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explain about the color vision of human eyethe human eye can see about 150 different colours in the visible spectrum 400- 750 nm red green and blue
state the transmission of visual sensationthis process takes place in the visual pathway from the retina to the visual cortex the impulse originating
describe the initiation of visual impulse when light falls on the retina it is absorbed by the photosensitive pigments of rods rhodopsin and cones
determine about the sense of contrastit is the ability to perceive slight changes in luminance between regions which
explain about the colour sensecolour sense is the faculty whereby we are enabled to distinguish colours as excited by light
what is form senseform sense is the faculty which enables us to perceive the shape of objects in the outer world here
state about visual systemit is important for our visual system to adapt to recognize objects clearly in differing conditions of
name the blood vessel which bring waste product to
explain the radiation cataract and steroid induced cataract of the eyeradiation cataractexposure to radiation causes discoid posterior sub-capsular
illustrate the diabetic contract of the eyediabetic cataract1 sorbitol aldose pathway in patients with diabetes there is increase in sugar alcohol
what are the risk factors of cataractogenesisrisk factors of cataractogenesisa hereditaryb exposure to ultra violet radiation the ultra violet
how are the change in the ageing lens occurred in the metabolismchanges in the ageing lens 1 physical changes lens weight increases light
define the lens transparency in metabolism of lenslens transparencya transparency depends on avoidance of large transitions of refractory index this
how is synthesis of soluble proteins taking equatorial part on the surface of lenssynthesis of soluble proteins taking equatorial part on the surface
what are the types of proteins in metabolism of lenssoluble proteinsits synthesis takes place in the equatorial part on the surface of lensa alpha
how are the proteins important in metabolism of lensproteins physical slate of protein is important for transparency of lens morner first time
what is the drug permeability across the corneadrug permeability across the cornea depends ontoa lipid and water solubility of the drugb molecular
how is hydration control by active pump mechanisms responsible in the corneal hydrationhydration control by active pump mechanismsa nak atpase pump
explain about the barrier function of epithelium and endothelium in corneal hydrationbarrier function of epithelium and endotheliumepithelium offers
how is the responsible slromal swelling pressure for corneal hydrationslromal swelling pressure stromal swelling pressure ssp is the pressure exerted
what are the factors responsible for corneal hydrationthe factors responsible for corneal hydration are as followsi stromal swelling pressureii
what are the different mechanisms responsible for corneal avascularity various mechanisms responsible for its avascularity are as followsa chemical
illustrate the theory of goldman according to corneal transparencygoldmans theorythe fibrils are small in relation to light and do not interfere with
what are special properties of transparency factors in corneal hydration of corneathe factors affecting the transparency include special properties