Comparison of Axial Ocular Measurements with Contact and Non-contact Biometry
نویسندگان
چکیده
منابع مشابه
A new non-contact optical device for ocular biometry.
BACKGROUND A new commercially available device (IOLMaster, Zeiss Instruments) provides high resolution non-contact measurements of axial length (using partial coherent interferometry), anterior chamber depth, and corneal radius (using image analysis). The study evaluates the validity and repeatability of these measurements and compares the findings with those obtained from instrumentation curre...
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Measurements are obligatory steps in every production process. Quality of products is closely related to the measurements and these links are given in the cycle of quality assurance. Inspection and measurements of products are carried out in all phases of product development. Control and measurements are undivided part of production in automatized and mass production. Every type of production c...
متن کاملEffect of soft contact lenses on optical measurements of axial length and keratometry for biometry in eyes with corneal irregularities.
PURPOSE To assess the repeatability and reliability of IOLMaster (Carl Zeiss Meditec, Inc., Dublin, CA) axial length and keratometry measurements (K readings) with a soft contact lens on normal eyes. The method is designed for eyes with corneal irregularities or after endothelial keratoplasty. METHODS Biometry was performed on 20 healthy right eyes of volunteer subjects with mean age, 27.3 +/...
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The paper presents the results of contact and non-contact measurements of external profiles of selected grinding pins. The measurements were conducted in order to choose the appropriate measuring technique in the case of the considered measurement task. In the case of contact measurements the coordinate measuring machine ACCURA II was applied. The used coordinate measuring machine was equipped ...
متن کاملCLINICAL SCIENCE A new non-contact optical device for ocular biometry
Background: A new commercially available device (IOLMaster, Zeiss Instruments) provides high resolution non-contact measurements of axial length (using partial coherent interferometry), anterior chamber depth, and corneal radius (using image analysis). The study evaluates the validity and repeatability of these measurements and compares the findings with those obtained from instrumentation curr...
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ژورنال
عنوان ژورنال: Pakistan Journal of Ophthalmology
سال: 2020
ISSN: 0886-3067
DOI: 10.36351/pjo.v36i1.922