Article
The combined effect of tropicamide and phenylephrine on corneal astigmatism axis
Author/s | Sánchez González, José María
Flikier, David Nebro-Cobos, Salvador Zamorano Martín, Francisco Rachwani-Anil, Rahul García Lorente, María Borroni, Davide Peraza-Nieves, Jorge Rocha de Lossada, Carlos |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2022 |
Deposit Date | 2024-06-10 |
Published in |
|
Abstract | Purpose. To analyze astigmatism axis changes after tropicamide and phenylephrine combined instillation. Method. One hundred and thirty-one eyes from sixty-six patients enrolled this cross-sectional study. An extensive ... Purpose. To analyze astigmatism axis changes after tropicamide and phenylephrine combined instillation. Method. One hundred and thirty-one eyes from sixty-six patients enrolled this cross-sectional study. An extensive ocular examination was carried out prior to tropicamide and phenylephrine instillation. Power and axis value from flat, steep, and mean keratometry were calculated using an Auto Kerato-Refractometer (AKR). Later, topography and tomography maps were evaluated with Pentacam HR® (Oculus, Wetzlar, Germany). Subsequently, a single drop of tropicamide 1% and phenylephrine hydrochloride 10% were instilled twice, with a five-minute gap between each instillation. After thirty minutes, the AKR and Pentacam HR® tests were repeated. Results. Incyclotorsion was found in 59 eyes (45.1 %) and mean absolute incyclotorsion change was 3.91 ± 3.62 degrees (0.10 to 14.20). Excyclotorsion was found in 72 eyes (54.9%) and mean excyclotorsion change was 4.99 ± 5.94 degrees (0.20 to 36.20). We observed that 74.6% and 68.1% of eyes experienced incyclotorsion and excyclotorsion within 0 to 5 degrees, respectively. Fewer patients experienced incyclotorsion and excyclotorsion changes within 5 to 10 degrees, precisely 11.8% and 19.4%, respectively. Eyes that experienced over 10 degrees of incyclotorsion and excyclotorsion were 13.6% and 12.5%, respectively. Conclusion. Astigmatism axis could change after combined tropicamide and phenylephrine instillation. Reference axis marking in astigmatism correction surgery should be performed under the same circumstances as the astigmatism axis has been measured. |
Citation | Sánchez González, J.M., Flikier, D., Nebro-Cobos, S., Zamorano Martín, F., Rachwani-Anil, R., García Lorente, M.,...,Rocha de Lossada, C. (2022). The combined effect of tropicamide and phenylephrine on corneal astigmatism axis. Current Eye Research, 47 (2), 179-186. https://doi.org/10.1080/02713683.2021.1971720. |
Files | Size | Format | View | Description |
---|---|---|---|---|
The combined effect_Sánchez ... | 5.299Mb | [PDF] | View/ | Versión aceptada |