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Comparing proximal convergence ratio in myopes
Aim: To determine if there is a difference at all in proximal convergence to accommodation ratio (PC/ A) between 2 myopic groups. Group A: -0.50D < SE < 3.00D, SE: spherical equivalent, D: Diopter) and Group B (-3.00D SE and above). Patients and methods: In this prospective observational study...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Romanian Society of Ophthalmology
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8764421/ https://www.ncbi.nlm.nih.gov/pubmed/35087977 http://dx.doi.org/10.22336/rjo.2021.71 |
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author | Vivekanand, Undrakonda Lobo, Sarita Gonsalves Dharmappa, Navya Kesireddy, Alekya |
author_facet | Vivekanand, Undrakonda Lobo, Sarita Gonsalves Dharmappa, Navya Kesireddy, Alekya |
author_sort | Vivekanand, Undrakonda |
collection | PubMed |
description | Aim: To determine if there is a difference at all in proximal convergence to accommodation ratio (PC/ A) between 2 myopic groups. Group A: -0.50D < SE < 3.00D, SE: spherical equivalent, D: Diopter) and Group B (-3.00D SE and above). Patients and methods: In this prospective observational study, 24 consecutive patients with myopia between -0.50D < SE < 3.00D were included in group A and 27 consecutive patients with myopia > -3.00 D SE were included in group B. Patients with pathological myopia, strabismus or heterophoria anomalies were excluded. The PC/ A ratio for both the groups were calculated by measuring the difference between value of accommodative convergence to accommodation ratio (AC/ A) derived from heterophoria and gradient method using a prism bar method. Statistical analysis was performed by analyzing descriptive statistics and the independent sample t-test using SPSS ver. 22.0 software. Results: The average calculated PC/ A ratio was 3.24∆/ D (SD = +0.68/ D) in group B (n=27) and 2.6∆/ D (SD = 0.86/ D) in group A (n=24) (p value <0.05). Conclusion: An evident high AC/ A ratio in group B patients with myopia more than -3.00 D was the predominant cause for high PC/ A ratio in group B patients. |
format | Online Article Text |
id | pubmed-8764421 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Romanian Society of Ophthalmology |
record_format | MEDLINE/PubMed |
spelling | pubmed-87644212022-01-26 Comparing proximal convergence ratio in myopes Vivekanand, Undrakonda Lobo, Sarita Gonsalves Dharmappa, Navya Kesireddy, Alekya Rom J Ophthalmol General Articles Aim: To determine if there is a difference at all in proximal convergence to accommodation ratio (PC/ A) between 2 myopic groups. Group A: -0.50D < SE < 3.00D, SE: spherical equivalent, D: Diopter) and Group B (-3.00D SE and above). Patients and methods: In this prospective observational study, 24 consecutive patients with myopia between -0.50D < SE < 3.00D were included in group A and 27 consecutive patients with myopia > -3.00 D SE were included in group B. Patients with pathological myopia, strabismus or heterophoria anomalies were excluded. The PC/ A ratio for both the groups were calculated by measuring the difference between value of accommodative convergence to accommodation ratio (AC/ A) derived from heterophoria and gradient method using a prism bar method. Statistical analysis was performed by analyzing descriptive statistics and the independent sample t-test using SPSS ver. 22.0 software. Results: The average calculated PC/ A ratio was 3.24∆/ D (SD = +0.68/ D) in group B (n=27) and 2.6∆/ D (SD = 0.86/ D) in group A (n=24) (p value <0.05). Conclusion: An evident high AC/ A ratio in group B patients with myopia more than -3.00 D was the predominant cause for high PC/ A ratio in group B patients. Romanian Society of Ophthalmology 2021 /pmc/articles/PMC8764421/ /pubmed/35087977 http://dx.doi.org/10.22336/rjo.2021.71 Text en © The Authors.Romanian Society of Ophthalmology https://creativecommons.org/licenses/by/2.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | General Articles Vivekanand, Undrakonda Lobo, Sarita Gonsalves Dharmappa, Navya Kesireddy, Alekya Comparing proximal convergence ratio in myopes |
title | Comparing proximal convergence ratio in myopes
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title_full | Comparing proximal convergence ratio in myopes
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title_fullStr | Comparing proximal convergence ratio in myopes
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title_full_unstemmed | Comparing proximal convergence ratio in myopes
|
title_short | Comparing proximal convergence ratio in myopes
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title_sort | comparing proximal convergence ratio in myopes |
topic | General Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8764421/ https://www.ncbi.nlm.nih.gov/pubmed/35087977 http://dx.doi.org/10.22336/rjo.2021.71 |
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