Page:Sushruta Samhita Vol 3.djvu/33

Chap. I.] (white) part (Vitreous body) and the void (ethereal) Space (Ákâśa) is there to form lachrymal or the other ducts or sacs (Aśrumârga) through which the secretions are discharged. 4.

I shall now proceed to describe the Drishti (the central part of Retina — 'Macula Lutea') as set forth by expert ophthalmic physicians. The black portion of the eye (Krishna-mandala — Choroid) forms one third part of its whole extent while the Drishti, according to them, occupies only one-seventh part of the Krishna-mandala. The Mandalas or sub-divisions or circles of the eye-ball, the Sandhis or Joints (parts where these sub-divisions meet with one another) and the Patalas (layers or coats) of the eye are respectively five, six and six in number. 5-6.

Mandala and Sandhi:— The Mandalas of the eye are the following, viz., (1) the Pakshma-mandala (the circle of the eye-lashes), (2) the Vartma-mandala (the eye-lid) (3) the Śveta-mandala (the Sclerotic and Cornea), the Krishna-mandala (the choroid) and (4) the Drishti-mandala (the pupil). These circles are so arranged that the one preceding lies within the next in the list. * The Sandhis (which serve as lines of demarcation of the circles) already pointed out are six in number, the first binding the eye-lashes (Paksha-mandala) with the eye-lids (Vartma-mandala), the second the eye-lids and the Sclerotic coat (Śveta-mandala), the third binding the latter with the Krishna-mandala (choroid), the fourth situated between the latter and the Drishti-mandala, the fifth lying in the interior corner (Kaninakas) and the last (sixth) in the exterior (posterior) corner (Apángas) of the eye. 7-8.