Publicação
Which soft contact lens power is better for piggyback fitting in keratoconus?
| Resumo: | PURPOSE: To evaluate the ipact of differente soft contact lens power in the anterior corneal curvature and regulareity in subjects with keratoconus. METHODS: Nineteen subjects (30 eyes) with keratoconus were included in the study. Six corneal topographies were taken with Pentacam Eye System over the naked eye and successively with soft lens (Senofilcon A) powers of -3.00, -1.50, 0.00, +1.50 and +3.00D. Corneal measurements of mean central keratometry (MCK), maximum tangential curvature (TK), maximum front elevation (MFE) and eccentricity (Ecc) at 6 and 8mm diameters as well as anterior corneal surface high order aberrations (i.e. total RMS, spherical- and coma-like and secondary astigmatism) were evaluated. RESULTS: Negative- and plano-powered soft lenses flattened (p<0.05 in all cases), whereas positive-powered lenses did not induce any significant changes (p>0.05 in all cases) in MCK in comparison to the naked eye. The TK power decreased with negative lenses (p<0.05 in both cases) and increased with +3.00D lenses (p=0.03) in comparison to the naked eye. No statistically significant differences were found in MFE with any soft lens power in comparison to the naked eye (p>0.05 in all cases). Corneal eccentricity increased at 8mm diameter for all lens powers (p<0.05 in all cases). No statistically differences were found in HOA RMS and spherical-like aberration (both p>0.05). Statistically differences were found in coma-like and secondary astigmatism (both p<0.05). CONCLUSION: Negative-powered soft contact lenses provide a flatter anterior surface in comparison to positive-powered lenses in subjects with keratoconus and thus they might be more suitable for piggyback contact lens fitting. |
|---|---|
| Autores principais: | Romero-Jimenez, Miguel |
| Outros Autores: | Santodomingo-Rubido, Jacinto; Flores-Rodriguez, Patricia; González-Méijome, José Manuel |
| Assunto: | Contact lens Keratoconus Piggyback Cornea |
| Ano: | 2013 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438668536348672 |
|---|---|
| author | Romero-Jimenez, Miguel |
| author2 | Santodomingo-Rubido, Jacinto Flores-Rodriguez, Patricia González-Méijome, José Manuel |
| author2_role | author author author |
| author_facet | Romero-Jimenez, Miguel Santodomingo-Rubido, Jacinto Flores-Rodriguez, Patricia González-Méijome, José Manuel |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Romero-Jimenez, Miguel\"},{\"Person.name\":\"Santodomingo-Rubido, Jacinto\"},{\"Person.name\":\"Flores-Rodriguez, Patricia\"},{\"Person.name\":\"González-Méijome, José Manuel\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Romero-Jimenez, Miguel Santodomingo-Rubido, Jacinto Flores-Rodriguez, Patricia González-Méijome, José Manuel |
| datacite.date.Accepted.fl_str_mv | 2013-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2012-11-07T11:37:14Z |
| datacite.date.embargoed.fl_str_mv | 2012-11-07T11:37:14Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Contact lens Keratoconus Piggyback Cornea |
| datacite.titles.title.fl_str_mv | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Romero-Jimenez, Miguel Santodomingo-Rubido, Jacinto Flores-Rodriguez, Patricia González-Méijome, José Manuel |
| dc.date.Accepted.fl_str_mv | 2013-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2012-11-07T11:37:14Z |
| dc.date.embargoed.fl_str_mv | 2012-11-07T11:37:14Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/20708 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Contact lens Keratoconus Piggyback Cornea |
| dc.title.fl_str_mv | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | PURPOSE: To evaluate the ipact of differente soft contact lens power in the anterior corneal curvature and regulareity in subjects with keratoconus. METHODS: Nineteen subjects (30 eyes) with keratoconus were included in the study. Six corneal topographies were taken with Pentacam Eye System over the naked eye and successively with soft lens (Senofilcon A) powers of -3.00, -1.50, 0.00, +1.50 and +3.00D. Corneal measurements of mean central keratometry (MCK), maximum tangential curvature (TK), maximum front elevation (MFE) and eccentricity (Ecc) at 6 and 8mm diameters as well as anterior corneal surface high order aberrations (i.e. total RMS, spherical- and coma-like and secondary astigmatism) were evaluated. RESULTS: Negative- and plano-powered soft lenses flattened (p<0.05 in all cases), whereas positive-powered lenses did not induce any significant changes (p>0.05 in all cases) in MCK in comparison to the naked eye. The TK power decreased with negative lenses (p<0.05 in both cases) and increased with +3.00D lenses (p=0.03) in comparison to the naked eye. No statistically significant differences were found in MFE with any soft lens power in comparison to the naked eye (p>0.05 in all cases). Corneal eccentricity increased at 8mm diameter for all lens powers (p<0.05 in all cases). No statistically differences were found in HOA RMS and spherical-like aberration (both p>0.05). Statistically differences were found in coma-like and secondary astigmatism (both p<0.05). CONCLUSION: Negative-powered soft contact lenses provide a flatter anterior surface in comparison to positive-powered lenses in subjects with keratoconus and thus they might be more suitable for piggyback contact lens fitting. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/d704ca7e-2f1f-4c95-ad29-327e5c61f4d7/download |
| id | rum_f13000cf5bbc93d293b2fc8f9fb2fd5c |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/20708 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/20708 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Romero-Jimenez, Miguel Santodomingo-Rubido, Jacinto Flores-Rodriguez, Patricia González-Méijome, José Manuel |
| publishDate | 2013 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engElsevierporPURPOSE: To evaluate the ipact of differente soft contact lens power in the anterior corneal curvature and regulareity in subjects with keratoconus. METHODS: Nineteen subjects (30 eyes) with keratoconus were included in the study. Six corneal topographies were taken with Pentacam Eye System over the naked eye and successively with soft lens (Senofilcon A) powers of -3.00, -1.50, 0.00, +1.50 and +3.00D. Corneal measurements of mean central keratometry (MCK), maximum tangential curvature (TK), maximum front elevation (MFE) and eccentricity (Ecc) at 6 and 8mm diameters as well as anterior corneal surface high order aberrations (i.e. total RMS, spherical- and coma-like and secondary astigmatism) were evaluated. RESULTS: Negative- and plano-powered soft lenses flattened (p<0.05 in all cases), whereas positive-powered lenses did not induce any significant changes (p>0.05 in all cases) in MCK in comparison to the naked eye. The TK power decreased with negative lenses (p<0.05 in both cases) and increased with +3.00D lenses (p=0.03) in comparison to the naked eye. No statistically significant differences were found in MFE with any soft lens power in comparison to the naked eye (p>0.05 in all cases). Corneal eccentricity increased at 8mm diameter for all lens powers (p<0.05 in all cases). No statistically differences were found in HOA RMS and spherical-like aberration (both p>0.05). Statistically differences were found in coma-like and secondary astigmatism (both p<0.05). CONCLUSION: Negative-powered soft contact lenses provide a flatter anterior surface in comparison to positive-powered lenses in subjects with keratoconus and thus they might be more suitable for piggyback contact lens fitting.application/pdfporWhich soft contact lens power is better for piggyback fitting in keratoconus?Romero-Jimenez, MiguelSantodomingo-Rubido, JacintoFlores-Rodriguez, PatriciaGonzález-Méijome, José ManuelHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptPMID23108009ISSNIsPartOf1367-0484DOIIsPartOf10.1016/j.clae.2012.10.0702012-11-07T11:37:14Z20132012-06-072013-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/20708http://purl.org/coar/access_right/c_abf2open accessContact lensKeratoconusPiggybackCornea320266 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/d704ca7e-2f1f-4c95-ad29-327e5c61f4d7/download |
| spellingShingle | Which soft contact lens power is better for piggyback fitting in keratoconus? Romero-Jimenez, Miguel Contact lens Keratoconus Piggyback Cornea |
| status | SINGLETON |
| subject.fl_str_mv | Contact lens Keratoconus Piggyback Cornea |
| title | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| title_full | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| title_fullStr | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| title_full_unstemmed | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| title_short | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| title_sort | Which soft contact lens power is better for piggyback fitting in keratoconus? |
| topic | Contact lens Keratoconus Piggyback Cornea |
| topic_facet | Contact lens Keratoconus Piggyback Cornea |
| url | https://hdl.handle.net/1822/20708 |
| visible | 1 |