Intraocular Lens Power Calculations Using Dual Scheimpflug Analyzer
Journal of the Korean Ophthalmological Society
; : 369-379, 2016.
Article
em Ko
| WPRIM
| ID: wpr-189735
Biblioteca responsável:
WPRO
ABSTRACT
PURPOSE:
To investigate the accuracy of intraocular lens power calculations using simulated keratometry (simK) of dual Scheimpflug analyzer and 5 types of formulas in cataract patients.METHODS:
The keratometry (K), axial length (AXL) and anterior chamber depth (ACD) were measured using ultrasound biometry (USB) combined with auto-keratometry (Auto-K), parital coherence interferometry (PCI; IOL master®) and dual Scheimpflug analyzer (DSA; Galilei®) in 39 eyes of 39 patients. Predicted refraction was calculated using Auto-K, mean K of PCI, and simK and total corneal power (TCP) of DSA in the Sanders-Retzlaff-Kraff (SRK-T) formula. The SRK-II, SRK-T, Holladay II, Haigis, and Hoffer-Q formula were used to calculate predicted refraction with the simK of DSA and AXL of USB. Manifest refraction, mean numerical error (MNE) and mean absolute error were evaluated 1, 3 and 6 months after cataract surgery.RESULTS:
TCP of DSA was lower compared with other keratometric values (p < 0.05). The MNE was not different among Auto-K, mean K and simK. The MNE using TCP was larger compared with Auto-K, mean K and simK at 1 month after surgery (p < 0.05). There was a difference in MNE between simK and TCP of DSA at 6 months after surgery (p < 0.05). The MNE of SRK-T formula was the smallest in the intraocular lens (IOL) power calculation using the simK of DSA.CONCLUSIONS:
We suggest using IOL power calculations with simK of DSA and SRK-T formula rather than TCP of DSA in cataract patients with normal corneas.Palavras-chave
Texto completo:
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Base de dados:
WPRIM
Assunto principal:
Catarata
/
Biometria
/
Ultrassonografia
/
Córnea
/
Interferometria
/
Lentes Intraoculares
/
Câmara Anterior
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
Ko
Ano de publicação:
2016
Tipo de documento:
Article