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HUMAN EYE AND COLOURFUL WORLD, image, image, image, image - Coggle Diagram
HUMAN EYE AND COLOURFUL WORLD
Structure of Eye
Cornea
Lens
Pupil
Retina
Iris
Optic Nerve
Vitreous Humour
Aqueous Humour
Myopia- Short-sightedness
Problem: A person can see things near to him but has problem seeing afar
Causes: Elongation of Eye Ball and Excessive curvature of eye ball :
Treatment: Use of Concave Lens
Hypermetropia- Far Sightedness
Problem: A person can see things far way but has problem seeing things near to him/her
Cause: Contraction of eye ball and lens being too long
Treatment: Use of convex lens
Presbyopia
Problem: A decreased elasticity of eye lens
Cause: Age related condition due to weakening of eye muscles
Treatment: Use of bifocal lens
