Uncorrected visual acuity in patients with simple myopic astigmatism based on the power and axis of the astigmatism Artykuł oryginalny

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Opublikowane: paź 29, 2025
DOI: https://doi.org/10.24292/01.OT.051225
Słowa kluczowe:
astigmatism, visual acuity, uncorrected, axis, power of astigmatism

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Hadis Pourchamani
Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran
http://orcid.org/0009-0004-0797-7567
Hassan Hashemi
Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran
http://orcid.org/0000-0002-6086-1537
Ebrahim Jafarzadehpur
Rehabilitation Research Center, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
http://orcid.org/0000-0002-4451-800X
Ali Mirzajani
Rehabilitation Research Center, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
http://orcid.org/0000-0003-1520-0470
Abbasali Yekta
Refractive Errors Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
http://orcid.org/0000-0003-4356-9064
Alireza Mohamadi
Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran
http://orcid.org/0000-0001-7593-2505
Mehdi Khabazkhoob
Department of Medical Surgical Nursing, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
http://orcid.org/0000-0003-0801-8793

Abstrakt

Purpose: The aim of the current study is to assess uncorrected visual acuity in eyes with simple myopic astigmatism.


Methods: patients with simple myopic astigmatism who had no history of surgery or pathology with best-corrected visual acuity of logMAR 0.0 (or 6/6) were included in this study. In the present study, eyes were classified into three groups; with-the-rule (WTR) (180 ±30), against-the-rule (ATR) (90 ±30) and oblique. The comparison of uncorrected visual acuity among these three groups was made based on the power and type of refractive and corneal astigmatism.


Results: Only right eye per participant was chosen, providing a final sample of 1435 eyes. The number (percentage) of eyes with WTR, ATR and oblique astigmatism were 555 (38.7%), 681 (47.5%) and 199 (13.9%) respectively. The mean uncorrected visual acuity was different among three groups (p <0.001). Mean logMAR visual acuity in eyes with 1 D of astigmatism or less were 0.06 (±0.09), 0.07 (±0.09) and 0.06 (±0.08) in WTR, ATR and oblique astigmatism respectively. Mean logMAR visual acuity in eyes with greater than 3 D of astigmatism were 0.51 (±0.12), 0.17 (±0.06) and 0.43 (±0.19) in WTR, ATR and oblique astigmatism respectively which showed a significant difference among them (p <0.001).


Conclusion: The magnitude and axis of astigmatism both were associated with uncorrected visual acuity in eyes with simple myopic astigmatism so that increasing the power of astigmatism reduces vision.

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Jak cytować
1.
Pourchamani H, Hashemi H, Jafarzadehpur E, Mirzajani A, Yekta A, Mohamadi A, Khabazkhoob M. Uncorrected visual acuity in patients with simple myopic astigmatism based on the power and axis of the astigmatism. Ophthatherapy [Internet]. 29 październik 2025 [cytowane 10 czerwiec 2026];12(3):219-26. Dostępne na: https://www.journalsmededu.pl/index.php/ophthatherapy/article/view/3220
Numer
Tom 12 Nr 3 (2025)
Dział
Diagnostyka
Creative Commons License

Utwór dostępny jest na licencji Creative Commons Uznanie autorstwa – Użycie niekomercyjne – Bez utworów zależnych 4.0 Międzynarodowe.

Copyright: Medical Education sp. z o.o. License allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.

Address reprint requests to: Medical Education, Marcin Kuźma (marcin.kuzma@mededu.pl)

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