Measurement of the distance between corneal apex and pupil center in patients following small-incision lenticule extraction or implantable collamer lens implantation and its correlation with the surgical-induced astigmatism

Autor: Yishan Qian, Lan Ding, Yanlan Ding, Lin Jiang, Zesheng Liu, Xingtao Zhou
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: BMC Ophthalmology, Vol 24, Iss 1, Pp 1-10 (2024)
Druh dokumentu: article
ISSN: 1471-2415
DOI: 10.1186/s12886-024-03352-6
Popis: Abstract Background To investigate the change in the distance between corneal apex and pupil center after small-incision lenticule extraction (SMILE) or implantable collamer lens (ICL) implantation and its correlation with surgical-induced astigmatism (SIA). Methods This study included patients who had undergone SMILE (n = 112) or ICL implantation (n = 110) to correct myopia and myopic astigmatism. The angle kappa was measured using a Scheimpflug imaging device (Pentacam) and represented as Cartesian values between the pupil center and the corneal vertex (X, Y) and chord u ( $$ \sqrt{{X}^{2}+{Y}^{2}}@ $$ orientation), and was compared pre- and post-operative. Results Following SMILE, the magnitude of chord u $$ (\sqrt{{X}^{2}+{Y}^{2}}$$ ) significantly increased in both eyes (Wilcoxon signed-rank test, OD: P
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