Ashtangasamgraha 32.3

32.3

tayorakālo rātriḥ |

kālastu sarvamaharvedanotpattirvā |

nivātaśaraṇaśayanasthasya viśodhya netramapāṅge bhājanaṃ kṛtvā vāmahastenonmīlya dakṣiṇahastena śuktyavasaktayā picuvartyā daśadvādaśāṣṭau vā bindūn kanīnakadeśe dvyaṅgulādavasecayet |

evamasya na bindupātenākṣitāḍanādrāgādayo jāyante |

āścyotitaṃ ca mṛdunā cailena śodhayet |

anyena coṣṇāmbuplutena vātakaphayoḥ svedayet |

āścyotanaṃ ca tayoḥ koṣṇam |

suśītaṃ pittaraktaviṣeṣu |

tattu nātyarthaṃ tīkṣṇamuṣṇaṃ śītaṃ prabhūtamūnamaparisrāvitaṃ vā yojayet |

atitīkṣṇamuṣṇaṃ vā dāharāgapākadṛṣṭidaurbalyāni karoti |

atiśītaṃ stambhāśrugharṣanistodān |

atimātraṃ kaṣāyavartmatāsaṅkocasphuraṇonmīlanapravātāsahatvagharṣān |

ūnapramāṇaṃ na rogaśāntim |

aparisrutamaśrugharṣavedanāḥ ||

tatra sandhimuktaṃ ṣaḍvidhamutpiṣṭaṃ viśliṣṭamavakṣiptamatikṣiptaṃ tiryakkṣiptaṃ vivartitamiti ||

The improper time for both is the night.
The proper time is all daytime, or when pain arises.
For one lying down in a draft-free shelter, having cleansed the eye and placed a vessel near the outer corner of the eye, having opened [the eyelids] with the left hand, one should instill eight, ten, or twelve drops into the area of the inner canthus from a distance of two finger-breadths with the right hand using a cotton wick soaked by means of a mother-of-pearl ladle.
In this way, redness and other [reactions] do not arise from striking the eye by falling drops.
And after instillation, one should wipe it with a soft cloth;
and in vāta and kapha, one should foment it with another [cloth] soaked in hot water.
And the eye-drop for the two of them is lukewarm;
in pitta, blood, and poison, very cold.
And one should not administer it excessively sharp, hot, cold, excessive, deficient, or unfiltered.
Excessively sharp or hot produces burning, redness, suppuration, and weakness of vision;
excessively cold produces stiffness, tearing, friction, and throbbing pain;
excessively copious produces astringency of the lids, contraction, twitching, wide-opening, intolerance to draft, and friction;
a deficient measure does not pacify the disease;
unfiltered causes tearing, friction, and pains.
In that regard, dislocation of a joint is of six kinds: crushed, separated, depressed, displaced upward, displaced sideways, and twisted.