Estimation of effective lens position using a method independent of preoperative keratometry readings.

Hdl Handle:
http://hdl.handle.net/10147/129744
Title:
Estimation of effective lens position using a method independent of preoperative keratometry readings.
Authors:
Dooley, Ian; Charalampidou, Sofia; Nolan, John; Loughman, James; Molloy, Laura; Beatty, Stephen
Affiliation:
Department of Ophthalmology, Waterford Regional Hospital, Institute of Eye Surgery, Dublin, Ireland. iandooley@eustace.net
Citation:
Estimation of effective lens position using a method independent of preoperative keratometry readings. 2011, 37 (3):506-12 J Cataract Refract Surg
Journal:
Journal of cataract and refractive surgery
Issue Date:
Mar-2011
URI:
http://hdl.handle.net/10147/129744
DOI:
10.1016/j.jcrs.2010.09.027
PubMed ID:
21333875
Abstract:
To evaluate the validity of a keratometry (K)-independent method of estimating effective lens position (ELP) before phacoemulsification cataract surgery.; Institute of Eye Surgery, Whitfield Clinic, Waterford, Ireland.; Evaluation of diagnostic test or technology.; The anterior chamber diameter and corneal height in eyes scheduled for cataract surgery were measured with a rotating Scheimpflug camera. Corneal height and anterior chamber diameter were used to estimate the ELP in a K-independent method (using the SRK/T [ELP(rs)] and Holladay 1 [ELP(rh)] formulas).; The mean ELP was calculated using the traditional (mean ELP(s) 5.59 mm ± 0.52 mm [SD]; mean ELP(h) 5.63 ± 0.42 mm) and K-independent (mean ELP(rs) 5.55 ± 0.42 mm; mean ELP(rh) ± SD 5.60 ± 0.36 mm) methods. Agreement between ELP(s) and ELP(rs) and between ELP(h) and ELP(rh) were represented by Bland-Altman plots, with mean differences (± 1.96 SD) of 0.06 ± 0.65 mm (range -0.59 to +0.71 mm; P=.08) in association with ELP(rs) and -0.04 ± 0.39 mm (range -0.43 to +0.35 mm; P=.08) in association with ELP(rh). The mean absolute error for ELP(s) versus ELP(rs) estimation and for ELP(h) versus ELP(rh) estimation was 0.242 ± 0.222 mm (range 0.001 to 1.272 mm) and 0.152 ± 0.137 mm (range 0.001 to 0.814 mm), respectively.; This study confirms that the K-independent ELP estimation method is comparable to traditional K-dependent methods and may be useful in post-refractive surgery patients.
Item Type:
Article
Language:
en
MeSH:
Adult; Aged; Aged, 80 and over; Anterior Chamber; Biometry; Capsulorhexis; Cataract; Cornea; Diagnostic Techniques, Ophthalmological; Humans; Lens Implantation, Intraocular; Lenses, Intraocular; Middle Aged; Phacoemulsification; Photography; Prospective Studies; Refraction, Ocular; Visual Acuity
ISSN:
1873-4502

Full metadata record

DC FieldValue Language
dc.contributor.authorDooley, Ianen
dc.contributor.authorCharalampidou, Sofiaen
dc.contributor.authorNolan, Johnen
dc.contributor.authorLoughman, Jamesen
dc.contributor.authorMolloy, Lauraen
dc.contributor.authorBeatty, Stephenen
dc.date.accessioned2011-05-18T10:36:55Z-
dc.date.available2011-05-18T10:36:55Z-
dc.date.issued2011-03-
dc.identifier.citationEstimation of effective lens position using a method independent of preoperative keratometry readings. 2011, 37 (3):506-12 J Cataract Refract Surgen
dc.identifier.issn1873-4502-
dc.identifier.pmid21333875-
dc.identifier.doi10.1016/j.jcrs.2010.09.027-
dc.identifier.urihttp://hdl.handle.net/10147/129744-
dc.description.abstractTo evaluate the validity of a keratometry (K)-independent method of estimating effective lens position (ELP) before phacoemulsification cataract surgery.-
dc.description.abstractInstitute of Eye Surgery, Whitfield Clinic, Waterford, Ireland.-
dc.description.abstractEvaluation of diagnostic test or technology.-
dc.description.abstractThe anterior chamber diameter and corneal height in eyes scheduled for cataract surgery were measured with a rotating Scheimpflug camera. Corneal height and anterior chamber diameter were used to estimate the ELP in a K-independent method (using the SRK/T [ELP(rs)] and Holladay 1 [ELP(rh)] formulas).-
dc.description.abstractThe mean ELP was calculated using the traditional (mean ELP(s) 5.59 mm ± 0.52 mm [SD]; mean ELP(h) 5.63 ± 0.42 mm) and K-independent (mean ELP(rs) 5.55 ± 0.42 mm; mean ELP(rh) ± SD 5.60 ± 0.36 mm) methods. Agreement between ELP(s) and ELP(rs) and between ELP(h) and ELP(rh) were represented by Bland-Altman plots, with mean differences (± 1.96 SD) of 0.06 ± 0.65 mm (range -0.59 to +0.71 mm; P=.08) in association with ELP(rs) and -0.04 ± 0.39 mm (range -0.43 to +0.35 mm; P=.08) in association with ELP(rh). The mean absolute error for ELP(s) versus ELP(rs) estimation and for ELP(h) versus ELP(rh) estimation was 0.242 ± 0.222 mm (range 0.001 to 1.272 mm) and 0.152 ± 0.137 mm (range 0.001 to 0.814 mm), respectively.-
dc.description.abstractThis study confirms that the K-independent ELP estimation method is comparable to traditional K-dependent methods and may be useful in post-refractive surgery patients.-
dc.language.isoenen
dc.subject.meshAdult-
dc.subject.meshAged-
dc.subject.meshAged, 80 and over-
dc.subject.meshAnterior Chamber-
dc.subject.meshBiometry-
dc.subject.meshCapsulorhexis-
dc.subject.meshCataract-
dc.subject.meshCornea-
dc.subject.meshDiagnostic Techniques, Ophthalmological-
dc.subject.meshHumans-
dc.subject.meshLens Implantation, Intraocular-
dc.subject.meshLenses, Intraocular-
dc.subject.meshMiddle Aged-
dc.subject.meshPhacoemulsification-
dc.subject.meshPhotography-
dc.subject.meshProspective Studies-
dc.subject.meshRefraction, Ocular-
dc.subject.meshVisual Acuity-
dc.titleEstimation of effective lens position using a method independent of preoperative keratometry readings.en
dc.typeArticleen
dc.contributor.departmentDepartment of Ophthalmology, Waterford Regional Hospital, Institute of Eye Surgery, Dublin, Ireland. iandooley@eustace.neten
dc.identifier.journalJournal of cataract and refractive surgeryen
dc.description.provinceMunster-

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