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Assessing Rod, Cone, and Melanopsin Contributions to Human Pupil Flicker Responses
(Association for Research in Vision and Ophthalmology, 2014-02)
Purpose: To determine the relative contributions of rods, cones and melanopsin to pupil responses in humans using temporal sinusoidal stimulation for light levels spanning the low mesopic to photopic range. Methods: A ...
Dynamic Features for Iris Recognition
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCPISCATAWAY, 2012)
The human eye is sensitive to visible light. Increasing illumination on the eye causes the pupil of the eye to contract, while decreasing illumination causes the pupil to dilate. Visible light causes specular reflections ...
Effect of experimental diabetic retinopathy on the non-image-forming visual system
(Taylor & Francis, 2013-05)
Diabetic retinopathy is a leading cause of blindness. Intrinsically photosensitive retinal ganglion cells (ipRGCs), which express the photopigment melanopsin, are involved in non-image-forming visual responses such as ...
Effect of experimental glaucoma on the non-image forming visual system
(Wiley, 2011-06)
Glaucoma is a leading cause of blindness worldwide, characterized by retinal ganglion cell degeneration and damage to the optic nerve. We investigated the non-image forming visual system in an experimental model of glaucoma ...
Experimental optic neuritis induced by the microinjection of lipopolysaccharide into the optic nerve
(Elsevier Inc, 2015-04)
Optic neuritis (ON) is a condition involving primary inflammation, demyelination, and axonal injury in the optic nerve which leads to retinal ganglion cell (RGC) loss, and visual dysfunction. We investigated the ability ...
Luminance and chromatic signals interact differently with melanopsin activation to control the pupil light response
(Association for Research in Vision and Ophthalmology, 2016-08)
Intrinsically photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin. These cells receive afferent inputs from rods and cones, which provide inputs to the postreceptoral visual pathways. It is ...
Type 2 diabetes and cardiac autonomic neuropathy screening using dynamic pupillometry
(Wiley, 2015)
AIM: To determine if changes in pupillary response are useful as a screening tool for diabetes and to assess whether pupillometry is associated with cardiac autonomic neuropathy. METHODS: We conducted a cross-sectional ...
Neuroprotective effect of melatonin in experimental optic neuritis in rats
(Wiley Blackwell Publishing, Inc, 2016-04)
Optic neuritis (ON) is an inflammatory, demyelinating, and neurodegenerative condition of the optic nerve, which might induce permanent vision loss. Currently, there are no effective therapies for this disorder. We have ...