Eye or Vision Anatomy of the eye- Eye is the organ of sense for sight ,which situated in the orbital cavity or eye socket Eye is the the spherical shaped organ in the sense which is help in vision or sensory vision . It's about 2.5 CM in diameter and three layers of the eye are completely covered There are three layer is- 1.Outer layer or tunica fibrous 2.Middle layer or tunica vasculosa 3.Inner layer or Tunica Nervosa 1.Outer layer or tunica fibrous- - Outer layer consists of two structure cornea and sclera . It is outermost avascular layer of eyes which preserve the shape of eye , A nteriorly consists of cornea and posteriorly consists of sclera. A. Cornea - Cornea is the outermost part of the eyes which is anteriorly transparent Court over the coloured Iris . cornea is convex cornea is convex,anteriorly light rays enter into the eyes through the cornea to focus on the retina . structurally cornea c...
-- Parkinson's disease -- Introduction of Parkinson disease- it is a degenerative disease occurred due to degeneration of dopamine producing cell. which resulting in dopamine deficiency disease. play an important role in sensory filtering Parkinson disease occur due to dysfunction of extrapyramidal tract , most of develop in the age over 60 year , Parkinson is mainly caused by a dopamine factor. ै Etiology - exact cause is unknown but some toxic environment , chemicals such as pesticides and carbon monoxide are suspected contributing factors for developing Parkinson's disease, - Sach family history can cause the Parkinson's disease clinical manifestation - monotonous speech - mask li...