학술논문
Refractive Predictability of Partial Coherence Interferometry and Factors that can Affect It
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- 영문명
- 발행기관
- 대한안과학회
- 저자명
- Seung Mo Kim Joohyun Choi Sangkyung Choi
- 간행물 정보
- 『The Korean Journal of Ophthalmology』Vol.23 No.1, 6~12쪽, 전체 7쪽
- 주제분류
- 의약학 > 기타의약학
- 파일형태
- 발행일자
- 2009.03.30
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국문 초록
영문 초록
Purpose: To evaluate the refractive predictability of a partial coherence interferometry (PCI) biometry device (IOL
Master??) for cataract surgery and to investigate factors that may affect it.
Methods: Retrospective review of 209 eyes from 151 patients that had undergone preoperative PCI biometry
and an uneventful phacoemulsification cataract surgery with posterior chamber intraocular lens (IOL) implantation
was conducted. Prediction error defined as the intended refraction minus the postoperative refraction in spherical
equivalent (SE) and the absolute error were analyzed according to IOL calculation formulas, patient characteristics,
preoperative visual acuity (VA) and refraction, posterior subcapsular cataract (PSC), signal-to-noise
ratio (SNR), and axial length (AL).
Results: The overall refractive predictability of the PCI device was good. Generally, the SRK/T formula performed
better than the SRK-II formula. Refractive predictability was slightly worse in eyes with ≥+2.0 diopters (D) of
preoperative SE (with both SRK-II and SRK/T) and in eyes with an AL≤23.0 mm (only with SRK-II. No other
factors significantly affected the refractive predictability of the PCI, although poor VA, dense PSC, and poor SNR
were closely interrelated.
Conclusions: The SRK/T formula performed significantly better than the SRK-II formula. Eyes with an AL≤23.0
mm were associated with significantly greater hyperopic shifts in postoperative refraction with the SRK-II formula,
but not with the SRK/T formula. A preoperative SE≥+2.0D was related to a significantly greater hyperopic shift in
postoperative refraction. With proper verification of measured data and a suitable IOL calculation formula, good
refractive predictability is expected from PCI biometry regardless of patient characteristics, preoperative VA, SNR,
PSC, and AL.
Korean J Ophthalmol 2009;23:6-12 ⓒ 2009 by the Korean Ophthalmological Society.
목차
Materials and Methods
Discussion
References
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