Post on 07-May-2015
description
Binocular Single Vision
Dr.Ricky Barot DOMS,(DNB Cont.)Dr.Vinay Prasad MBBS, (DNB Cont.)
BACKGROUND
Anatomical Aspects
Physiological Aspects
ANATOMICAL ASPECTS
Pre natal period
Just before birth
Post natal period
FACTORS AFFECTING
Genetic & Molecular control
Onset of electrical activity
Receptive fields
Chemical mediators & Neuromodulatory transmitters
Genetic & Molecular control
Normal structure development
Peripheral retinal development
Contour integration
ELECTRICAL ACTIVITY
Purpose
LTP & LTD
Cells that fire together wire together
Two distinct pathways
RECEPTIVE FIELDS
Further refinement under influence of visual experience
Group of cells behave in a similar manner
On – center & Off – center cells
Receptive fields in cortex
Chemical mediators & Neuromodulatory Transmitters
Controls circular receptive fields of retinal cells
Influence the visual cortex via modulatory pathways from other sites within cerebral cortex
Critical period, Plastic period & Amblyopia
Correlation with visual function development
Visual Acuity
Contrast Sensitivity
Orientation Specificity & Motion Selectivity
Stereopsis : pre & post – stereoptic phase
PHYSIOLOGICAL ASPECTS Visual Directions & Horoscope
Binocular Fusion
Dichoptic Stimulation
Stereopsis
Depth perception
Integration of Motor & sensory systems
Visual Directions & Horoscope
Visual space vs. Physical space
Visual Directions
Corresponding points & NRC
Horopter
Physiological Diplopia
Binocular Fusion
Sensory Fusion
Panum’s Area
Fixation Disparity
Theories
Dichoptic Stimulation
Depth with Fusion
Depth with Diplopia
Diplopia without Depth
Binocular Rivalry & Suppression
Stereopsis
Physiological basis
Stereopsis & Fusion
Stereoscopic Acuity
Neurophysiologic Basis
Depth perception
Stereopsis
Non stereoscopic binocular clues
Monocular clues
Influence of Accommodation & Convergence
Integration of Motor & sensory systems
Functions of motor system
Function of sensory system
GRADES OF BSV
Simultaneous Macular Perception
Fusion
Stereopsis
THANK YOU