press Ltd. The Journal's web site is located at http://www.dovepress.com/articles.php?journal_id=9-
dc.relation.ispartofClinical Ophthalmology-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectcyclodiode-
dc.subjectcycloablation-
dc.subjectcyclodestruction-
dc.subjectcyclodestructive-
dc.subjectg-probe-
dc.titleEffectiveness and Safety of Long Duration versus Short Duration Diode Laser Transscleral Cyclophotocoagulation-
dc.typeArticle-
dc.identifier.emailChan, JC-H: jonochan@hku.hk-
dc.identifier.emailLai, JS-M: laism@hku.hk-
dc.identifier.authorityChan, JC-H=rp02113-
dc.identifier.authorityLai, JS-M=rp00295-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.2147/OPTH.S228910-
dc.identifier.scopuseid_2-s2.0-85078660745-
dc.identifier.hkuros309597-
dc.identifier.volume2000-
dc.identifier.issue14-
dc.identifier.spage197-
dc.identifier.epage204-
dc.publisher.placeNew Zealand-

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