Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria
AIM: To analyze the clinical application of calculated and gradient accommodative convergence/accommodation ratio(AC/A)in different eye positions.METHODS: A total of 127 myopes in ophthalmology were included. The calculated AC/A was obtained by near/distance phoria and the gradient AC/A was obtained...
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2022-06-01
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| Series: | Guoji Yanke Zazhi |
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| Online Access: | http://ies.ijo.cn/cn_publish/2022/6/202206037.pdf |
| _version_ | 1818239721336209408 |
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| author | Min Tang Shi-Rui Yang Bao-Zeng Xu Wen-Hua Li Yu-Lin Lei |
| author_facet | Min Tang Shi-Rui Yang Bao-Zeng Xu Wen-Hua Li Yu-Lin Lei |
| author_sort | Min Tang |
| collection | DOAJ |
| description | AIM: To analyze the clinical application of calculated and gradient accommodative convergence/accommodation ratio(AC/A)in different eye positions.METHODS: A total of 127 myopes in ophthalmology were included. The calculated AC/A was obtained by near/distance phoria and the gradient AC/A was obtained by near addition +1.00D. The differences of eye positions of the calculated and gradient AC/A were compared. RESULTS:The calculated AC/A value was higher than the near +1.00D gradient AC/C(P<0.01); Comparing the same method in different eye positions revealed that the calculated AC/A and gradient AC/A were significantly different, which has the highest AC/A in the esophoria group and the lowest AC/A in the exophoria group; Comparing the two methods in the same group revealed that the calculated AC/A in the esophoria group and the normal group was higher than the gradient AC/A(P<0.01), and there was no significant difference in the AC/A measured by the two methods in the exophoria group(P>0.05).CONCLUSION: The calculated AC/A is higher than the gradient AC/A, especially in patients with esophoria and emmetropia, it is easy to obtain high AC/A values by using the calculation method, resulting in erroneous diagnosis. The gradient method is more recommended. |
| first_indexed | 2024-12-12T13:02:03Z |
| format | Article |
| id | doaj.art-829444bb44b944fa840748d1f6b46962 |
| institution | Directory Open Access Journal |
| issn | 1672-5123 |
| language | English |
| last_indexed | 2024-12-12T13:02:03Z |
| publishDate | 2022-06-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | Guoji Yanke Zazhi |
| spelling | doaj.art-829444bb44b944fa840748d1f6b469622022-12-22T00:23:46ZengPress of International Journal of Ophthalmology (IJO PRESS)Guoji Yanke Zazhi1672-51232022-06-012261066106810.3980/j.issn.1672-5123.2022.6.37202206037Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoriaMin Tang0Shi-Rui Yang1Bao-Zeng Xu2Wen-Hua Li3Yu-Lin Lei4Binzhou Medical University, Binzhou 256603, Shandong Province, ChinaBinzhou Medical University, Binzhou 256603, Shandong Province, ChinaJinan Mingshui Eye Hospital, Jinan 250200, Shandong Province, ChinaJinan Mingshui Eye Hospital, Jinan 250200, Shandong Province, ChinaJinan Mingshui Eye Hospital, Jinan 250200, Shandong Province, ChinaAIM: To analyze the clinical application of calculated and gradient accommodative convergence/accommodation ratio(AC/A)in different eye positions.METHODS: A total of 127 myopes in ophthalmology were included. The calculated AC/A was obtained by near/distance phoria and the gradient AC/A was obtained by near addition +1.00D. The differences of eye positions of the calculated and gradient AC/A were compared. RESULTS:The calculated AC/A value was higher than the near +1.00D gradient AC/C(P<0.01); Comparing the same method in different eye positions revealed that the calculated AC/A and gradient AC/A were significantly different, which has the highest AC/A in the esophoria group and the lowest AC/A in the exophoria group; Comparing the two methods in the same group revealed that the calculated AC/A in the esophoria group and the normal group was higher than the gradient AC/A(P<0.01), and there was no significant difference in the AC/A measured by the two methods in the exophoria group(P>0.05).CONCLUSION: The calculated AC/A is higher than the gradient AC/A, especially in patients with esophoria and emmetropia, it is easy to obtain high AC/A values by using the calculation method, resulting in erroneous diagnosis. The gradient method is more recommended.http://ies.ijo.cn/cn_publish/2022/6/202206037.pdfaccommodation convergence to accommodation ratio(ac/a)calculated ac/a ratiogradient ac/a ratiophoria |
| spellingShingle | Min Tang Shi-Rui Yang Bao-Zeng Xu Wen-Hua Li Yu-Lin Lei Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria Guoji Yanke Zazhi accommodation convergence to accommodation ratio(ac/a) calculated ac/a ratio gradient ac/a ratio phoria |
| title | Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria |
| title_full | Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria |
| title_fullStr | Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria |
| title_full_unstemmed | Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria |
| title_short | Comparison of calculated and gradient AC/A ratios among normal, exophoria and esophoria |
| title_sort | comparison of calculated and gradient ac a ratios among normal exophoria and esophoria |
| topic | accommodation convergence to accommodation ratio(ac/a) calculated ac/a ratio gradient ac/a ratio phoria |
| url | http://ies.ijo.cn/cn_publish/2022/6/202206037.pdf |
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