No author has a financial or proprietary interest in any material or method mentioned.

any of the instruments used in this study. Flattest and steepest keratometric data and also IOP showed highly significant correlation with the ten specific CorVis ST parameters. Conclusions:The novel technique measuring ocular biomechanical properties showed high repeatability for only IOP and pachymetric data determined in our study. Single measurements are not reliable in case of the ten device-specific parameters. The equipment allows for conducting clinical examinations, and screenings of surgeries altering ocular biomechanical properties with some form of averaging of multiple measurements.

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The results indicate that the devices tested cannot be simply used interchangeably. For long-term patient follow-up, one specific instrument is recommended. Recently developed pachymetry machines are especially helpful when additional corneal data such as thickness profile, elevation maps, anterior chamber depth, and endothelial morphology are required.

Tear hyperosmolarity is considered a key factor that leads to dry eye symptoms and to the progression of clinical signs. Osmolarity measurements with the TearLab system disclosed no ability to distinguish between healthy individuals and patients with dry eye. This suggests that the TearLab device should not be used alone but in combination with classical dry eye tests.

Anterior chamber measurements were significantly deeper with AS-OCT than with US immersion A-scan. Repeatability of ACD measurements was better with AS-OCT than with immersion US, and reproducibility was equal with the 2 methods.

Abstract:Introduction: Our aim was to analyze the magnitude, the orientation and the agerelated changes of corneal astigmatism and its correlation with biometric parameters in healthy eyes. Patients and methods: Patients over 15 years were enrolled in our study. Exclusion criteria were previous ocular surgery, corneal disease or contact lens wearing. Axial length (AL), keratometric readings and anterior chamber depth (ACD) were assessed using IOLMaster. Results: In our study 1092 eyes were examined. Abstract Introduction:Our aim was to analyze the magnitude, the orientation and the age-related

In phakic eyes, ACD measured with the Pentacam and with US was the same. However, in pseudophakic eyes, the difference was significantly lower when the ACD was measured with the Pentacam. Therefore, in pseudophakic patients, further evaluation of ACD data with the Scheimpflug-based system is necessary.