Page:Sushruta Samhita Vol 3.djvu/59

Chap. VII. ] is twelve. The six types of Linga-náśa (Drishti) have been described above. The six other forms of the disease, peculiar to the Drishti (pupil) are named as Pitta-vidagdha-Drishti, Śleshma-vidagdha-Drishti, hûma-darśin, Hrasva-Jâtya, Nakulândhyatá and Gambhîriká. 17. The disease in which the region of the Drishti (pupil) assumes a yellowish colour, and all external objects appear yellow to the sight owing to the presence of the vitaited (and augmented) Pitta in the region of the Drishti is called Pitta- Vidagdha-Drishti. It is due to an accumulation of the deranged Dosha (Pitta) in the third Patala (coat) of the eye, and the patient cannot see anything in the day, but can see only in the night. 18. The external objects appear white to the sight when it is affected by the accumulation of the deranged Kapha. The deranged Dosha (Kapha), in this case, is simultaneously divided over all the three Patalas (coats) of the eye. In consequence of this the patient is attacked with nocturnal blindness, being able to see only in the daytime owing to the (melting and) decrease of the deranged Kapha through the heat of the sun. This is known as Sleshma-vidagdha-Drishti. 19. The external objects appear dusky or smoke-coloured when the sight is affected through grief, (high and protracted) fever, over-straining or excessive physical exercise, or injury to the head, etc. The affection of vision thus engendered is called Dhuma-Drishti (smoky sight). 20.

The disease in which small things can be viewed only with the greatest difficulty (even) in the daytime, but can be viewed (easily and clearly) in the night owing to the subsidence of the deranged pitta through the