..., instructions or products referred to in the content or advertisements. 2023 Cataract Intraocular lens Ophthalmic viscosurgical device Astigmatism Technique Alignment of the toric intraocular lens (IOL) in an appropriate position is crucial for effective correction of astigmatism [ 1, 2...

...Huiling Hu; Mingmin Yang; Bing Du; Min Fang; Xinhua Liu; Jiantao Wang Purpose: To evaluate and compare the corneal curvature and astigmatism in patients with persistent pupillary membrane (PPM) and healthy controls by partial coherence interferometry. Methods: This study included 14 eyes (9...

... was 0.37 ± 0.71 dpt (paired t test, p = 0.98). The mean predicted cylindrical power was -1.35 ± 0.86 dpt, and the mean measured cylindrical power was -1.42 ± 0.85 dpt (p = 0.27). The mean predicted change in the astigmatic axis was 33.7 ± 11.8°, and the mean measured parameter was 32.5 ± 15.4° (p = 0.49...

..., with primary and recurrent pterygia, that were analyzed for recurrence, best-corrected visual acuity (BCVA) and astigmatism in primary (P1 without PTK, P2 with PTK) and recurrent pterygia (R1 without PTK, R2 with PTK). BCVA and astigmatism were compared in patients with simple CAG alone (group I...

...J.G. Sivak; R.O. Kreuzer; T. Hildebrand Concern has been expressed in the literature regarding the frequency and amount of astigmatism found in patients with intraocular lens implants. Postoperative tilting of the implants is one suggested cause. We have measured the effect of tilt on focal length...

...Gunilla Rask; Anders Behndig Background: The aim of this study was to evaluate the impact of various sources of error in Goldmann applanation tonometry (GAT). Objectives: We evaluated the effect of corneal thickness, curvature, astigmatism and direction of gaze as sources of error in GAT. Methods...