Throughout Ayurveda texts, the practices of Padabhyanaga, Padatrdharana, Prakshalana, and Padapooja have been emphasized as beneficial for ocular health, referred to as Dhrishti Prasadaka or Chakshusya. Acharya Vagbhatta's elaboration on two Nadi originating from the midpoint of the feet, ascending to the Shirah Pradesh and extending to the Netra, underscores a profound correlation between the Chakshu Indriya and the Pada. This research article delves into the intricate relationship between the foot and the eye as elucidated in ancient Ayurveda texts. After meticulous examination of various sources, it becomes evident that a network of interconnected Nadi links the foot to the eye. Texts such as Vaishshtha Samhita, Varah Samhita, Shandilya Samhita, and Darshan Samhita mention Yashshvini-Pusa Nadi connected by Varana Nadi to the right eye, and Hasthjihva-Gandhari Nadi connected via Vishwodhara Nadi to the left. Similarly, insights from Yoga Upanishads and Varmam Shastra further corroborate the association of specific Nadi with ocular function. Central to this understanding is the role of Vayu, described as the "Yantra Tantra Dhra," responsible for physiological functioning via the Nadi. The unimpeded flow of Vayu through the Nadi is crucial for overall health. Acharya Charaka's mention of Vayu residing abundantly in Twacha (skin) highlights the tactile sensation's dependency on Vayu, suggesting the efficacy of Tailabhyanga (foot massage) in maintaining Vayu equilibrium, particularly Vyana and Kurma Vayu, thus benefiting ocular health. Hence, Padabhyanga emerges as a pivotal practice for promoting eye wellness, aligning with the concept of Chakshushya.
Lovepreet et al. (Sun,) studied this question.