Cargando…
Case series about physiological astigmatism and the impact of pterygium surgery
INTRODUCTION: Pterygium is a benign conjunctival fibrovascular neoformation progressively encroaching on the cornea, it can cause corneal distortion and induce astigmatism, or aggravate pre-existing physiological astigmatism, which is defined as ≤ 0.50 D and not requiring optical correction. The rad...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9486741/ https://www.ncbi.nlm.nih.gov/pubmed/36147107 http://dx.doi.org/10.1016/j.amsu.2022.104488 |
_version_ | 1784792344501944320 |
---|---|
author | Youssoufou Souley, Abdoul Salam Oumarou Sambou, Khidrou Fadhloullahi Adam, Nouhou Diori Lucrece Joanelle, Eriga Abdou, Amza |
author_facet | Youssoufou Souley, Abdoul Salam Oumarou Sambou, Khidrou Fadhloullahi Adam, Nouhou Diori Lucrece Joanelle, Eriga Abdou, Amza |
author_sort | Youssoufou Souley, Abdoul Salam |
collection | PubMed |
description | INTRODUCTION: Pterygium is a benign conjunctival fibrovascular neoformation progressively encroaching on the cornea, it can cause corneal distortion and induce astigmatism, or aggravate pre-existing physiological astigmatism, which is defined as ≤ 0.50 D and not requiring optical correction. The radical treatment of pterygium is purely surgical, with conjunctivo-limbal grafting and conjunctival autografting emerging as the surgical techniques of choice. The main objective of the study was to investigate whether pterygium surgery does not worsen the preoperative physiological astigmatism. MATERIAL AND METHODS: This is a prospective cohort study conducted in the ophthalmology department of the Mohammed V Military Hospital in Rabat over a period of 12 months, including 43 stage II/III/IV pterygia that were operated on by conjunctival autograft by the same surgeon. First, we looked for an association between pterygium surgery and variations in astigmatism. For quantitative variables we used the Wilcoxon test. In a second step we split the file into two distinct groups according to the value of preoperative astigmatism≤ 0.5 D or >0.5 D in order to detect the impact of pterygium surgery on physiological astigmatism. Statistical analysis of the data was performed by comparing the distribution of these characteristics. RESULTS: The median astigmatism was 1 D (0.25; 2.50). 35% of our population had preoperative astigmatism ≤0.5 D. The Wilcoxon test showed that there was a statistically significant difference between preoperative and postoperative astigmatism (p = 0.001). The paired sample T-test showed no statistically significant difference between the preoperative and postoperative outcome in the physiological astigmatism population (p = 0.53). CONCLUSION: Many studies have shown the benefits of pterygium excision on astigmatism, but few studies have specified the impact of this surgery on physiological astigmatism. Our study showed that pterygium surgery does not alter physiological astigmatism. |
format | Online Article Text |
id | pubmed-9486741 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-94867412022-09-21 Case series about physiological astigmatism and the impact of pterygium surgery Youssoufou Souley, Abdoul Salam Oumarou Sambou, Khidrou Fadhloullahi Adam, Nouhou Diori Lucrece Joanelle, Eriga Abdou, Amza Ann Med Surg (Lond) Case Series INTRODUCTION: Pterygium is a benign conjunctival fibrovascular neoformation progressively encroaching on the cornea, it can cause corneal distortion and induce astigmatism, or aggravate pre-existing physiological astigmatism, which is defined as ≤ 0.50 D and not requiring optical correction. The radical treatment of pterygium is purely surgical, with conjunctivo-limbal grafting and conjunctival autografting emerging as the surgical techniques of choice. The main objective of the study was to investigate whether pterygium surgery does not worsen the preoperative physiological astigmatism. MATERIAL AND METHODS: This is a prospective cohort study conducted in the ophthalmology department of the Mohammed V Military Hospital in Rabat over a period of 12 months, including 43 stage II/III/IV pterygia that were operated on by conjunctival autograft by the same surgeon. First, we looked for an association between pterygium surgery and variations in astigmatism. For quantitative variables we used the Wilcoxon test. In a second step we split the file into two distinct groups according to the value of preoperative astigmatism≤ 0.5 D or >0.5 D in order to detect the impact of pterygium surgery on physiological astigmatism. Statistical analysis of the data was performed by comparing the distribution of these characteristics. RESULTS: The median astigmatism was 1 D (0.25; 2.50). 35% of our population had preoperative astigmatism ≤0.5 D. The Wilcoxon test showed that there was a statistically significant difference between preoperative and postoperative astigmatism (p = 0.001). The paired sample T-test showed no statistically significant difference between the preoperative and postoperative outcome in the physiological astigmatism population (p = 0.53). CONCLUSION: Many studies have shown the benefits of pterygium excision on astigmatism, but few studies have specified the impact of this surgery on physiological astigmatism. Our study showed that pterygium surgery does not alter physiological astigmatism. Elsevier 2022-08-25 /pmc/articles/PMC9486741/ /pubmed/36147107 http://dx.doi.org/10.1016/j.amsu.2022.104488 Text en © 2022 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Case Series Youssoufou Souley, Abdoul Salam Oumarou Sambou, Khidrou Fadhloullahi Adam, Nouhou Diori Lucrece Joanelle, Eriga Abdou, Amza Case series about physiological astigmatism and the impact of pterygium surgery |
title | Case series about physiological astigmatism and the impact of pterygium surgery |
title_full | Case series about physiological astigmatism and the impact of pterygium surgery |
title_fullStr | Case series about physiological astigmatism and the impact of pterygium surgery |
title_full_unstemmed | Case series about physiological astigmatism and the impact of pterygium surgery |
title_short | Case series about physiological astigmatism and the impact of pterygium surgery |
title_sort | case series about physiological astigmatism and the impact of pterygium surgery |
topic | Case Series |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9486741/ https://www.ncbi.nlm.nih.gov/pubmed/36147107 http://dx.doi.org/10.1016/j.amsu.2022.104488 |
work_keys_str_mv | AT youssoufousouleyabdoulsalam caseseriesaboutphysiologicalastigmatismandtheimpactofpterygiumsurgery AT oumarousamboukhidroufadhloullahi caseseriesaboutphysiologicalastigmatismandtheimpactofpterygiumsurgery AT adamnouhoudiori caseseriesaboutphysiologicalastigmatismandtheimpactofpterygiumsurgery AT lucrecejoanelleeriga caseseriesaboutphysiologicalastigmatismandtheimpactofpterygiumsurgery AT abdouamza caseseriesaboutphysiologicalastigmatismandtheimpactofpterygiumsurgery |