The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes

Purpose. To evaluate the effect of the optical zone diameter (OZ) in orthokeratology contact lenses regarding the topographical profile in patients with high myopia (−4.00 D to −7.00 D) and to study its effect over the visual quality. Materials and Methods. Twelve patients (18 eyes) were fitted with...

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Autores: Carracedo Rodríguez, Juan Gonzalo, Espinosa Vidal, Teresa M., Martínez Alberquilla, Irene, Batres Valderas, Laura
Tipo de documento: artigo
Data de publicação:2019
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/13115
Acesso em linha:https://hdl.handle.net/20.500.14352/13115
Access Level:Acceso aberto
Palavra-chave:617.7-089.243
617.713-089
617.753.2
Orthokeratology
Contact lenses
High myopia
Lentes de contacto
Optometría
Óptica oftálmica
3311.11 Instrumentos ópticos
2209.15 Optometría
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oai_identifier_str oai:docta.ucm.es:20.500.14352/13115
network_acronym_str ES
network_name_str España
repository_id_str
spelling The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High MyopesCarracedo Rodríguez, Juan GonzaloEspinosa Vidal, Teresa M.Martínez Alberquilla, IreneBatres Valderas, Laura617.7-089.243617.713-089617.753.2OrthokeratologyContact lensesHigh myopiaLentes de contactoOptometríaÓptica oftálmica3311.11 Instrumentos ópticos2209.15 OptometríaPurpose. To evaluate the effect of the optical zone diameter (OZ) in orthokeratology contact lenses regarding the topographical profile in patients with high myopia (−4.00 D to −7.00 D) and to study its effect over the visual quality. Materials and Methods. Twelve patients (18 eyes) were fitted with overnight orthokeratology (OrthoK) with a randomized 6 mm or 5 mm OZ lens worn for 2 weeks, followed by a 2-week washout period, between both designs. Keratometry (K) readings, optical zone treatment diameter (OZT), peripheral ring width (PRW), higher-order aberrations (HOA), high (HC) and low contrast (LC) visual acuity, and subjective vision and comfort were measured at baseline and after 2 weeks of OrthoK lens wear of each contact lens. Results. No significant differences were found between any measurements for the same subject at both baselines ( value > 0.05). There was no difference between OZ lens designs found in refraction, subjective vision or comfort, and HC and LC visual acuity. Contrast sensitivity was decreased in the 5 mm OZ lens design compared with 6 mm OZ design (-value < 0.05). 5 mm OZ design provoked a greater flattening, more powerful midperipheral ring and 4th-order corneal and total spherical aberration than the 6 mm OZ design, being statistically significant after 7 days, for corneal aberration, and 15 days, for corneal and total, of wearing the lens (-value < 0.05). The OZT obtained were 2.8 ± 0.2 mm and 3.1 ± 0.1 mm for 5 mm and 6 mm OZ design, respectively (-value < 0.05). Regarding PRW, the 5 mm OZ design had a wider ring width in both the nasal and temporal zones (-value < 0.05). Conclusions. A smaller diameter optical zone (5 mm) in orthokeratology lenses produces a smaller treatment area and a larger and more powerful midperipheral ring, increasing the 4th-order spherical aberration that affects only the contrast sensitivity but without differences in visual acuity and subjective vision compared with a larger OZ diameter (6 mm).HindawiUniversidad Complutense de Madrid20192019-01-0220192019-01-02journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/13115reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/131152026-06-02T12:44:21Z
dc.title.none.fl_str_mv The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
title The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
spellingShingle The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
Carracedo Rodríguez, Juan Gonzalo
617.7-089.243
617.713-089
617.753.2
Orthokeratology
Contact lenses
High myopia
Lentes de contacto
Optometría
Óptica oftálmica
3311.11 Instrumentos ópticos
2209.15 Optometría
title_short The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
title_full The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
title_fullStr The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
title_full_unstemmed The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
title_sort The Topographical Effect of Optical Zone Diameter in Orthokeratology Contact Lenses in High Myopes
dc.creator.none.fl_str_mv Carracedo Rodríguez, Juan Gonzalo
Espinosa Vidal, Teresa M.
Martínez Alberquilla, Irene
Batres Valderas, Laura
author Carracedo Rodríguez, Juan Gonzalo
author_facet Carracedo Rodríguez, Juan Gonzalo
Espinosa Vidal, Teresa M.
Martínez Alberquilla, Irene
Batres Valderas, Laura
author_role author
author2 Espinosa Vidal, Teresa M.
Martínez Alberquilla, Irene
Batres Valderas, Laura
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 617.7-089.243
617.713-089
617.753.2
Orthokeratology
Contact lenses
High myopia
Lentes de contacto
Optometría
Óptica oftálmica
3311.11 Instrumentos ópticos
2209.15 Optometría
topic 617.7-089.243
617.713-089
617.753.2
Orthokeratology
Contact lenses
High myopia
Lentes de contacto
Optometría
Óptica oftálmica
3311.11 Instrumentos ópticos
2209.15 Optometría
description Purpose. To evaluate the effect of the optical zone diameter (OZ) in orthokeratology contact lenses regarding the topographical profile in patients with high myopia (−4.00 D to −7.00 D) and to study its effect over the visual quality. Materials and Methods. Twelve patients (18 eyes) were fitted with overnight orthokeratology (OrthoK) with a randomized 6 mm or 5 mm OZ lens worn for 2 weeks, followed by a 2-week washout period, between both designs. Keratometry (K) readings, optical zone treatment diameter (OZT), peripheral ring width (PRW), higher-order aberrations (HOA), high (HC) and low contrast (LC) visual acuity, and subjective vision and comfort were measured at baseline and after 2 weeks of OrthoK lens wear of each contact lens. Results. No significant differences were found between any measurements for the same subject at both baselines ( value > 0.05). There was no difference between OZ lens designs found in refraction, subjective vision or comfort, and HC and LC visual acuity. Contrast sensitivity was decreased in the 5 mm OZ lens design compared with 6 mm OZ design (-value < 0.05). 5 mm OZ design provoked a greater flattening, more powerful midperipheral ring and 4th-order corneal and total spherical aberration than the 6 mm OZ design, being statistically significant after 7 days, for corneal aberration, and 15 days, for corneal and total, of wearing the lens (-value < 0.05). The OZT obtained were 2.8 ± 0.2 mm and 3.1 ± 0.1 mm for 5 mm and 6 mm OZ design, respectively (-value < 0.05). Regarding PRW, the 5 mm OZ design had a wider ring width in both the nasal and temporal zones (-value < 0.05). Conclusions. A smaller diameter optical zone (5 mm) in orthokeratology lenses produces a smaller treatment area and a larger and more powerful midperipheral ring, increasing the 4th-order spherical aberration that affects only the contrast sensitivity but without differences in visual acuity and subjective vision compared with a larger OZ diameter (6 mm).
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-02
2019
2019-01-02
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/13115
url https://hdl.handle.net/20.500.14352/13115
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Hindawi
publisher.none.fl_str_mv Hindawi
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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