Comparison of Standard and Total Keratometry Astigmatism Measured with three Different Technologies
| Autor: | David P. Piñero, Ángel G. García, Humberto Carreras |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía, Grupo de Óptica y Percepción Visual (GOPV) |
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
genetic structures Astigmatism law.invention 03 medical and health sciences 0302 clinical medicine Optical biometry law Ophthalmology medicine Pentacam IOL-Master Óptica Keratometer business.industry Scheimpflug imaging Color light-emitting diode reflection topography medicine.disease eye diseases 030221 ophthalmology & optometry Optometry Christian ministry sense organs Corneal topography business 030217 neurology & neurosurgery Keratometry |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| Popis: | Purpose: To compare the keratometric and total corneal astigmatism measures provided by three different technologies as well as to assess the level of interchangeability among them. Methods: A Prospective, comparative study enrolling 94 eyes from 53 patients (age, 29-77 years) was carried out. All participants were patients with the diagnosis of cataract or patients with a transparent crystalline lens but seeking surgical presbyopia correction. A complete eye examination was performed in all eyes, including corneal analysis with three different devices: IOL-Master 700 (Carl Zeiss Meditec), Cassini (i-Optics), and Pentacam (Oculus Optikgeräte GmbH). Interchangeability of standard and total keratometric readings (equivalent keratometric readings for Pentacam) and astigmatism measures with these three systems were evaluated with the Bland-Altman analysis. Results: Significantly higher standard and total keratometric readings were obtained with the IOL-Master compared to the other two systems (p Conclusion: Corneal power and astigmatism measures obtained with IOL-Master 700, Cassini, and Pentacam systems cannot be used interchangeably. The impact of these differences on the refractive predictability achieved with different types of intraocular lenses (IOL) should be evaluated in the future in order to define which is the best corneal evaluation approach for optimizing the IOL power calculations. |
| Databáze: | OpenAIRE |
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