Sophia Reyes

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An indoor tracking and navigation system based on measurements of received signal strength (RSS) in wireless local area network (WLAN) is proposed. In the system, the location determination problem is solved by first applying a proximity constraint to limit the distance between a coarse estimate of the current position and a previous estimate. Then, a(More)
Microperimeters embody technological abilities required to assess components of residual visual functions and functional vision. Residual visual functions and functional vision after macular vision loss are mostly defined by 3 major components: scotoma characteristics, preferred retinal loci (PRLs) and oculomotor control. Microperimetry may be proven(More)
PURPOSE Preferred retinal loci used for eccentric fixation in patients with age-related macular degeneration (AMD) may be different from the eccentric neighbouring loci of highest retinal sensitivity. This study was designed to highlight the conceptual difference between the 2 and the concept of a functional retinal locus encompassing both the preferred(More)
To determine the efficacy of prisms used for redirection of incoming images towards the peripheral retina in cases with macular function loss. Meta-analysis of published work reporting outcomes from interventions using prisms was performed. The primary outcome measure selected for analysis was visual acuity (VA) used for viewing distance targets. Pooled(More)
OBJECTIVE To quantify residual abilities to identify a target's colour in cases with age-related macular degeneration (AMD). METHODS Subjects with AMD with best corrected visual acuity (BCVA) of 20/50 to 20/400 in the better eye (test eye) and age older than 55 years were recruited. A separate matching control group was recruited with subjects with BCVA(More)
OBJECTIVE It is the aim of this study to review residual vision in the less used eye of patients with age-related macular degeneration (AMD) using modern concepts for residual visual functions in addition to traditional methods for assessing visual acuity. DESIGN The study was designed as a retrospective, nonrandomized, observational case series. (More)
OBJECTIVE To clarify the efficacy of the macular mapping test (MMT) to identify eccentric fixation with preferred retinal loci (PRL). DESIGN Retrospective observational case series from archived data. PARTICIPANTS Cases with age-related macular degeneration with low vision in both eyes and best corrected visual activity (BCVA) of 20/50 to 20/400 in the(More)