|Prana vayu –
When it conveys the Chakshurendriya buddhi/ visual impulses to mann and atma, then only images are perceived. Indriyadhruk and poorana/nourishment are its important functions.
2. Udana vayu –
Bala and varnakruta are its functions. If vitiated causes chittabhransha and buddhibhransha (drushtibhransha), bluish, blackish discoloration and Urdhva – jatrugata vyadhi. It expresses various emotional feelings like pleasure, sorrow, anger, love, frustration etc on face. (Perhaps this is the reason behind calling eyes as mirror of emotions)
Vyana vayu – opening and closure of eyes, constriction and dilatation of pupil, circulation and propagation of rasa and rakta in all srotas are principle functions of this vayu. In presence of srotodushti it gets obstructed in srotas. It is vitiated by diseases of rasa, rakta, oja, and chetanadhatu; diarrhea, fever, aneamia; mental conditions like fear, sorrow, worry etc.
Responsible for equilibrium of entire body functions. It gives strength to Jatharagni. It’s deviation from equilibrium causes eye diseases.
Responsible for excreting the waste products. It has three properties namely yogavahi, vishada and daruna.
‘Vishada’-responsible for absorption of ‘kleda’ i.e. moisture causing dryness. Daruna-responsible for absorption of softness/ snigdhata causing hardness.
|Pachaka pitta –
Responsible for digestion of food material and segregation of dosha, rasadi dhatu, urine and stool. Disturbance of its equilibrium or it’s vitiation along with samana vayu and kledaka kapha, generates eye and other diseases.
Ranjaka pitta –
It generates raktadhatu from rasadhatu. Its deficiency causes anemia resulting in Karana / indriya daurbalya.
Sadhaka pitta –
Responsible for vigour i.e. sound physical and mental status; strong, healthy and well-nourished dhatus etc. It fulfills all wishes resulting in mental satisfaction. Its deficiency causes eye diseases due to weak and disturbed mental status as well as undernourished dhatus.
Alochaka pitta –
Alochaka pitta/alochaka agni is responsible for visualizing objects. Its vitiation causes visual impairment.
Digestion, body temperature, vision, hunger, thirst, appetite, luster, intelligence, bravery, patience, softness of body etc. are regulated by Pitta. It’s vrudhi or kshaya will cause disturbance in all these activities.
Homeostatic kledaka kapha, pachaka pitta and samana vayu are responsible for generating homeostatic Kapha which predominantly possesses madhura rasa.
-Unctuousness, healing, nurturing, nourishing, increasing strength, stability are the functions of this homeostatic kapha. Its deficiency causes faulty nourishment resulting in faulty functioning of various dnyanendriya, karmendriya etc.
-If madhura, amla and lavana rasa are ingested, kapha is nourished well whereas katu, tikta, kashaya rasa oppose genesis of prakruta kapha.
Tarpaka kapha –
Shira i.e. brain is the location of tarpaka kapha. Minute centers of various dnyanendriya, karmendriya etc are situated in the shira. When sensory impulses are carried to mann and atma by pranavayu, then only various sensations are perceived. These impulses are again carried to brain / motor centres in brain for executing various activities.
-All these centers are located in majja dhatu in shira. Very unctuous, nourishing and nurturing Tarpaka kapha is essential for stabilizing these excessive vatika activities as well as for its smooth, regular and normal functioning.
-Homeostatic Kapha is essential for generating rasa, mansa, meda, majja and shukra in homeostatic conditions. Its deficiency or vitiation causes faulty generation of these dhatu.