Peripheral refraction with dominant design multifocal contact lenses in young myopes
Purpose: The purpose of this study was to show the potential of a commercial center-distance multifocal soft contact lens to induce relative peripheral myopic defocus in myopic eyes. Methods: Twenty-eight myopic right eyes from 28 patients (mean age: 22.0 ± 2.0 years) were evaluated. The measurement...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2013-04-01
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| Series: | Journal of Optometry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1888429613000022 |
| _version_ | 1819132997082808320 |
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| author | Daniela Lopes-Ferreira Cláudia Ribeiro Helena Neves Miguel Faria-Ribeiro António Queirós César Villa-Collar Jorge Jorge José Manuel González-Méijome |
| author_facet | Daniela Lopes-Ferreira Cláudia Ribeiro Helena Neves Miguel Faria-Ribeiro António Queirós César Villa-Collar Jorge Jorge José Manuel González-Méijome |
| author_sort | Daniela Lopes-Ferreira |
| collection | DOAJ |
| description | Purpose: The purpose of this study was to show the potential of a commercial center-distance multifocal soft contact lens to induce relative peripheral myopic defocus in myopic eyes.
Methods: Twenty-eight myopic right eyes from 28 patients (mean age: 22.0 ± 2.0 years) were evaluated. The measurements of axial and off-axis refraction were made using a Grand-Seiko WAM-5500 open-field autorefractometer without lens and with multifocal contact lenses (Proclear Multifocal D® Design) of +2.00 D and +3.00 D add power applied randomly. Central mean spherical equivalent refraction was −2.24 ± 1.33 D. Ocular refraction was measured at center and at eccentricities between 35° nasal and 35° temporal (in 5° steps).
Results: Baseline relative peripheral refractive error (RPRE) as spherical equivalent (M) was −0.69 ± 1.14 D and −0.46 ± 1.38 D at 35° in the nasal and temporal degrees of visual field, respectively. Both add powers increased the relative peripheral myopic defocus up to −0.82 ± 1.23 D (p = 0.002) and −1.42 ± 1.45 D (p < 0.001) at 35° in the nasal field; and −0.87 ± 1.42 D (p = 0.003) and −2.00 ± 1.48 D (p < 0.001) at 35° in the temporal retina with +2.00 D and +3.00 D add lenses, respectively. Differences between +2.00 and +3.00 D add lenses were statistically significant beyond 20° in the nasal visual field and 10° in the temporal visual field.
Conclusion: It is possible to induce significant changes in the pattern of relative peripheral refraction in the myopic direction with commercially available dominant design multifocal contact lenses. The higher add (+3.00 D) induced an significantly higher effect than the +2.00 D add lens, although an increase of 1 D in add power does not correspond to the same amount of increase in RPRE. |
| first_indexed | 2024-12-22T09:40:17Z |
| format | Article |
| id | doaj.art-0b37b42c47c8499eaa27ee5b1f17ca25 |
| institution | Directory Open Access Journal |
| issn | 1888-4296 |
| language | English |
| last_indexed | 2024-12-22T09:40:17Z |
| publishDate | 2013-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Optometry |
| spelling | doaj.art-0b37b42c47c8499eaa27ee5b1f17ca252022-12-21T18:30:43ZengElsevierJournal of Optometry1888-42962013-04-0162859410.1016/j.optom.2013.01.001Peripheral refraction with dominant design multifocal contact lenses in young myopesDaniela Lopes-Ferreira0Cláudia Ribeiro1Helena Neves2Miguel Faria-Ribeiro3António Queirós4César Villa-Collar5Jorge Jorge6José Manuel González-Méijome7Clinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalClinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalClinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalClinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalClinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalDepartamento de Óptica y Optometria. Universidad Europea de Madrid, Madrid, SpainClinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalClinical & Experimental Optometry Research Lab, Center of Physics, University of Minho, Braga, PortugalPurpose: The purpose of this study was to show the potential of a commercial center-distance multifocal soft contact lens to induce relative peripheral myopic defocus in myopic eyes. Methods: Twenty-eight myopic right eyes from 28 patients (mean age: 22.0 ± 2.0 years) were evaluated. The measurements of axial and off-axis refraction were made using a Grand-Seiko WAM-5500 open-field autorefractometer without lens and with multifocal contact lenses (Proclear Multifocal D® Design) of +2.00 D and +3.00 D add power applied randomly. Central mean spherical equivalent refraction was −2.24 ± 1.33 D. Ocular refraction was measured at center and at eccentricities between 35° nasal and 35° temporal (in 5° steps). Results: Baseline relative peripheral refractive error (RPRE) as spherical equivalent (M) was −0.69 ± 1.14 D and −0.46 ± 1.38 D at 35° in the nasal and temporal degrees of visual field, respectively. Both add powers increased the relative peripheral myopic defocus up to −0.82 ± 1.23 D (p = 0.002) and −1.42 ± 1.45 D (p < 0.001) at 35° in the nasal field; and −0.87 ± 1.42 D (p = 0.003) and −2.00 ± 1.48 D (p < 0.001) at 35° in the temporal retina with +2.00 D and +3.00 D add lenses, respectively. Differences between +2.00 and +3.00 D add lenses were statistically significant beyond 20° in the nasal visual field and 10° in the temporal visual field. Conclusion: It is possible to induce significant changes in the pattern of relative peripheral refraction in the myopic direction with commercially available dominant design multifocal contact lenses. The higher add (+3.00 D) induced an significantly higher effect than the +2.00 D add lens, although an increase of 1 D in add power does not correspond to the same amount of increase in RPRE.http://www.sciencedirect.com/science/article/pii/S1888429613000022Peripheral refractionMultifocal contact lensesMyopization |
| spellingShingle | Daniela Lopes-Ferreira Cláudia Ribeiro Helena Neves Miguel Faria-Ribeiro António Queirós César Villa-Collar Jorge Jorge José Manuel González-Méijome Peripheral refraction with dominant design multifocal contact lenses in young myopes Journal of Optometry Peripheral refraction Multifocal contact lenses Myopization |
| title | Peripheral refraction with dominant design multifocal contact lenses in young myopes |
| title_full | Peripheral refraction with dominant design multifocal contact lenses in young myopes |
| title_fullStr | Peripheral refraction with dominant design multifocal contact lenses in young myopes |
| title_full_unstemmed | Peripheral refraction with dominant design multifocal contact lenses in young myopes |
| title_short | Peripheral refraction with dominant design multifocal contact lenses in young myopes |
| title_sort | peripheral refraction with dominant design multifocal contact lenses in young myopes |
| topic | Peripheral refraction Multifocal contact lenses Myopization |
| url | http://www.sciencedirect.com/science/article/pii/S1888429613000022 |
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