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KMID : 1151620200050020143
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Journal of Retina
2020 Volume.5 No. 2 p.143 ~ p.148
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Analysis of Difference between Target and Postoperative Spherical Equivalent in Combined Vitrectomy and Intraocular Lens Trans-scleral Ciliary Sulcus Fixation
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Choi Youn-A
Park Young-Min
Park Jung-Yul
Byon Ik-Soo
Park Sung-Who
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Abstract
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Purpose: To identify the difference between the target spherical equivalent and the postoperative spherical equivalent in trans-scleral ciliary sulcus fixation of intraocular lenses (IOLs).
Methods: The medical records of patients who received trans-scleral ciliary sulcus fixation of IOLs were retrospectively analyzed. All surgeries were done by a single surgeon with a single type of IOL. The residuals of the lens material and capsule were removed by vitreous cutter under the scleral indentation, and the vitreous was also sufficiently removed. The difference between the target spherical equivalent (SE) and postoperative SE was defined as the SE difference. Cornea astigmatism and refractive astigmatism were also analyzed.
Results: Fifty six eyes from 53 patients were included. The target SE was -0.430 ± 0.809 diopters (D), postoperative SE was -1.268 ± 1.267 D and the difference in SE was -0.842 ± 0.935 D. The postoperative refractive astigmatism was 1.65 ± 1.20 D. The corneal astigmatism increased from 1.01 ± 0.82 D before surgery to 1.68 ± 1.36 D after surgery (p < 0.001).
Conclusions: The postoperative SE after trans-scleral ciliary sulcus fixation of IOLs tended to involve myopic shifts as much as 0.842 D compared to the target SE. Postoperative astigmatism mainly originated from corneal astigmatism rather than IOL induced astigmatism.
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KEYWORD
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Intraocular lens, Pars plana, Reftactive errors, Spherical equivalent, Transscleral fixation
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