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Comparison of keratometry and total corneal power, as measured by an SS-OCT-based optical biometer, for intraocular lens power calculation in Asian eyes.
Savini, Giacomo; Taroni, Leonardo; Jeon, Sohee; Koh, Kyungmin; Yang, Hyun Seung; Abulafia, Adi; Lupardi, Enrico; Hoffer, Kenneth J; Moramarco, Antonio; Schiano-Lomoriello, Domenico.
Afiliación
  • Savini G; From the I.R.C.C.S. Bietti Foundation, Rome, Italy (Savini, Schiano-Lomoriello); Morgagni-Pierantoni Hospital, Forlì, Italy (Taroni); Key Eye Center, Seoul, South Korea (Jeon); Department of Ophthalmology, Kim's Eye Hospital, Konyang University College of Medicine, Seoul, South Korea (Koh); Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, South Korea (Yang); Department of Ophthalmology, Seoul Shinsegae Eye Center, Eui
J Cataract Refract Surg ; 50(11): 1117-1122, 2024 Nov 01.
Article en En | MEDLINE | ID: mdl-38958930
ABSTRACT

PURPOSE:

To investigate whether standard keratometry (K) or total corneal power (TCP) leads to more accurate refractive outcomes for intraocular lens (IOL) power calculation.

SETTING:

Public hospital.

DESIGN:

Retrospective evaluation of a diagnostic test instrument.

METHODS:

Preoperatively, all patients underwent optical biometry with Anterion, a swept-source optical coherence tomography device providing both K and TCP. The same IOL model was implanted in all cases. The whole sample was divided into a training dataset, used to optimize the formula constants, and a testing dataset, used to investigate the spherical equivalent prediction error (SEQ-PE) of 8 IOL power formulas. Trueness, precision, and accuracy were evaluated by means of the robust 2-sample t test. Cochran Q test was performed to assess whether the percentage of eyes with an SEQ-PE within each threshold was significantly different; in such an event, the McNemar test was then applied.

RESULTS:

Both the training and testing datasets included 317 eyes. No significant differences were detected for trueness because of constant optimization. Precision and accuracy were better when K was entered, although a statistically significant difference was observed only with the EVO (precision P = .02 and accuracy P = .03) and Haigis ( P < .01 for both precision and accuracy) formulas. No significant differences were observed for the percentage of eyes with an absolute SEQ-PE within any threshold.

CONCLUSIONS:

With most formulas, IOL power calculation is not more accurate when TCP is used instead of K.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Refracción Ocular / Córnea / Implantación de Lentes Intraoculares / Pueblo Asiatico / Lentes Intraoculares Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Cataract Refract Surg Asunto de la revista: OFTALMOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Refracción Ocular / Córnea / Implantación de Lentes Intraoculares / Pueblo Asiatico / Lentes Intraoculares Límite: Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Revista: J Cataract Refract Surg Asunto de la revista: OFTALMOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos