Effect of axial length and anterior chamber depth on the peripheral refraction profile
AIM: To evaluate the effect of axial length (AL) and anterior chamber depth (ACD) on peripheral refractive profile in myopic patients compared to emmetropic participants. METHODS: This cross-sectional study was conducted in right eyes of 58 participants of whom 38 were emmetropic and 20 were myopic....
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2021-02-01
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| Series: | International Journal of Ophthalmology |
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| Online Access: | http://ies.ijo.cn/en_publish/2021/2/20210217.pdf |
| _version_ | 1818580518399115264 |
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| author | Masoud Khorrami-Nejad Raha Moradi Alireza Akbarzadeh Baghban Bahram Khosravi |
| author_facet | Masoud Khorrami-Nejad Raha Moradi Alireza Akbarzadeh Baghban Bahram Khosravi |
| author_sort | Masoud Khorrami-Nejad |
| collection | DOAJ |
| description | AIM: To evaluate the effect of axial length (AL) and anterior chamber depth (ACD) on peripheral refractive profile in myopic patients compared to emmetropic participants. METHODS: This cross-sectional study was conducted in right eyes of 58 participants of whom 38 were emmetropic and 20 were myopic. Central and peripheral refraction were measured at 10°, 20°, and 30° eccentricities in nasal and temporal fields using an open-field autorefractor. The Lenstar LS900 was used to measure ACD and AL. The participants were divided into three groups of short (<22.5 mm), normal (22.5-24.5 mm), and long eye (>24.5 mm) according to AL and three groups of low ACD (<3.00 mm), normal ACD (3.00-3.60 mm), and high ACD (>3.60 mm) according to ACD. RESULTS: The mean age of the participants was 22.26±3.09y (range 18-30y). The peripheral mean spherical refractive error showed a hypermetropic shift in myopic and emmetropic groups although this shift was more pronounced in the myopic group. The results showed significant changes in the spherical equivalent, J0, and J45 astigmatism in all gazes with an increase in eccentricity (P<0.001). The pattern of refractive error changes was more noticeable in long and short eyes versus normal AL eyes. Moreover, the pattern of peripheral refractive changes was much more prominent in the high ACD group versus the normal ACD group and in the normal ACD group versus the low ACD group. CONCLUSION: Peripheral refraction changes are greater in participants with AL values outside the normal range and deeper ACD values compared to participants with normal AL and ACD. |
| first_indexed | 2024-12-16T07:18:52Z |
| format | Article |
| id | doaj.art-d8f9117e53e54e4ea399eefd18ef0d98 |
| institution | Directory Open Access Journal |
| issn | 2222-3959 2227-4898 |
| language | English |
| last_indexed | 2024-12-16T07:18:52Z |
| publishDate | 2021-02-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | International Journal of Ophthalmology |
| spelling | doaj.art-d8f9117e53e54e4ea399eefd18ef0d982022-12-21T22:39:42ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982021-02-0114229229810.18240/ijo.2021.02.1720210217Effect of axial length and anterior chamber depth on the peripheral refraction profileMasoud Khorrami-Nejad0Raha Moradi1Alireza Akbarzadeh Baghban2Bahram Khosravi3Raha Moradi. Damavand St., School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran 1616913111, Iran. rmoradiopto@yahoo.comSchool of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran 1616913111, IranProteomics Research Center, Department of Biostatistics, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran 1971653313, IranSchool of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran 1616913111, IranAIM: To evaluate the effect of axial length (AL) and anterior chamber depth (ACD) on peripheral refractive profile in myopic patients compared to emmetropic participants. METHODS: This cross-sectional study was conducted in right eyes of 58 participants of whom 38 were emmetropic and 20 were myopic. Central and peripheral refraction were measured at 10°, 20°, and 30° eccentricities in nasal and temporal fields using an open-field autorefractor. The Lenstar LS900 was used to measure ACD and AL. The participants were divided into three groups of short (<22.5 mm), normal (22.5-24.5 mm), and long eye (>24.5 mm) according to AL and three groups of low ACD (<3.00 mm), normal ACD (3.00-3.60 mm), and high ACD (>3.60 mm) according to ACD. RESULTS: The mean age of the participants was 22.26±3.09y (range 18-30y). The peripheral mean spherical refractive error showed a hypermetropic shift in myopic and emmetropic groups although this shift was more pronounced in the myopic group. The results showed significant changes in the spherical equivalent, J0, and J45 astigmatism in all gazes with an increase in eccentricity (P<0.001). The pattern of refractive error changes was more noticeable in long and short eyes versus normal AL eyes. Moreover, the pattern of peripheral refractive changes was much more prominent in the high ACD group versus the normal ACD group and in the normal ACD group versus the low ACD group. CONCLUSION: Peripheral refraction changes are greater in participants with AL values outside the normal range and deeper ACD values compared to participants with normal AL and ACD.http://ies.ijo.cn/en_publish/2021/2/20210217.pdfanterior chamber depthaxial lengthperipheral refraction |
| spellingShingle | Masoud Khorrami-Nejad Raha Moradi Alireza Akbarzadeh Baghban Bahram Khosravi Effect of axial length and anterior chamber depth on the peripheral refraction profile International Journal of Ophthalmology anterior chamber depth axial length peripheral refraction |
| title | Effect of axial length and anterior chamber depth on the peripheral refraction profile |
| title_full | Effect of axial length and anterior chamber depth on the peripheral refraction profile |
| title_fullStr | Effect of axial length and anterior chamber depth on the peripheral refraction profile |
| title_full_unstemmed | Effect of axial length and anterior chamber depth on the peripheral refraction profile |
| title_short | Effect of axial length and anterior chamber depth on the peripheral refraction profile |
| title_sort | effect of axial length and anterior chamber depth on the peripheral refraction profile |
| topic | anterior chamber depth axial length peripheral refraction |
| url | http://ies.ijo.cn/en_publish/2021/2/20210217.pdf |
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