Biometry and Formula Accuracy With Intraocular Lenses Used for Cataract Surgery in Extreme Hyperopia
Identifieur interne : 000A01 ( PascalFrancis/Corpus ); précédent : 000A00; suivant : 000A02Biometry and Formula Accuracy With Intraocular Lenses Used for Cataract Surgery in Extreme Hyperopia
Auteurs : Robert E. Maclaren ; Mythili Natkunarajah ; Yasmin Riaz ; Rupert R. A. Bourne ; Marie Restori ; Bruce D. S. AllanSource :
- American journal of ophthalmology [ 0002-9394 ] ; 2007.
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Abstract
PURPOSE: To audit intraocular lens (IOL) power predictions for cataract surgery in extreme hyperopia and to compare the accuracy across different biometry formulae and IOL types. • DESIGN: A retrospective analysis of 76 eyes from 56 patients undergoing cataract surgery with IOLS ranging in power from 30 to 35 diopters (D). • METHODS: Axial lengths, corneal powers and anterior chamber depths were measured with ultrasound or optical methods, and the IOLMaster (Carl Zeiss Meditech, Inc, Dublin, California, USA) software was used to predict the refractive outcome for each IOL used. Differences between the predicted and actual postoperative refraction were then analyzed for each formula. • RESULTS: In practice, 55% of patients were within ±1.0 D of the refraction predicted by their surgeon. In theory, the Haigis formula would have given the smallest mean refractive error (+0.51 ± 0.12 D), followed by the HofferQ (-0.70 ± 0.14 D), Holladay 1 (-1.11 ± 0.13 D), and SRK/T formulae (-1.45 ± 0.14 D). The Haigis formula overpredicted the lens power required, which would have generated a myopic result. The other formulae underpredicted the lens power required and would have generated a hyperopic result. There was a significant difference between lens designs: the Haigis was more accurate for open-loop, whereas the Hoffer Q was more accurate for plate-haptic lenses. The anterior chamber depth measurement could also be used to predict changes in intraocular pressure after surgery. • CONCLUSION: This represents the largest published series to date of biometry predictions for cataract surgery in extreme hyperopia and confirms the Haigis formula to be the most accurate. A consistent difference between open-loop and plate-haptic lenses suggests that haptic design may influence the effective lens position in very small eyes. We further propose a simple formula to optimize the Haigis and Hoffer Q formulae in patients with extreme hyperopia.
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Format Inist (serveur)
| NO : | PASCAL 08-0056145 INIST |
|---|---|
| ET : | Biometry and Formula Accuracy With Intraocular Lenses Used for Cataract Surgery in Extreme Hyperopia |
| AU : | MACLAREN (Robert E.); NATKUNARAJAH (Mythili); RIAZ (Yasmin); BOURNE (Rupert R. A.); RESTORI (Marie); ALLAN (Bruce D. S.) |
| AF : | Moorfields Eye Hospital, City Road/London/Royaume-Uni (1 aut., 3 aut., 4 aut., 5 aut., 6 aut.); Institute of Ophthalmology, University College London/London/Royaume-Uni (1 aut., 2 aut., 6 aut.) |
| DT : | Publication en série; Niveau analytique |
| SO : | American journal of ophthalmology; ISSN 0002-9394; Coden AJOPAA; Etats-Unis; Da. 2007; Vol. 143; No. 6; Pp. 920-931; Bibl. 22 ref. |
| LA : | Anglais |
| EA : | PURPOSE: To audit intraocular lens (IOL) power predictions for cataract surgery in extreme hyperopia and to compare the accuracy across different biometry formulae and IOL types. • DESIGN: A retrospective analysis of 76 eyes from 56 patients undergoing cataract surgery with IOLS ranging in power from 30 to 35 diopters (D). • METHODS: Axial lengths, corneal powers and anterior chamber depths were measured with ultrasound or optical methods, and the IOLMaster (Carl Zeiss Meditech, Inc, Dublin, California, USA) software was used to predict the refractive outcome for each IOL used. Differences between the predicted and actual postoperative refraction were then analyzed for each formula. • RESULTS: In practice, 55% of patients were within ±1.0 D of the refraction predicted by their surgeon. In theory, the Haigis formula would have given the smallest mean refractive error (+0.51 ± 0.12 D), followed by the HofferQ (-0.70 ± 0.14 D), Holladay 1 (-1.11 ± 0.13 D), and SRK/T formulae (-1.45 ± 0.14 D). The Haigis formula overpredicted the lens power required, which would have generated a myopic result. The other formulae underpredicted the lens power required and would have generated a hyperopic result. There was a significant difference between lens designs: the Haigis was more accurate for open-loop, whereas the Hoffer Q was more accurate for plate-haptic lenses. The anterior chamber depth measurement could also be used to predict changes in intraocular pressure after surgery. • CONCLUSION: This represents the largest published series to date of biometry predictions for cataract surgery in extreme hyperopia and confirms the Haigis formula to be the most accurate. A consistent difference between open-loop and plate-haptic lenses suggests that haptic design may influence the effective lens position in very small eyes. We further propose a simple formula to optimize the Haigis and Hoffer Q formulae in patients with extreme hyperopia. |
| CC : | 002B09N; 002B09G; 002B09K |
| FD : | Cataracte; Précision; Lentille intraoculaire; Hypermétropie; Utilisation; Chirurgie; Ophtalmologie; Traitement |
| FG : | Pathologie du cristallin; Pathologie de l'oeil; Pathologie du segment antérieur; Trouble de la réfraction oculaire; Trouble de la vision |
| ED : | Cataract; Accuracy; Intraocular lens; Hypermetropia; Use; Surgery; Ophthalmology; Treatment |
| EG : | Lens disease; Eye disease; Anterior segment disease; Refractive error; Vision disorder |
| SD : | Catarata; Precisión; Lente intraocular; Hipermetropía; Uso; Cirugía; Oftalmología; Tratamiento |
| LO : | INIST-2012.354000162681130020 |
| ID : | 08-0056145 |
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Maclaren</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Natkunarajah, Mythili" sort="Natkunarajah, Mythili" uniqKey="Natkunarajah M" first="Mythili" last="Natkunarajah">Mythili Natkunarajah</name><affiliation><inist:fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Riaz, Yasmin" sort="Riaz, Yasmin" uniqKey="Riaz Y" first="Yasmin" last="Riaz">Yasmin Riaz</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bourne, Rupert R A" sort="Bourne, Rupert R A" uniqKey="Bourne R" first="Rupert R. A." last="Bourne">Rupert R. A. Bourne</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Restori, Marie" sort="Restori, Marie" uniqKey="Restori M" first="Marie" last="Restori">Marie Restori</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Allan, Bruce D S" sort="Allan, Bruce D S" uniqKey="Allan B" first="Bruce D. S." last="Allan">Bruce D. S. Allan</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">08-0056145</idno><date when="2007">2007</date><idno type="stanalyst">PASCAL 08-0056145 INIST</idno><idno type="RBID">Pascal:08-0056145</idno><idno type="wicri:Area/PascalFrancis/Corpus">000A01</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Biometry and Formula Accuracy With Intraocular Lenses Used for Cataract Surgery in Extreme Hyperopia</title><author><name sortKey="Maclaren, Robert E" sort="Maclaren, Robert E" uniqKey="Maclaren R" first="Robert E." last="Maclaren">Robert E. Maclaren</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Natkunarajah, Mythili" sort="Natkunarajah, Mythili" uniqKey="Natkunarajah M" first="Mythili" last="Natkunarajah">Mythili Natkunarajah</name><affiliation><inist:fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Riaz, Yasmin" sort="Riaz, Yasmin" uniqKey="Riaz Y" first="Yasmin" last="Riaz">Yasmin Riaz</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bourne, Rupert R A" sort="Bourne, Rupert R A" uniqKey="Bourne R" first="Rupert R. A." last="Bourne">Rupert R. A. Bourne</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Restori, Marie" sort="Restori, Marie" uniqKey="Restori M" first="Marie" last="Restori">Marie Restori</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Allan, Bruce D S" sort="Allan, Bruce D S" uniqKey="Allan B" first="Bruce D. S." last="Allan">Bruce D. S. Allan</name><affiliation><inist:fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14></affiliation></author></analytic><series><title level="j" type="main">American journal of ophthalmology</title><title level="j" type="abbreviated">Am. j. ophthalmol.</title><idno type="ISSN">0002-9394</idno><imprint><date when="2007">2007</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">American journal of ophthalmology</title><title level="j" type="abbreviated">Am. j. ophthalmol.</title><idno type="ISSN">0002-9394</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accuracy</term><term>Cataract</term><term>Hypermetropia</term><term>Intraocular lens</term><term>Ophthalmology</term><term>Surgery</term><term>Treatment</term><term>Use</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Cataracte</term><term>Précision</term><term>Lentille intraoculaire</term><term>Hypermétropie</term><term>Utilisation</term><term>Chirurgie</term><term>Ophtalmologie</term><term>Traitement</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">PURPOSE: To audit intraocular lens (IOL) power predictions for cataract surgery in extreme hyperopia and to compare the accuracy across different biometry formulae and IOL types. • DESIGN: A retrospective analysis of 76 eyes from 56 patients undergoing cataract surgery with IOLS ranging in power from 30 to 35 diopters (D). • METHODS: Axial lengths, corneal powers and anterior chamber depths were measured with ultrasound or optical methods, and the IOLMaster (Carl Zeiss Meditech, Inc, Dublin, California, USA) software was used to predict the refractive outcome for each IOL used. Differences between the predicted and actual postoperative refraction were then analyzed for each formula. • RESULTS: In practice, 55% of patients were within ±1.0 D of the refraction predicted by their surgeon. In theory, the Haigis formula would have given the smallest mean refractive error (+0.51 ± 0.12 D), followed by the HofferQ (-0.70 ± 0.14 D), Holladay 1 (-1.11 ± 0.13 D), and SRK/T formulae (-1.45 ± 0.14 D). The Haigis formula overpredicted the lens power required, which would have generated a myopic result. The other formulae underpredicted the lens power required and would have generated a hyperopic result. There was a significant difference between lens designs: the Haigis was more accurate for open-loop, whereas the Hoffer Q was more accurate for plate-haptic lenses. The anterior chamber depth measurement could also be used to predict changes in intraocular pressure after surgery. • CONCLUSION: This represents the largest published series to date of biometry predictions for cataract surgery in extreme hyperopia and confirms the Haigis formula to be the most accurate. A consistent difference between open-loop and plate-haptic lenses suggests that haptic design may influence the effective lens position in very small eyes. We further propose a simple formula to optimize the Haigis and Hoffer Q formulae in patients with extreme hyperopia.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0002-9394</s0></fA01><fA02 i1="01"><s0>AJOPAA</s0></fA02><fA03 i2="1"><s0>Am. j. ophthalmol.</s0></fA03><fA05><s2>143</s2></fA05><fA06><s2>6</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Biometry and Formula Accuracy With Intraocular Lenses Used for Cataract Surgery in Extreme Hyperopia</s1></fA08><fA11 i1="01" i2="1"><s1>MACLAREN (Robert E.)</s1></fA11><fA11 i1="02" i2="1"><s1>NATKUNARAJAH (Mythili)</s1></fA11><fA11 i1="03" i2="1"><s1>RIAZ (Yasmin)</s1></fA11><fA11 i1="04" i2="1"><s1>BOURNE (Rupert R. A.)</s1></fA11><fA11 i1="05" i2="1"><s1>RESTORI (Marie)</s1></fA11><fA11 i1="06" i2="1"><s1>ALLAN (Bruce D. S.)</s1></fA11><fA14 i1="01"><s1>Moorfields Eye Hospital, City Road</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="02"><s1>Institute of Ophthalmology, University College London</s1><s2>London</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></fA14><fA20><s1>920-931</s1></fA20><fA21><s1>2007</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>2012</s2><s5>354000162681130020</s5></fA43><fA44><s0>0000</s0><s1>© 2008 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>22 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>08-0056145</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>American journal of ophthalmology</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>PURPOSE: To audit intraocular lens (IOL) power predictions for cataract surgery in extreme hyperopia and to compare the accuracy across different biometry formulae and IOL types. • DESIGN: A retrospective analysis of 76 eyes from 56 patients undergoing cataract surgery with IOLS ranging in power from 30 to 35 diopters (D). • METHODS: Axial lengths, corneal powers and anterior chamber depths were measured with ultrasound or optical methods, and the IOLMaster (Carl Zeiss Meditech, Inc, Dublin, California, USA) software was used to predict the refractive outcome for each IOL used. Differences between the predicted and actual postoperative refraction were then analyzed for each formula. • RESULTS: In practice, 55% of patients were within ±1.0 D of the refraction predicted by their surgeon. In theory, the Haigis formula would have given the smallest mean refractive error (+0.51 ± 0.12 D), followed by the HofferQ (-0.70 ± 0.14 D), Holladay 1 (-1.11 ± 0.13 D), and SRK/T formulae (-1.45 ± 0.14 D). The Haigis formula overpredicted the lens power required, which would have generated a myopic result. The other formulae underpredicted the lens power required and would have generated a hyperopic result. There was a significant difference between lens designs: the Haigis was more accurate for open-loop, whereas the Hoffer Q was more accurate for plate-haptic lenses. The anterior chamber depth measurement could also be used to predict changes in intraocular pressure after surgery. • CONCLUSION: This represents the largest published series to date of biometry predictions for cataract surgery in extreme hyperopia and confirms the Haigis formula to be the most accurate. A consistent difference between open-loop and plate-haptic lenses suggests that haptic design may influence the effective lens position in very small eyes. We further propose a simple formula to optimize the Haigis and Hoffer Q formulae in patients with extreme hyperopia.</s0></fC01><fC02 i1="01" i2="X"><s0>002B09N</s0></fC02><fC02 i1="02" i2="X"><s0>002B09G</s0></fC02><fC02 i1="03" i2="X"><s0>002B09K</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Cataracte</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Cataract</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Catarata</s0><s5>01</s5></fC03><fC03 i1="02" i2="X" l="FRE"><s0>Précision</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="ENG"><s0>Accuracy</s0><s5>02</s5></fC03><fC03 i1="02" i2="X" l="SPA"><s0>Precisión</s0><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Lentille intraoculaire</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Intraocular lens</s0><s5>03</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Lente intraocular</s0><s5>03</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Hypermétropie</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Hypermetropia</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Hipermetropía</s0><s5>04</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Utilisation</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Use</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Uso</s0><s5>05</s5></fC03><fC03 i1="06" i2="X" l="FRE"><s0>Chirurgie</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="ENG"><s0>Surgery</s0><s5>06</s5></fC03><fC03 i1="06" i2="X" l="SPA"><s0>Cirugía</s0><s5>06</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Ophtalmologie</s0><s5>08</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Ophthalmology</s0><s5>08</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Oftalmología</s0><s5>08</s5></fC03><fC03 i1="08" i2="X" l="FRE"><s0>Traitement</s0><s5>25</s5></fC03><fC03 i1="08" i2="X" l="ENG"><s0>Treatment</s0><s5>25</s5></fC03><fC03 i1="08" i2="X" l="SPA"><s0>Tratamiento</s0><s5>25</s5></fC03><fC07 i1="01" i2="X" l="FRE"><s0>Pathologie du cristallin</s0><s5>37</s5></fC07><fC07 i1="01" i2="X" l="ENG"><s0>Lens disease</s0><s5>37</s5></fC07><fC07 i1="01" i2="X" l="SPA"><s0>Cristalino patología</s0><s5>37</s5></fC07><fC07 i1="02" i2="X" l="FRE"><s0>Pathologie de l'oeil</s0><s5>38</s5></fC07><fC07 i1="02" i2="X" l="ENG"><s0>Eye disease</s0><s5>38</s5></fC07><fC07 i1="02" i2="X" l="SPA"><s0>Ojo patología</s0><s5>38</s5></fC07><fC07 i1="03" i2="X" l="FRE"><s0>Pathologie du segment antérieur</s0><s2>NM</s2><s5>39</s5></fC07><fC07 i1="03" i2="X" l="ENG"><s0>Anterior segment disease</s0><s2>NM</s2><s5>39</s5></fC07><fC07 i1="03" i2="X" l="SPA"><s0>Segmento anterior patología</s0><s2>NM</s2><s5>39</s5></fC07><fC07 i1="04" i2="X" l="FRE"><s0>Trouble de la réfraction oculaire</s0><s5>40</s5></fC07><fC07 i1="04" i2="X" l="ENG"><s0>Refractive error</s0><s5>40</s5></fC07><fC07 i1="04" i2="X" l="SPA"><s0>Trastorno refracción ocular</s0><s5>40</s5></fC07><fC07 i1="05" i2="X" l="FRE"><s0>Trouble de la vision</s0><s5>41</s5></fC07><fC07 i1="05" i2="X" l="ENG"><s0>Vision disorder</s0><s5>41</s5></fC07><fC07 i1="05" i2="X" l="SPA"><s0>Trastorno visión</s0><s5>41</s5></fC07><fN21><s1>028</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard><server><NO>PASCAL 08-0056145 INIST</NO><ET>Biometry and Formula Accuracy With Intraocular Lenses Used for Cataract Surgery in Extreme Hyperopia</ET><AU>MACLAREN (Robert E.); NATKUNARAJAH (Mythili); RIAZ (Yasmin); BOURNE (Rupert R. A.); RESTORI (Marie); ALLAN (Bruce D. S.)</AU><AF>Moorfields Eye Hospital, City Road/London/Royaume-Uni (1 aut., 3 aut., 4 aut., 5 aut., 6 aut.); Institute of Ophthalmology, University College London/London/Royaume-Uni (1 aut., 2 aut., 6 aut.)</AF><DT>Publication en série; Niveau analytique</DT><SO>American journal of ophthalmology; ISSN 0002-9394; Coden AJOPAA; Etats-Unis; Da. 2007; Vol. 143; No. 6; Pp. 920-931; Bibl. 22 ref.</SO><LA>Anglais</LA><EA>PURPOSE: To audit intraocular lens (IOL) power predictions for cataract surgery in extreme hyperopia and to compare the accuracy across different biometry formulae and IOL types. • DESIGN: A retrospective analysis of 76 eyes from 56 patients undergoing cataract surgery with IOLS ranging in power from 30 to 35 diopters (D). • METHODS: Axial lengths, corneal powers and anterior chamber depths were measured with ultrasound or optical methods, and the IOLMaster (Carl Zeiss Meditech, Inc, Dublin, California, USA) software was used to predict the refractive outcome for each IOL used. Differences between the predicted and actual postoperative refraction were then analyzed for each formula. • RESULTS: In practice, 55% of patients were within ±1.0 D of the refraction predicted by their surgeon. In theory, the Haigis formula would have given the smallest mean refractive error (+0.51 ± 0.12 D), followed by the HofferQ (-0.70 ± 0.14 D), Holladay 1 (-1.11 ± 0.13 D), and SRK/T formulae (-1.45 ± 0.14 D). The Haigis formula overpredicted the lens power required, which would have generated a myopic result. The other formulae underpredicted the lens power required and would have generated a hyperopic result. There was a significant difference between lens designs: the Haigis was more accurate for open-loop, whereas the Hoffer Q was more accurate for plate-haptic lenses. The anterior chamber depth measurement could also be used to predict changes in intraocular pressure after surgery. • CONCLUSION: This represents the largest published series to date of biometry predictions for cataract surgery in extreme hyperopia and confirms the Haigis formula to be the most accurate. A consistent difference between open-loop and plate-haptic lenses suggests that haptic design may influence the effective lens position in very small eyes. We further propose a simple formula to optimize the Haigis and Hoffer Q formulae in patients with extreme hyperopia.</EA><CC>002B09N; 002B09G; 002B09K</CC><FD>Cataracte; Précision; Lentille intraoculaire; Hypermétropie; Utilisation; Chirurgie; Ophtalmologie; Traitement</FD><FG>Pathologie du cristallin; Pathologie de l'oeil; Pathologie du segment antérieur; Trouble de la réfraction oculaire; Trouble de la vision</FG><ED>Cataract; Accuracy; Intraocular lens; Hypermetropia; Use; Surgery; Ophthalmology; Treatment</ED><EG>Lens disease; Eye disease; Anterior segment disease; Refractive error; Vision disorder</EG><SD>Catarata; Precisión; Lente intraocular; Hipermetropía; Uso; Cirugía; Oftalmología; Tratamiento</SD><LO>INIST-2012.354000162681130020</LO><ID>08-0056145</ID></server></inist></record>Pour manipuler ce document sous Unix (Dilib)
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