Magnetic Resonance Imaging was used to study changes in the crystalline lens and ciliary body with accommodation and aging. Monocular images were obtained in 15 young (19-29 years) and 15 older (60-70 years) emmetropes when viewing at far (6 m) and at individual near points (14.5 to 20.9 cm) in the younger group. With accommodation, lens thickness increased (mean ± 95% CI: 0.33 ± 0.06 mm) by a ...

purpose: to evaluate the range of accommodation lag and it's signs and symptoms in 20-25 year-old female students at zahedan medical school, iran. methods: three-hundred female students were enrolled for assessment of accommodation. after exclusion of individuals with individuals with accommodation disorders in 3 steps including amplitude of accommodation, accommodative facility, and relat...

Common techniques of lens design lead to image quality assessment in the plane of the miniature display of a headmounted display (HMD) instead of image quality in visual space as expected from a usability point of view. In this paper, we present an analysis of HMD performance in visual space including MTF, accommodation, astigmatism, and transverse color smear.

Based on fuzzy control and sliding mode observer technique, a fault accommodation strategy is proposed for near space hypersonic vehicle (NSHV) with actuator fault in this study. Firstly, the Takagi-Sugeno (T-S) fuzzy model is implemented to represent the NSHV nonlinear dynamics, and a bank of sliding mode observers are designed for the established T-S model, which are used to generate the resi...

The study of gas-solid accommodation at low pressure is of paramount importance to several areas of scientific research and industrial development. In Chemical Vapor Deposition (CVD) processes for instance, ONERA has quantified the accommodation for several diatomicsolid pairs and shown that, near or below 100 Pa, the gas can be substantially colder than the surface being grown, at a distance l...

This paper deals with the application of state space neural network models to fault detection and accommodation of the boiler unit. The work describes two aspects. First one is the fault detection and in this paper to diagnose the fault the three methods are described and compared: simple and adaptive threshold and more robust method which is model error modelling. The second part of the paper ...

purpose: to study the prevalence and characteristics of accommodative esotropia (aet). methods: in a descriptive analytic study records of all patients referred from 1383 to 1388 to the strabismus clinic at nikookari eye center were reviewed and demographic data such as age, gender, refractive error, type of aet, mean deviation and amblyopia were analyzed. results: a total of 2,146 patients wer...

When we install a hypermedia application into a museum space we change the nature of both the space and the media. That accommodation must be addressed at the start of the design process or it will compromise both space and media. A careful (and effective) installation will take into account a number of specifics, including site and audience. What are the dimensions of this space? What is its c...