त्रिदोषरक्तसम्पृक्तो यात्यूष्मोर्ध्वं ततोऽक्षिणि । दाहोषे मलिनं शुक्लमहन्याविलदर्शनम् ॥ २७ ॥
all the three doshas associated with blood make the heat move upward to the eyes. By that there is burning sensation, feeling of heat, dirtiness of the sclera. Objects seen appear as though dirty during the day
रात्रावान्ध्यं च जायेत विदग्धोष्णेन सा स्मृता । भृशमम्लाशनाद्दोषैः सास्रैर्या दृष्टिराचिता ॥ २८ ॥
and there is blindness at night due to excess heat. This is known as Ushnavidagdha Dristi. By overindulgence in foods which are sour, the doshas associated with blood get increased and accumulate in the eyes,
सक्लेदकण्डूकलुषा विदग्धाम्लेन सा स्मृता । शोकज्वरशिरोरोगसन्तप्तस्यानिलादयः ॥ २९ ॥
producing increase of moistness, itching and dirtiness. This disease is known as Amlavidagdha Dristi In person suffering from grief, fever and headache, the Vata etc.
धूमाविलां धूमदृशं दृशं कुर्युः स धूमरः । सहसैवाल्पसत्त्वस्य पश्यतो रूपमद्भुतम् ॥ ३० ॥
(doshas) make the eye as though covered with smoke and also the objects as if covered with smoke. This disease is Dhumara. The person of weak mind suddenly seeing sights which are grotesque,