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CHANGES IN VECTOR ASTIGMATISM AFTER SUPEROTEMPORAL VERSUS TEMPORAL CLEAR CORNEAL INCISION CATARACT SURGERY.
- Source :
-
Clinical & Investigative Medicine . Dec2022, Vol. 45 Issue 4, pE16-E24. 9p. - Publication Year :
- 2022
-
Abstract
- Purpose: To investigate vector and refractive astigmatism changes after superotemporal versus temporal clear corneal incision cataract surgery. Methods: Patients were diagnosed with age-related cataract with corneal astigmatism < 1.5 diopters (D) and were divided into two groups: superotemporal incision (R group) and temporal incision (L group). Uncorrected visual acuity, manifest refraction, corneal topography, anterior segment optical coherence tomography was performed pre- and six months postoperatively. Total ocular astigmatism, corneal astigmatism, vector of surgically induced corneal astigmatism (SICA), non-corneal ocular residual astigmatism (N-CORA), postoperative intraocular lens decentration and tilt were analyzed. Results: Thirty-eight subjects were included: 21, R group; 17, L group. After surgery, the N-CORA decreased significantly from 1.17±0.72 D to 0.73±0.47 D in all patients (P=0.001), 1.03±0.52 D to 0.70±0.40 D in the R group (P=0.005) and 1.35±0.90 D to 0.78±0.55 D in the L group (P=0.033). Significant differences between the R and L groups were found in the postoperative meridian of anterior corneal astigmatism (75.95±52.50 vs 116.79±47.29; P=0.017), total corneal astigmatism (51.65±42.75 vs 95.20±57.32; P=0.011), J45 change vector of SICA in the anterior cornea (-0.10±0.18 vs 0.00±0.11; P=0.048) and total cornea surface (-0.14±0.17 vs 0.03±0.12; P=0.001). Conclusion: The N-CORA decreased significantly after cataract surgery. Superotemporal and temporal incisions caused differences in the meridian components of oblique astigmatism in some patients but did not have a significant effect on the magnitude of corneal astigmatism. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0147958X
- Volume :
- 45
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Clinical & Investigative Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 161254436
- Full Text :
- https://doi.org/10.25011/cim.v45i4.38934