Surgically induced astigmatism after phacoemulsification with and without correction for posture-related ocular cyclotorsion: randomized controlled study.

Hdl Handle:
http://hdl.handle.net/10147/207941
Title:
Surgically induced astigmatism after phacoemulsification with and without correction for posture-related ocular cyclotorsion: randomized controlled study.
Authors:
Dooley, Ian; Charalampidou, Sofia; Malik, Arhsed; Ormonde, Greta; Loughman, James; Molloy, Laura; Beatty, Stephen
Affiliation:
Department of Ophthalmology, Waterford Regional Hospital, the Institute of Eye, Surgery, Whitfield Clinic, Suite 14, Whitfield Clinic, Cork Road, Waterford,, Ireland. iandooley@eustace.net
Citation:
J Cataract Refract Surg. 2010 Mar;36(3):413-7.
Journal:
Journal of cataract and refractive surgery
Issue Date:
1-Feb-2012
URI:
http://hdl.handle.net/10147/207941
DOI:
10.1016/j.jcrs.2009.10.033
PubMed ID:
20202538
Abstract:
PURPOSE: To report the impact of posture-related ocular cyclotorsion on one surgeon's surgically induced astigmatism (SIA) results and the variance in SIA. SETTING: Institute of Eye Surgery, Whitfield Clinic, Waterford, Ireland. METHODS: This prospective randomized controlled study included eyes that had phacoemulsification with intraocular lens implantation. Eyes were randomly assigned to have (intervention group) or not have (control group) correction for posture-related ocular cyclotorsion. In the intervention group, the clear corneal incision was placed precisely at the 120-degree meridian with instruments designed to correct posture-related ocular cyclotorsion. In the control group, the surgeon endeavored to place the incision at the 120-degree meridian, but without markings. RESULTS: The intervention group comprised 41 eyes and the control group, 61 eyes. The mean absolute SIA was 0.74 diopters (D) in the intervention group and 0.78 D in the control group; the difference between groups was not statistically significant (P>.5, unpaired 2-tailed Student t test). The variance in SIA was 0.29 D(2) and 0.31 D(2), respectively; the difference between groups was not statistically significant (P>.5, unpaired F test). CONCLUSIONS: Attempts to correct for posture-related ocular cyclotorsion did not influence SIA or its variance in a single-surgeon series. These results should be interpreted with full appreciation of the limitations of currently available techniques to correct for posture-related ocular cyclotorsion in the clinical setting.
Language:
eng
MeSH:
Aged; Astigmatism/*etiology/physiopathology; Contrast Sensitivity/physiology; Corneal Topography; Female; Humans; Lens Implantation, Intraocular; Male; Phacoemulsification/*adverse effects; *Posture; Prospective Studies; Torsion Abnormality/etiology/*surgery; Visual Acuity/physiology
ISSN:
1873-4502 (Electronic); 0886-3350 (Linking)

Full metadata record

DC FieldValue Language
dc.contributor.authorDooley, Ianen_GB
dc.contributor.authorCharalampidou, Sofiaen_GB
dc.contributor.authorMalik, Arhseden_GB
dc.contributor.authorOrmonde, Gretaen_GB
dc.contributor.authorLoughman, Jamesen_GB
dc.contributor.authorMolloy, Lauraen_GB
dc.contributor.authorBeatty, Stephenen_GB
dc.date.accessioned2012-02-01T10:52:02Z-
dc.date.available2012-02-01T10:52:02Z-
dc.date.issued2012-02-01T10:52:02Z-
dc.identifier.citationJ Cataract Refract Surg. 2010 Mar;36(3):413-7.en_GB
dc.identifier.issn1873-4502 (Electronic)en_GB
dc.identifier.issn0886-3350 (Linking)en_GB
dc.identifier.pmid20202538en_GB
dc.identifier.doi10.1016/j.jcrs.2009.10.033en_GB
dc.identifier.urihttp://hdl.handle.net/10147/207941-
dc.description.abstractPURPOSE: To report the impact of posture-related ocular cyclotorsion on one surgeon's surgically induced astigmatism (SIA) results and the variance in SIA. SETTING: Institute of Eye Surgery, Whitfield Clinic, Waterford, Ireland. METHODS: This prospective randomized controlled study included eyes that had phacoemulsification with intraocular lens implantation. Eyes were randomly assigned to have (intervention group) or not have (control group) correction for posture-related ocular cyclotorsion. In the intervention group, the clear corneal incision was placed precisely at the 120-degree meridian with instruments designed to correct posture-related ocular cyclotorsion. In the control group, the surgeon endeavored to place the incision at the 120-degree meridian, but without markings. RESULTS: The intervention group comprised 41 eyes and the control group, 61 eyes. The mean absolute SIA was 0.74 diopters (D) in the intervention group and 0.78 D in the control group; the difference between groups was not statistically significant (P>.5, unpaired 2-tailed Student t test). The variance in SIA was 0.29 D(2) and 0.31 D(2), respectively; the difference between groups was not statistically significant (P>.5, unpaired F test). CONCLUSIONS: Attempts to correct for posture-related ocular cyclotorsion did not influence SIA or its variance in a single-surgeon series. These results should be interpreted with full appreciation of the limitations of currently available techniques to correct for posture-related ocular cyclotorsion in the clinical setting.en_GB
dc.language.isoengen_GB
dc.subject.meshAgeden_GB
dc.subject.meshAstigmatism/*etiology/physiopathologyen_GB
dc.subject.meshContrast Sensitivity/physiologyen_GB
dc.subject.meshCorneal Topographyen_GB
dc.subject.meshFemaleen_GB
dc.subject.meshHumansen_GB
dc.subject.meshLens Implantation, Intraocularen_GB
dc.subject.meshMaleen_GB
dc.subject.meshPhacoemulsification/*adverse effectsen_GB
dc.subject.mesh*Postureen_GB
dc.subject.meshProspective Studiesen_GB
dc.subject.meshTorsion Abnormality/etiology/*surgeryen_GB
dc.subject.meshVisual Acuity/physiologyen_GB
dc.titleSurgically induced astigmatism after phacoemulsification with and without correction for posture-related ocular cyclotorsion: randomized controlled study.en_GB
dc.contributor.departmentDepartment of Ophthalmology, Waterford Regional Hospital, the Institute of Eye, Surgery, Whitfield Clinic, Suite 14, Whitfield Clinic, Cork Road, Waterford,, Ireland. iandooley@eustace.neten_GB
dc.identifier.journalJournal of cataract and refractive surgeryen_GB
dc.description.provinceMunster-
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