Measurement of spectacle-induced aniseikonia in axial anisometropia using the New Aniseikonia Test
Aim To determine whether spectacle correction in axial anisometropes can cause significant aniseikonia. Patients and methods A cross-sectional study was conducted on eight patients who had axial anisometropia with a spherical equivalent difference between both eyes equal or more than 4 D. Aniseikoni...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2022-01-01
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| Series: | Journal of the Egyptian Ophthalmological Society |
| Subjects: | |
| Online Access: | http://www.jeos.eg.net/article.asp?issn=2090-0686;year=2022;volume=115;issue=4;spage=180;epage=186;aulast=El-Abedin |
| Summary: | Aim To determine whether spectacle correction in axial anisometropes can cause significant aniseikonia.
Patients and methods A cross-sectional study was conducted on eight patients who had axial anisometropia with a spherical equivalent difference between both eyes equal or more than 4 D. Aniseikonia was measured using the New Aniseikonia Test ‘Awaya.’ Aniseikonia of 3% or more was considered clinically significant. Spearman correlation between the amount of aniseikonia and anisometropia was calculated.
Results The mean±SD age of the patients was 13±4.64 years (range, 7–24 years). Anisometropia ranging from −14.5 to +5.25 DS with a mean±SD of −6.70±5.18. The overall mean±SD of aniseikonia was −1.45±0.52. Five patients had no aniseikonia, three patients had −1% aniseikonia, and three patients had −2% aniseikonia. Spearman correlation showed an insignificant positive correlation between the amount of anisometropia and aniseikonia (r=0.05, P=0.86).
Conclusion Among our cases, spectacle correction in axial anisometropia did not lead to significant aniseikonia using the New Aniseikonia Test. Aniseikonia should be assessed in patients with anisometropia as 1% of aniseikonia per diopter of anisometropia does not apply in every case. |
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| ISSN: | 2090-0686 2314-6648 |