Publicação
Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery
| Resumo: | ABSTRACT Purpose: To investigate the relationship between biomechanical properties of the cornea and postoperative refractive changes in patients with low-level astigmatism after cataract surgery. Methods: This prospective study recruited patients undergoing cataract surgery involving 2.8-mm superior incisions. Biomechanical properties of the cornea were evaluated preoperatively using the Ocular Response Analyzer, and corneal profiles were evaluated using a Scheimpflug system (Pentacam HR). Topographic astigmatism, total corneal aberrations (TCA) and higher-order corneal aberrations (HOCA) analyses were performed preoperatively and during 1- and 3-month postoperative exams. The incidences of surgically-induced astigmatism (SIA) and HOCAs were calculated using vector analyses. Associations of the preoperative biomechanical properties of the cornea with SIA and HOCAs were evaluated. Results: This study included 28 eyes of 28 patients. The preoperative corneal hysteresis (CH) was 8.68 ± 1.86 mmHg, and the corneal resistance factor (CRF) was 8.66 ± 1.61 mmHg. At the 1-month postoperative evaluation, significant changes were observed in HOCAs (p=0.023), TCAs (p=0.05), astigmatism (p=0.02), and trefoil (p=0.033); in contrast, differences in coma (p=0.386) and spherical aberration (SA) were not significant (p=0.947). At the 3-month visit, significant changes were only observed in TCAs (p=0.02) and HOCAs (p=0.012). No relationships between the preoperative corneal hysteresis and corneal resistance factor and postoperative SIA and HOCA were identified, other than a positive correlation between the 3-month postoperative incidence of corneal hysteresis and spherical aberration. Conclusions: Despite the observed lack of relationships of preoperative biomechanical properties of the cornea with SIA and postoperative aberrations (except for SA), further studies involving larger patient groups are needed to explore the unexpected refractive deviations after cataract surgery. |
|---|---|
| Autores principais: | Koç,Mustafa |
| Outros Autores: | İlhan,Çağrı; Koban,Yaran; Özülken,Kemal; Durukan,İrfan; Yılmazbaş,Pelin |
| Assunto: | Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| Ano: | 2016 |
| País: | Brasil |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | inglês |
| Origem: | Oasisbr |
| _version_ | 1871509952710836224 |
|---|---|
| author | Koç,Mustafa |
| author2 | İlhan,Çağrı Koban,Yaran Özülken,Kemal Durukan,İrfan Yılmazbaş,Pelin |
| author2_role | author author author author author |
| author_facet | Koç,Mustafa İlhan,Çağrı Koban,Yaran Özülken,Kemal Durukan,İrfan Yılmazbaş,Pelin |
| author_role | author |
| country_str | BR |
| creators_json_txt | [{\"Person.name\":\"Koç,Mustafa\"},{\"Person.name\":\"İlhan,Çağrı\"},{\"Person.name\":\"Koban,Yaran\"},{\"Person.name\":\"Özülken,Kemal\"},{\"Person.name\":\"Durukan,İrfan\"},{\"Person.name\":\"Yılmazbaş,Pelin\"}] |
| datacite.creators.creator.creatorName.fl_str_mv | Koç,Mustafa İlhan,Çağrı Koban,Yaran Özülken,Kemal Durukan,İrfan Yılmazbaş,Pelin |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| datacite.titles.title.fl_str_mv | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| dc.creator.none.fl_str_mv | Koç,Mustafa İlhan,Çağrı Koban,Yaran Özülken,Kemal Durukan,İrfan Yılmazbaş,Pelin |
| dc.format.none.fl_str_mv | text/html |
| dc.identifier.none.fl_str_mv | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492016000600380 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Conselho Brasileiro de Oftalmologia |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.source.none.fl_str_mv | Arquivos Brasileiros de Oftalmologia v.79 n.6 2016 reponame:Arquivos brasileiros de oftalmologia (Online) instname:Conselho Brasileiro de Oftalmologia (CBO) instacron:CBO |
| dc.subject.none.fl_str_mv | Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| dc.title.fl_str_mv | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | ABSTRACT Purpose: To investigate the relationship between biomechanical properties of the cornea and postoperative refractive changes in patients with low-level astigmatism after cataract surgery. Methods: This prospective study recruited patients undergoing cataract surgery involving 2.8-mm superior incisions. Biomechanical properties of the cornea were evaluated preoperatively using the Ocular Response Analyzer, and corneal profiles were evaluated using a Scheimpflug system (Pentacam HR). Topographic astigmatism, total corneal aberrations (TCA) and higher-order corneal aberrations (HOCA) analyses were performed preoperatively and during 1- and 3-month postoperative exams. The incidences of surgically-induced astigmatism (SIA) and HOCAs were calculated using vector analyses. Associations of the preoperative biomechanical properties of the cornea with SIA and HOCAs were evaluated. Results: This study included 28 eyes of 28 patients. The preoperative corneal hysteresis (CH) was 8.68 ± 1.86 mmHg, and the corneal resistance factor (CRF) was 8.66 ± 1.61 mmHg. At the 1-month postoperative evaluation, significant changes were observed in HOCAs (p=0.023), TCAs (p=0.05), astigmatism (p=0.02), and trefoil (p=0.033); in contrast, differences in coma (p=0.386) and spherical aberration (SA) were not significant (p=0.947). At the 3-month visit, significant changes were only observed in TCAs (p=0.02) and HOCAs (p=0.012). No relationships between the preoperative corneal hysteresis and corneal resistance factor and postoperative SIA and HOCA were identified, other than a positive correlation between the 3-month postoperative incidence of corneal hysteresis and spherical aberration. Conclusions: Despite the observed lack of relationships of preoperative biomechanical properties of the cornea with SIA and postoperative aberrations (except for SA), further studies involving larger patient groups are needed to explore the unexpected refractive deviations after cataract surgery. |
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| identifier.url.fl_str_mv | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492016000600380 |
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| person_str_mv | Koç,Mustafa İlhan,Çağrı Koban,Yaran Özülken,Kemal Durukan,İrfan Yılmazbaş,Pelin |
| publishDate | 2016 |
| publisher.none.fl_str_mv | Conselho Brasileiro de Oftalmologia |
| repo_facet_str | urn:repositoryAcronym:oasisbr{{{_:::_}}}Oasisbr |
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| spelling | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgeryKoç,Mustafaİlhan,ÇağrıKoban,YaranÖzülken,KemalDurukan,İrfanYılmazbaş,PelinCornea/surgeryCornea/physiopathologyCataract extractionLens implantation, intraocularBiomechanical phenomena/physiologyCorneal wavefront aberration/physiopathologyAstigmatism/etiologyopen accesshttp://purl.org/coar/access_right/c_abf2http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492016000600380URLhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492016000600380URLHasVersion2016-12-01ABSTRACT Purpose: To investigate the relationship between biomechanical properties of the cornea and postoperative refractive changes in patients with low-level astigmatism after cataract surgery. Methods: This prospective study recruited patients undergoing cataract surgery involving 2.8-mm superior incisions. Biomechanical properties of the cornea were evaluated preoperatively using the Ocular Response Analyzer, and corneal profiles were evaluated using a Scheimpflug system (Pentacam HR). Topographic astigmatism, total corneal aberrations (TCA) and higher-order corneal aberrations (HOCA) analyses were performed preoperatively and during 1- and 3-month postoperative exams. The incidences of surgically-induced astigmatism (SIA) and HOCAs were calculated using vector analyses. Associations of the preoperative biomechanical properties of the cornea with SIA and HOCAs were evaluated. Results: This study included 28 eyes of 28 patients. The preoperative corneal hysteresis (CH) was 8.68 ± 1.86 mmHg, and the corneal resistance factor (CRF) was 8.66 ± 1.61 mmHg. At the 1-month postoperative evaluation, significant changes were observed in HOCAs (p=0.023), TCAs (p=0.05), astigmatism (p=0.02), and trefoil (p=0.033); in contrast, differences in coma (p=0.386) and spherical aberration (SA) were not significant (p=0.947). At the 3-month visit, significant changes were only observed in TCAs (p=0.02) and HOCAs (p=0.012). No relationships between the preoperative corneal hysteresis and corneal resistance factor and postoperative SIA and HOCA were identified, other than a positive correlation between the 3-month postoperative incidence of corneal hysteresis and spherical aberration. Conclusions: Despite the observed lack of relationships of preoperative biomechanical properties of the cornea with SIA and postoperative aberrations (except for SA), further studies involving larger patient groups are needed to explore the unexpected refractive deviations after cataract surgery.engtext/htmlConselho Brasileiro de OftalmologiaArquivos Brasileiros de Oftalmologia v.79 n.6 2016reponame:Arquivos brasileiros de oftalmologia (Online)instname:Conselho Brasileiro de Oftalmologia (CBO)instacron:CBOjournal articlehttp://purl.org/coar/resource_type/c_6501literatureVoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85 |
| spellingShingle | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery Koç,Mustafa Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| status | SINGLETON |
| status_str | VoR |
| subject.fl_str_mv | Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| title | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| title_full | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| title_fullStr | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| title_full_unstemmed | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| title_short | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| title_sort | Effect of corneal biomechanical properties on surgically-induced astigmatism and higher-order aberrations after cataract surgery |
| topic | Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| topic_facet | Cornea/surgery Cornea/physiopathology Cataract extraction Lens implantation, intraocular Biomechanical phenomena/physiology Corneal wavefront aberration/physiopathology Astigmatism/etiology |
| url | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492016000600380 |
| visible | 1 |
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