Wendelstein, Jascha; Casazza, Marina; Riaz, Kamran M; Fischinger, Isaak; Fuchs, Barbara; Bolz, Matthias; Seiler, Theo G; Kohnen, Thomas; Langenbucher, Achim (2023). Characteristics of surgically induced astigmatism after standardized microincisional cataract surgery with a superior limbal incision. Journal of cataract and refractive surgery, 49(10), pp. 1025-1035. Elsevier 10.1097/j.jcrs.0000000000001271
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PURPOSE
To determine 1) if measurements of surgically induced astigmatism (SIA) as measured by keratometry (K) and total keratometry (TK) differ 2) if SIA affects the magnitude and/or meridian of keratometric astigmatism 3) if SIA evolves over time.
SETTING
Tertiary care center.
DESIGN
Retrospective data analysis.
METHODS
A swept-source OCT (SS-OCT) biometry dataset (IOLMaster700) consisting of 498 eyes (327 patients) from a tertiary care center was analyzed. For all eyes preoperative and postoperative biometric measurements at 1-, 3-, and 6-months postoperative visits were considered for vector analysis of SIAK and SIATK.
RESULTS
Centroids in right and left eyes were 0.26 dpt @5°/ 0.31 dpt @1° for SIAK and 0.27 dpt @4°/ 0.34 dpt @1° for SIATK. Centroids for difference vectors (DV) K-TK in right and left eyes were 0.02 dpt @ 176°/ 0.03 dpt @6°. The mean SIA magnitudes in right and left eyes were 0.48±0.41 dpt and 0.50±0.37 dpt for SIAK and 0.53±0.42 dpt and 0.54±0.40 dpt for SIATK. In eyes with ATR astigmatism, an increase in postoperative astigmatism magnitude was more common than a decrease. More than 30% of eyes showed changes in the meridian of more than 15°.
CONCLUSION
Overall, we observed differences in K- and TK-derived SIA, and changes in SIA magnitude over time. For post-surgical interventions, postoperative astigmatism meridian values should be measured to base treatments. Astigmatism magnitude showed a tendency to decrease for steep-meridian incisions and to increase in flat-meridian incisions.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ophthalmology |
UniBE Contributor: |
Seiler, Günter Theodor Michael |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
0886-3350 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
03 Aug 2023 12:56 |
Last Modified: |
29 Jul 2024 00:25 |
Publisher DOI: |
10.1097/j.jcrs.0000000000001271 |
PubMed ID: |
37532255 |
BORIS DOI: |
10.48350/185199 |
URI: |
https://boris.unibe.ch/id/eprint/185199 |
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