Postoperative intraocular lens rotation
Identifieur interne : 002193 ( Istex/Curation ); précédent : 002192; suivant : 002194Postoperative intraocular lens rotation
Auteurs : C. K Patel [Niger] ; Sue Ormonde ; Paul H. Rosen ; Anthony J. BronSource :
- Ophthalmology [ 0161-6420 ] ; 1999.
Abstract
Objective To compare the postoperative rotation of plate and loop haptic implants of spherical power to ascertain the optimal design appropriate for toric intraocular lenses (IOLs).Design Randomized, controlled trial.Participants Forty-eight patients attending for routine cataract surgery by phacoemulsification.Method Patients with cataract as the only ocular disease were randomly implanted with plate or loop haptic implants after uncomplicated phacoemulsification. The baseline position of the IOL was determined from a video frame acquired at the conclusion of surgery. Postoperative IOL position was documented using digital retroillumination images at 2 weeks and 6 months after surgery. Capsular fusion patterns were recorded using slit-lamp biomicroscopy. Correlation of IOL rotation with axial length, capsular contraction, and fusion was attempted.Main outcome measures Early IOL rotation, occurring between surgery and 2 weeks after surgery, was graded as mild (<10°), moderate (10°< to <30°), or severe (>30°) by a semiobjective online comparison of the images. Late IOL rotation, occurring between 2 weeks and 6 months, was measured more precisely using software developed specifically for the study.Results Twenty-three patients were allocated the loop haptic and 25 the plate haptic IOL. The groups were comparable for demographic variables and numbers of patients excluded from analysis (P > 0.05). Five (24%) of 21 of plate haptic IOLs underwent severe early rotation compared to 2 (9%) of 22 loop haptics (P = 0.36). The median late rotation was 6.8° for loop haptics compared to 0.6° for plate haptics (P = 0.0073). Between 2 weeks and 6 months, anticlockwise rotation had occurred in 16 (89%) of 18 loop haptic IOLs compared to 11 (52%) of 21 plate haptic IOLs (P = 0.0081).Conclusions Plate haptic IOLs show greater rotational stability than do loop haptics made from polypropylene once capsular fusion has taken place. Loop haptics invariably rotate anticlockwise after 2 weeks.
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DOI: 10.1016/S0161-6420(99)90504-3
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C. K Patel<affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation>Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Postoperative intraocular lens rotation</title><author><name sortKey="Patel, C K" sort="Patel, C K" uniqKey="Patel C" first="C. K" last="Patel">C. K Patel</name><affiliation wicri:level="1"><mods:affiliation>E-mail: ckpatel@ukgateway.net</mods:affiliation><country wicri:rule="url">Niger</country></affiliation><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author><author><name sortKey="Ormonde, Sue" sort="Ormonde, Sue" uniqKey="Ormonde S" first="Sue" last="Ormonde">Sue Ormonde</name><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author><author><name sortKey="Rosen, Paul H" sort="Rosen, Paul H" uniqKey="Rosen P" first="Paul H" last="Rosen">Paul H. Rosen</name><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author><author><name sortKey="Bron, Anthony J" sort="Bron, Anthony J" uniqKey="Bron A" first="Anthony J" last="Bron">Anthony J. Bron</name><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:45E1E9A291CFDEE5ED3FD411E0248AE9B107697A</idno><date when="1999" year="1999">1999</date><idno type="doi">10.1016/S0161-6420(99)90504-3</idno><idno type="url">https://api.istex.fr/document/45E1E9A291CFDEE5ED3FD411E0248AE9B107697A/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002193</idno><idno type="wicri:Area/Istex/Curation">002193</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Postoperative intraocular lens rotation</title><author><name sortKey="Patel, C K" sort="Patel, C K" uniqKey="Patel C" first="C. K" last="Patel">C. K Patel</name><affiliation wicri:level="1"><mods:affiliation>E-mail: ckpatel@ukgateway.net</mods:affiliation><country wicri:rule="url">Niger</country></affiliation><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author><author><name sortKey="Ormonde, Sue" sort="Ormonde, Sue" uniqKey="Ormonde S" first="Sue" last="Ormonde">Sue Ormonde</name><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author><author><name sortKey="Rosen, Paul H" sort="Rosen, Paul H" uniqKey="Rosen P" first="Paul H" last="Rosen">Paul H. Rosen</name><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author><author><name sortKey="Bron, Anthony J" sort="Bron, Anthony J" uniqKey="Bron A" first="Anthony J" last="Bron">Anthony J. Bron</name><affiliation><mods:affiliation>Oxford Eye Hospital, Radcliffe Infirmary, Oxford, England UK</mods:affiliation><wicri:noCountry code="subField">England UK</wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j">Ophthalmology</title><title level="j" type="abbrev">OPHTHA</title><idno type="ISSN">0161-6420</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1999">1999</date><biblScope unit="volume">106</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="page" from="2190">2190</biblScope><biblScope unit="page" to="2196">2196</biblScope></imprint><idno type="ISSN">0161-6420</idno></series><idno type="istex">45E1E9A291CFDEE5ED3FD411E0248AE9B107697A</idno><idno type="DOI">10.1016/S0161-6420(99)90504-3</idno><idno type="PII">S0161-6420(99)90504-3</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0161-6420</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Objective To compare the postoperative rotation of plate and loop haptic implants of spherical power to ascertain the optimal design appropriate for toric intraocular lenses (IOLs).Design Randomized, controlled trial.Participants Forty-eight patients attending for routine cataract surgery by phacoemulsification.Method Patients with cataract as the only ocular disease were randomly implanted with plate or loop haptic implants after uncomplicated phacoemulsification. The baseline position of the IOL was determined from a video frame acquired at the conclusion of surgery. Postoperative IOL position was documented using digital retroillumination images at 2 weeks and 6 months after surgery. Capsular fusion patterns were recorded using slit-lamp biomicroscopy. Correlation of IOL rotation with axial length, capsular contraction, and fusion was attempted.Main outcome measures Early IOL rotation, occurring between surgery and 2 weeks after surgery, was graded as mild (<10°), moderate (10°< to <30°), or severe (>30°) by a semiobjective online comparison of the images. Late IOL rotation, occurring between 2 weeks and 6 months, was measured more precisely using software developed specifically for the study.Results Twenty-three patients were allocated the loop haptic and 25 the plate haptic IOL. The groups were comparable for demographic variables and numbers of patients excluded from analysis (P > 0.05). Five (24%) of 21 of plate haptic IOLs underwent severe early rotation compared to 2 (9%) of 22 loop haptics (P = 0.36). The median late rotation was 6.8° for loop haptics compared to 0.6° for plate haptics (P = 0.0073). Between 2 weeks and 6 months, anticlockwise rotation had occurred in 16 (89%) of 18 loop haptic IOLs compared to 11 (52%) of 21 plate haptic IOLs (P = 0.0081).Conclusions Plate haptic IOLs show greater rotational stability than do loop haptics made from polypropylene once capsular fusion has taken place. Loop haptics invariably rotate anticlockwise after 2 weeks.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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