purpose: to measure corneal power using different methods to assess agreement between these methods among patients who underwent photorefractive keratotomy. methods: in this prospective comparative study, keratometry was measured in 66 eyes of 33 refractive surgery candidates using manual keratometry (kr), conventional topography average central corneal power (accp), galilei total corneal power...

This paper proposes a novel interactive technique, the Eye-Catcher, which helps photographers capture a variety of natural looking facial expressions of their subjects, by keeping the eyes of the subjects focused on the camera without the stress usually associated with being photographed. We develop a prototype system and verify the effectiveness through evaluation and discussion.

An observer’s eye movements are often informative about how the observer interacts with and processes a visual stimulus. Here, we are specifically interested in what eye movements reveal about how the content of information visualizations is processed. Conversely, by pooling over many observers’ worth of eye movements, what can we learn about the general effectiveness of different visualization...

WWW service has enabled development of e-learning systems that are considered to be direct application of the information and communication technology. xTEx-Sys system is an Web-based authoring shell with adapted environment to each actor of the system. Formal representation of course material in xTEx-Sys involves ontology driven knowledge description. Student’s knowledge evaluation in xTEx-Sys...

Spatial abilities involved in reasoning with diagrams have been assessed using tests supposed to require mental rotation (cube figures of the Vandenberg & Kruse). However, Hegarty (2010) described alternative strategies: Mental rotation is not always used; analytical strategies can be used instead. In this study, we compared three groups of participants in three external formats of presentation...

We p ropose a model o f l a n g u a g e use t h a t i s d e r i v e d from w l e w l ~ l a n g u a g e p r o c e s s i n g sys tems as knowledge -based s y s t ems . The knowledge t h a t needs t o be r e p r e s e n t e d and o r g a n i z e d h e r e i s t he l a r g e amount o f knowledge about what t h e u t t e r a n ce s of a language mean. In this paper, I describe some of the theoretlee...

PURPOSE To compare the corneal power measurements obtained using different topographic instruments after myopic photorefractive keratectomy (PRK). METHODS Patients with myopia who were candidates for corneal refractive surgery were sequentially included. Pre-PRK and six months post-PRK corneal powers were measured using Javal manual keratometer, Orbscan II, Galilei, Tomey TMS4, and EyeSys 200...

This paper aims to find the relationship between flying technical skills and eye-movement indicators of pilots by researching the flying skills and eye-movement parameters in the initial training phase. The operation performance of pilots was considered as an indicator of the level of the pilots’ technical skills. The fixation count, the fixation duration, the saccade amplitude, the saccade ang...

Individual differences make it difficult to recognize similarities between individuals in eye movement patterns. However, if consistencies can be found, eye movements could be used for a variety of purposes. In this study, the consistency of eye fixation patterns is explored using statistical evaluation as well as neural networks. Eye tracking data is used as input units into neural networks to...

Datasets of images annotated with eye tracking data constitute important ground truth for the development of saliency models, which have applications in many areas of electronic imaging. While comparisons and reviews of saliency models abound, similar comparisons among the eye tracking databases themselves are rare. In an earlier paper, we reviewed the content and purpose of over two dozen data...