A comparative study of complications of cataract surgery with phacoemulsification in eyes with high and normal axial length
Identifieur interne : 002439 ( Ncbi/Merge ); précédent : 002438; suivant : 002440A comparative study of complications of cataract surgery with phacoemulsification in eyes with high and normal axial length
Auteurs : Hamid Fesharaki [Iran] ; Alireza Peyman [Iran] ; Mehdi Rowshandel [Iran] ; Mohammadreza Peyman [Malaisie] ; Pegah Alizadeh [Iran] ; Mohammadreza Akhlaghi [Iran] ; Alireza Ashtari [Iran]Source :
- Advanced Biomedical Research [ 2277-9175 ] ; 2012.
Abstract
This study performed to assess the safety of cataract extraction with phacoemulsification and intraocular lens (IOL) implantation in patients with high axial length compared with patients with normal axial length.
A total of 866 eyes were enrolled in this study; all subjects underwent phacoemulsification and IOL implantation for treatment of cataract. Seven hundred and nine eyes fell in the normal group with axial lengths ranging between 21 and 24.5 mm, and 157 eyes were considered myopic with axial length equal or greater than 26 mm. The two groups were compared regarding intraoperative surgical complications, such as vitreous loss, posterior capsular rupture, nucleolus drop, and undesirable implantation of IOL in the anterior chamber.
Age was a risk factor in both groups, with each year increase of age, the chance of incidence of intraoperative complications increased 1.04-folds (
As the results illustrate, in this survey, age and high axial length were statistically significant risk factors for incidence of intraoperative complications of cataract surgery with phacoemulsification technique. Anticipation of these complications and also preparation and prophylactic measures may decrease incidence of these complications.
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DOI: 10.4103/2277-9175.102971
PubMed: 23326797
PubMed Central: 3544086
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A comparative study of complications of cataract surgery with phacoemulsification in eyes with high and normal axial length</title><author><name sortKey="Fesharaki, Hamid" sort="Fesharaki, Hamid" uniqKey="Fesharaki H" first="Hamid" last="Fesharaki">Hamid Fesharaki</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Peyman, Alireza" sort="Peyman, Alireza" uniqKey="Peyman A" first="Alireza" last="Peyman">Alireza Peyman</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Rowshandel, Mehdi" sort="Rowshandel, Mehdi" uniqKey="Rowshandel M" first="Mehdi" last="Rowshandel">Mehdi Rowshandel</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Peyman, Mohammadreza" sort="Peyman, Mohammadreza" uniqKey="Peyman M" first="Mohammadreza" last="Peyman">Mohammadreza Peyman</name><affiliation wicri:level="1"><nlm:aff id="aff2">Department of Ophthalmology, University of Malaya, Medical Center, Kuala Lumpur, Malaysia</nlm:aff><country xml:lang="fr">Malaisie</country><wicri:regionArea>Department of Ophthalmology, University of Malaya, Medical Center, Kuala Lumpur</wicri:regionArea><wicri:noRegion>Kuala Lumpur</wicri:noRegion></affiliation></author><author><name sortKey="Alizadeh, Pegah" sort="Alizadeh, Pegah" uniqKey="Alizadeh P" first="Pegah" last="Alizadeh">Pegah Alizadeh</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Akhlaghi, Mohammadreza" sort="Akhlaghi, Mohammadreza" uniqKey="Akhlaghi M" first="Mohammadreza" last="Akhlaghi">Mohammadreza Akhlaghi</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Ashtari, Alireza" sort="Ashtari, Alireza" uniqKey="Ashtari A" first="Alireza" last="Ashtari">Alireza Ashtari</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">23326797</idno><idno type="pmc">3544086</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3544086</idno><idno type="RBID">PMC:3544086</idno><idno type="doi">10.4103/2277-9175.102971</idno><date when="2012">2012</date><idno type="wicri:Area/Pmc/Corpus">001B61</idno><idno type="wicri:Area/Pmc/Curation">001B61</idno><idno type="wicri:Area/Pmc/Checkpoint">001882</idno><idno type="wicri:Area/Ncbi/Merge">002439</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A comparative study of complications of cataract surgery with phacoemulsification in eyes with high and normal axial length</title><author><name sortKey="Fesharaki, Hamid" sort="Fesharaki, Hamid" uniqKey="Fesharaki H" first="Hamid" last="Fesharaki">Hamid Fesharaki</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Peyman, Alireza" sort="Peyman, Alireza" uniqKey="Peyman A" first="Alireza" last="Peyman">Alireza Peyman</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Rowshandel, Mehdi" sort="Rowshandel, Mehdi" uniqKey="Rowshandel M" first="Mehdi" last="Rowshandel">Mehdi Rowshandel</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Peyman, Mohammadreza" sort="Peyman, Mohammadreza" uniqKey="Peyman M" first="Mohammadreza" last="Peyman">Mohammadreza Peyman</name><affiliation wicri:level="1"><nlm:aff id="aff2">Department of Ophthalmology, University of Malaya, Medical Center, Kuala Lumpur, Malaysia</nlm:aff><country xml:lang="fr">Malaisie</country><wicri:regionArea>Department of Ophthalmology, University of Malaya, Medical Center, Kuala Lumpur</wicri:regionArea><wicri:noRegion>Kuala Lumpur</wicri:noRegion></affiliation></author><author><name sortKey="Alizadeh, Pegah" sort="Alizadeh, Pegah" uniqKey="Alizadeh P" first="Pegah" last="Alizadeh">Pegah Alizadeh</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Akhlaghi, Mohammadreza" sort="Akhlaghi, Mohammadreza" uniqKey="Akhlaghi M" first="Mohammadreza" last="Akhlaghi">Mohammadreza Akhlaghi</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author><author><name sortKey="Ashtari, Alireza" sort="Ashtari, Alireza" uniqKey="Ashtari A" first="Alireza" last="Ashtari">Alireza Ashtari</name><affiliation wicri:level="1"><nlm:aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea><wicri:noRegion>Isfahan</wicri:noRegion></affiliation></author></analytic><series><title level="j">Advanced Biomedical Research</title><idno type="eISSN">2277-9175</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Background:</title><p>This study performed to assess the safety of cataract extraction with phacoemulsification and intraocular lens (IOL) implantation in patients with high axial length compared with patients with normal axial length.</p></sec><sec id="st2"><title>Materials and Methods:</title><p>A total of 866 eyes were enrolled in this study; all subjects underwent phacoemulsification and IOL implantation for treatment of cataract. Seven hundred and nine eyes fell in the normal group with axial lengths ranging between 21 and 24.5 mm, and 157 eyes were considered myopic with axial length equal or greater than 26 mm. The two groups were compared regarding intraoperative surgical complications, such as vitreous loss, posterior capsular rupture, nucleolus drop, and undesirable implantation of IOL in the anterior chamber.</p></sec><sec id="st3"><title>Results:</title><p>Age was a risk factor in both groups, with each year increase of age, the chance of incidence of intraoperative complications increased 1.04-folds (<italic>P</italic> = 0.03). And with 1 mm increase in axial length, the incidence of complications raised 1.22-folds (<italic>P</italic> = 0.007). There was no significant correlation between axial length and incidence of vitreous loss, although the incidence of posterior capsular rupture and nucleus fragment drops increased with increment in the axial length. Sex of the patients and side of the left or right eye were not found to be significant risk factors.</p></sec><sec id="st4"><title>Conclusions:</title><p>As the results illustrate, in this survey, age and high axial length were statistically significant risk factors for incidence of intraoperative complications of cataract surgery with phacoemulsification technique. Anticipation of these complications and also preparation and prophylactic measures may decrease incidence of these complications.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Abraham, Ag" uniqKey="Abraham A">AG Abraham</name></author><author><name sortKey="Condon, Ng" uniqKey="Condon N">NG Condon</name></author><author><name sortKey="West Gower, E" uniqKey="West Gower E">E West Gower</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Maberley, Da" uniqKey="Maberley D">DA Maberley</name></author><author><name sortKey="Hollands, H" uniqKey="Hollands H">H Hollands</name></author><author><name sortKey="Chuo, J" uniqKey="Chuo J">J Chuo</name></author><author><name sortKey="Tam, G" uniqKey="Tam G">G Tam</name></author><author><name sortKey="Konkal, J" uniqKey="Konkal J">J Konkal</name></author><author><name sortKey="Roesch, M" uniqKey="Roesch M">M 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K" uniqKey="Apostolakis K">K Apostolakis</name></author><author><name sortKey="Feretis, D" uniqKey="Feretis D">D Feretis</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Cheng, Jw" uniqKey="Cheng J">JW Cheng</name></author><author><name sortKey="Wei, Rl" uniqKey="Wei R">RL Wei</name></author><author><name sortKey="Li, Y" uniqKey="Li Y">Y Li</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Tous, Hm" uniqKey="Tous H">HM Tous</name></author><author><name sortKey="Nevarez, J" uniqKey="Nevarez J">J Nevárez</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Arbisser, Lb" uniqKey="Arbisser L">LB Arbisser</name></author><author><name sortKey="Charles, S" uniqKey="Charles S">S Charles</name></author><author><name sortKey="Howcroft, M" uniqKey="Howcroft M">M Howcroft</name></author><author><name sortKey="Werner, L" uniqKey="Werner L">L 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Adv Biomed Res</journal-id><journal-id journal-id-type="iso-abbrev">Adv Biomed Res</journal-id><journal-id journal-id-type="publisher-id">ABR</journal-id><journal-title-group><journal-title>Advanced Biomedical Research</journal-title></journal-title-group><issn pub-type="epub">2277-9175</issn><publisher><publisher-name>Medknow Publications & Media Pvt Ltd</publisher-name><publisher-loc>India</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">23326797</article-id><article-id pub-id-type="pmc">3544086</article-id><article-id pub-id-type="publisher-id">ABR-1-67</article-id><article-id pub-id-type="doi">10.4103/2277-9175.102971</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>A comparative study of complications of cataract surgery with phacoemulsification in eyes with high and normal axial length</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Fesharaki</surname><given-names>Hamid</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Peyman</surname><given-names>Alireza</given-names></name><xref ref-type="aff" rid="aff1"></xref><xref ref-type="corresp" rid="cor1"></xref></contrib><contrib contrib-type="author"><name><surname>Rowshandel</surname><given-names>Mehdi</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Peyman</surname><given-names>Mohammadreza</given-names></name><xref ref-type="aff" rid="aff2">1</xref></contrib><contrib contrib-type="author"><name><surname>Alizadeh</surname><given-names>Pegah</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Akhlaghi</surname><given-names>Mohammadreza</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Ashtari</surname><given-names>AliReza</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib></contrib-group><aff id="aff1">Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</aff><aff id="aff2"><label>1</label>Department of Ophthalmology, University of Malaya, Medical Center, Kuala Lumpur, Malaysia</aff><author-notes><corresp id="cor1"><bold>Address for correspondence:</bold> Mr. Alireza Peyman, Isfahan Eye Research Center, Isfahan University of Medical Sciences, Isfahan, Iran. E-mail: <email xlink:href="alipeyman@yahoo.com">alipeyman@yahoo.com</email></corresp></author-notes><pub-date pub-type="collection"><year>2012</year></pub-date><pub-date pub-type="epub"><day>31</day><month>10</month><year>2012</year></pub-date><volume>1</volume><elocation-id>67</elocation-id><history><date date-type="received"><day>21</day><month>11</month><year>2011</year></date><date date-type="accepted"><day>08</day><month>3</month><year>2012</year></date></history><permissions><copyright-statement>Copyright: © 2012 Fesharaki</copyright-statement><copyright-year>2012</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-sa/3.0"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p></license></permissions><abstract><sec id="st1"><title>Background:</title><p>This study performed to assess the safety of cataract extraction with phacoemulsification and intraocular lens (IOL) implantation in patients with high axial length compared with patients with normal axial length.</p></sec><sec id="st2"><title>Materials and Methods:</title><p>A total of 866 eyes were enrolled in this study; all subjects underwent phacoemulsification and IOL implantation for treatment of cataract. Seven hundred and nine eyes fell in the normal group with axial lengths ranging between 21 and 24.5 mm, and 157 eyes were considered myopic with axial length equal or greater than 26 mm. The two groups were compared regarding intraoperative surgical complications, such as vitreous loss, posterior capsular rupture, nucleolus drop, and undesirable implantation of IOL in the anterior chamber.</p></sec><sec id="st3"><title>Results:</title><p>Age was a risk factor in both groups, with each year increase of age, the chance of incidence of intraoperative complications increased 1.04-folds (<italic>P</italic> = 0.03). And with 1 mm increase in axial length, the incidence of complications raised 1.22-folds (<italic>P</italic> = 0.007). There was no significant correlation between axial length and incidence of vitreous loss, although the incidence of posterior capsular rupture and nucleus fragment drops increased with increment in the axial length. Sex of the patients and side of the left or right eye were not found to be significant risk factors.</p></sec><sec id="st4"><title>Conclusions:</title><p>As the results illustrate, in this survey, age and high axial length were statistically significant risk factors for incidence of intraoperative complications of cataract surgery with phacoemulsification technique. Anticipation of these complications and also preparation and prophylactic measures may decrease incidence of these complications.</p></sec></abstract><kwd-group><kwd>Age</kwd><kwd>axial length</kwd><kwd>cataract</kwd><kwd>myopia</kwd><kwd>phacoemulsification</kwd></kwd-group></article-meta></front><body><sec id="sec1-1"><title>INTRODUCTION</title><p>Cataract is the leading cause of blindness and low vision.[<xref ref-type="bibr" rid="ref1">1</xref>–<xref ref-type="bibr" rid="ref4">4</xref>] As the world population ages, cataract-induced visual dysfunction and blindness will be on the rise.[<xref ref-type="bibr" rid="ref5">5</xref>] The expectations of cataract patients have risen with introduction of innovative tools and technical improvement in surgical methods. Most surgeries end with excellent results, and patients as well as the surgeon are intolerant of occasional complications. Surgical management of cataract in patients with high myopia is associated with special difficulties,[<xref ref-type="bibr" rid="ref6">6</xref><xref ref-type="bibr" rid="ref7">7</xref>] provision for the potential complications may improve the outcome.</p><p>Cataract surgery and implantation of an intraocular lens (IOL) is an especially efficient refractive procedure in high myopia. With adequate expertise and proper implantation of IOL with correct power patients will enjoy an improved vision. This is not achievable in the majority of patients by most of the other refractive modalities, such as glasses, contact lenses, and corneal refractive procedures. Some intraoperative complications may raze this benefit; it may be impossible or very difficult to implant a posterior chamber IOL into the bag in a problematic surgery. Implantation of IOL out of capsular bag will also produce additional potential for a problematic course. Erroneously implanted IOLs will not provide the anticipated result.</p><p>Introduction of Kelman phacoemulsification technique revolutionized cataract surgery.[<xref ref-type="bibr" rid="ref8">8</xref>–<xref ref-type="bibr" rid="ref11">11</xref>] Despite difficulty of learning, a new method and complexity of the procedure, having a small incision sutureless surgery using a foldable IOL, is fascinating enough to turn it into the prevailing technique of cataract extraction. Decreased surgically induced astigmatism, quicker postoperative recovery, reduced postoperative followup visits, and less inflammation after surgery are among the advantages of this technique.[<xref ref-type="bibr" rid="ref12">12</xref>–<xref ref-type="bibr" rid="ref16">16</xref>] However, there are some drawbacks for the procedure that dramatically change the outcome: Management of vitreous loss and dropped nucleus during phacoemulsification need a well-rehearsed plan.[<xref ref-type="bibr" rid="ref17">17</xref><xref ref-type="bibr" rid="ref18">18</xref>] Surgeon's experience, early recognition of potential complications, and optimal handling of events lead to better outcomes.[<xref ref-type="bibr" rid="ref19">19</xref><xref ref-type="bibr" rid="ref20">20</xref>]</p><p>In this work, we designed a comparative study to evaluate the intraoperative complications of phacoemulsification with intraocular lens implantation in eyes with high and normal axial length.</p></sec><sec sec-type="materials|methods" id="sec1-2"><title>MATERIALS AND METHODS</title><p>In this study, a retrospective review was performed on 866 consecutive eyes that had undergone cataract surgery in a university hospital. We used patients’ records to collect data. Subjects had undergone biometry, including axial length measurement for intraocular lens calculation. Axial length measurement had been accomplished with the ultrasound contact biometry (Nidek Echoscan US-1800, Nidek Inc); the automatic phakic mode was used with ultrasound speed of 1532 m/s for the anterior chamber and vitreous and 1641 m/s for the lens. A Javal-style manual Keratometer (HAAG-STREIT, USA) was used to obtain corneal keratometry, and IOL powers were calculated by the SRK/T formula.</p><p>All subjects underwent cataract extraction using phacoemulsification method; a 3.2-mm clear corneal incision was made by means of disposable blades just anterior to the vascular arcades for entrance of the phaco tip. Routinely hydroxypropylmethylcellulose (HPMC) viscoelastic, Coatel, were used before a circular capsulorrhexis. The phacoemulsification surgery was finished with ventury-type Phacoemulsification machine (Bausch and Lomb Storz Phaco machine). Subsequently a foldable IOL was implanted with injector through the 3.2-mm incision. We generally did not use any sutures for wound closure.</p><p>Patients were divided into 2 groups according to their ocular axial length measured in preoperative biometry. The normal axial length group presumed to be patients with axial length ranged between 21 and 24.5 mm, and those that had axial length ≥26 mm were considered to be the myopic group. In this study, 709 eyes fell in the normal group and 157 eyes in the high axial length group. The 2 groups were compared regarding intraoperative surgical complications. The evaluated complications were vitreous loss, posterior capsular rupture, nucleolus drop, and displacement of IOL into the anterior chamber. In the case of tear in posterior capsule without vitreous prolapse “<italic>posterior capsular rupture</italic>” event was recorded, and for posterior capsular tear with vitreous prolapse in anterior chamber the event was named “<italic>vitreous loss</italic>.”</p></sec><sec sec-type="results" id="sec1-3"><title>RESULTS</title><p>Mean axial length in the normal group was 22.95 ± 0.83 mm (mean ± standard deviation) and mean age was 68.45 ± 9.75 years. In the high axial length group mean axial length was 27.83 ±1.82 mm and mean age was 64.33 ± 9.35 years.</p><p>Eighteen cases in the normal axial group (2.5%) had posterior capsular rupture compared with 9 cases (5.7%) in the high axial length group. Sixteen cases (2.3%) in the normal group had vitreous loss versus 7 cases (4.5%) in the high axial length group.</p><p>In this study, 4 cases in the normal group (0.6%) had displacement of the intraocular lens into the anterior chamber after surgery (Iris-captured IOL, or displacement of at least 1 haptic to anterior chamber), versus 3 cases (1.9%) in the high axial length group. There were 2 (0.3%) nucleus drop cases in the normal group and we had no such complication in the high axial length group [<xref ref-type="table" rid="T1">Table 1</xref>].</p><table-wrap id="T1" position="float"><label>Table 1</label><caption><p>Comparison between interaoperative complications of phacoemulcification cataract surgery in two groups with normal and high axial length</p></caption><graphic xlink:href="ABR-1-67-g001"></graphic></table-wrap><p>Age was a risk factor for incidence of intraoperative complications in either normal or high axial length groups. Every 1 year increase in the age of patients increased incidence of intraoperative complications by 1.04-folds (<italic>P</italic> = 0.03). <xref ref-type="fig" rid="F1">Figure 1</xref> demonstrates the rate of intraoperative complications in different age groups.</p><fig id="F1" position="float"><label>Figure 1</label><caption><p>Intraoperative complication rate (%) in different age groups</p></caption><graphic xlink:href="ABR-1-67-g002"></graphic></fig><p>Another risk factor for overall intraoperative complications in our study was the axial length itself. With 1 mm increase in axial length the incidence of intraoperative complications raised 1.22-folds (<italic>P</italic> = 0.007) [<xref ref-type="fig" rid="F2">Figure 2</xref>].</p><fig id="F2" position="float"><label>Figure 2</label><caption><p>Posterior capsular tear (%) with different axial lengths</p></caption><graphic xlink:href="ABR-1-67-g003"></graphic></fig></sec><sec sec-type="conclusion" id="sec1-4"><title>CONCLUSION</title><p>There was no significant correlation between axial length and incidence of vitreous loss, although incidence of posterior capsular rupture and nucleus fragment drops increased with increment in axial length. Sex of the patients and side of the left or right eye were not significant risk factors.</p></sec><sec sec-type="discussion" id="sec1-5"><title>DISCUSSION</title><p>According to the results, the treatment of cataract in high-myopic patients using the phacoemulsification technique is safe in most patients, although there are additional difficulties in the management of the surgery to a safe endpoint due to special conditions of ocular response during the surgical process in high axial length eyes.</p><p>As illustrated, in this survey, we found 2 significant risk factors contributing to the intraoperative complications. Age of the patient significantly correlated to the occurrence of complications during phacoemulsification in normal or high-myopic eyes. Higher axial length of the eye is another predicting factor for intraoperative complications of cataract surgery with phacoemulsification technique.</p><p>We speculate that age-related changes in vitreous structure may be responsible for more motility of posterior capsule during phacoemulsification surgery that puts older patients in danger of capsular rupture. Higher axial length also alters the physical properties of vitreous body, and enhanced movement of capsule.</p><p>In conclusion, provisional measures should be taken more seriously in the patients with risk factors for complications in the cataract surgery, that is, patients with older age and higher axial length. Providing further preparation and prophylactic measures may decrease the rate of complications.</p></sec><sec sec-type="conclusion" id="sec1-6"><title>CONCLUSION</title><p>In conclusion, provisional measures should be taken more seriously in the patients with risk factors for complications in the cataract surgery, that is, patients with older age and higher axial length. 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Alireza" sort="Ashtari, Alireza" uniqKey="Ashtari A" first="Alireza" last="Ashtari">Alireza Ashtari</name><name sortKey="Peyman, Alireza" sort="Peyman, Alireza" uniqKey="Peyman A" first="Alireza" last="Peyman">Alireza Peyman</name><name sortKey="Rowshandel, Mehdi" sort="Rowshandel, Mehdi" uniqKey="Rowshandel M" first="Mehdi" last="Rowshandel">Mehdi Rowshandel</name></country><country name="Malaisie"><noRegion><name sortKey="Peyman, Mohammadreza" sort="Peyman, Mohammadreza" uniqKey="Peyman M" first="Mohammadreza" last="Peyman">Mohammadreza Peyman</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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