ālocaka-pitta: what the term means and how it is translated
ālocaka-pitta आलोचकपित्त is an Ayurvedic technical term. It is rendered into English in 4 different ways, which is the reason this page exists: the renderings do not agree, and the difference between them changes what the term is taken to mean.
| Transliteration | ālocaka-pitta |
|---|---|
| Devanagari | आलोचकपित्त |
| Also written | ālocakāgni, Alochakagni, Alochaka Pitta, Aalochaka Pitta |
| Category, as gathered | pitta-subtype |
| Grouped here under | Dosha and its subtypes |
| Classical citations | 3 |
| Citations checked | 2026-10-08 |
How it is translated, and whether the translation holds
Each rendering is given with the source that uses it. The assessment is ours.
Pitta for vision
WHO international standard terminologies on Ayurveda (2022), term ID ITA-2.1.2.4 · ITA-2.1.2.4; printed p. 35 (PDF p. 53). Sanskrit term 'ālocaka-pittam'. Description: 'Subtype of pitta seated in the eye which is responsible for visual perception.' · standards-body
WHO says 'the eye'; Suśruta's mūla says specifically dṛṣṭi (the pupil/visual apparatus), which Bhishagratna renders 'the pupils of the eyes'. WHO's broader 'eye' loses that precision.
Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that licence permits. It is deliberately absent from the downloadable dataset, which is offered under CC BY 4.0 and invites the modification a NoDerivs licence forbids.
Alochakagni (the Pittam or fire of sight)
Suśruta Saṃhitā tr. Kaviraj Kunja Lal Bhishagratna (public domain) · Sūtrasthāna ch. 21, Wikisource text · public-domain-translation
Bhishagratna's phrase for the function, 'its office is to catch the image of any external object presented to the eyes', is a notably active/receptive rendering of rūpa-grahaṇa.
Alochaka
Suśruta Saṃhitā tr. Bhishagratna, footnote at Sūtrasthāna ch. 15 · 'They are named as Ranjaka. Pachaka, Sadhaka (Medhakrit and Ojakrit), Alochaka and Bhrajaka.' · public-domain-translation
At Su.Sū. 15.4 the corresponding function is tejaḥ-kṛt, which Bhishagratna glosses as 'the origination and preservation of eye-sight (Teja-Krit)'.
perception of forms / vision
EasyAyurveda, Suśruta Sūtrasthāna 21 study page · Commentary under Su.Sū. 21.10 · modern-textbook-website
'Perception of forms' is closer to rūpa-grahaṇa than the bare 'vision'; rūpa means visible form/colour, not light.
The classical passages
Each citation gives its address so a reader can check it in a printed edition, our account of what the passage establishes, and the result of reading it against its source.
Suśruta SaṃhitāSūtrasthāna 21 (Vraṇapraśna Adhyāya) · checked against the source
The Alochakagni:—The Pittam, which is located in the pupils of the eyes, is called the Alochakagni (the Pittam or fire of sight) as its office is to catch the image of any external object presented to the eyes.
Seat = pupils of the eyes (dṛṣṭi); function = apprehension of visible form; designation = ālocakāgni.
Suśruta Saṃhitā (Sanskrit mūla)Sūtrasthāna 21:10 · checked against the source
यद्दृष्ट्यां पित्तं तस्मिन्नालोचकोऽग्निरिति सञ्ज्ञा, स रूपग्रहणाऽधिकृतः;
Seat is dṛṣṭi (locative dṛṣṭyām); the function term is 'rūpa-grahaṇa-adhikṛtaḥ', appointed to the apprehension of rūpa (visible form/colour), which is narrower and more technical than 'vision'.
Aṣṭāṅga Hṛdaya (Sanskrit mūla; no public-domain English translation exists, so no translation is quoted)Sūtrasthāna 12 (Doṣabhedīya):13b-14a
Quotation withheld: nobody has yet read this quotation against its printed source, and an unchecked quotation is not published here. The passage is at this address.
Vāgbhaṭa agrees with Suśruta on both seat (dṛk-stha) and function (rūpa-ālocana), and gives the explicit etymology: it is called ālocaka FROM rūpa-ālocana. This is the one pitta subtype on which the two authorities do not disagree.
Not to be confused with
- tejas / tejaḥ-kṛt
- At Su.Sū. 15.4 the function list gives tejaḥ-kṛt, which Bhishagratna maps to eyesight. But tejas is also the general fire-element and, separately, a name for the subtle essence of pitta. Reading 'tejas' as automatically meaning ālocaka is unsafe.
- dṛṣṭi
- Dṛṣṭi is the anatomical/functional seat (roughly the pupil and visual apparatus); ālocaka is the pitta operating there. Ophthalmology chapters of the Uttaratantra discuss dṛṣṭi extensively without invoking ālocaka.
- bhrājaka-pitta
- Both are 'surface' pittas concerned with appearance, bhrājaka with the complexion being SEEN, ālocaka with the act of SEEING. The Sanskrit roots (bhrāj- to shine, ālocana to look at) are easy to swap in translation.
- prāṇa-vāta
- Prāṇa vāta is also credited with governing the sense organs including the eyes. The division is that vāta carries and enables, pitta apprehends form.
Renderings that do not hold
- "rhodopsin" / "retinal photopigment" / "the visual purple pitta". A modern speculative correlate presented as a meaning. Nothing in either mūla concerns photochemistry, and I found no peer-reviewed paper that even defends this equation, let alone tests it.
- "eyesight" as a standalone gloss. Too thin. Rūpa-grahaṇa is the apprehension of visible FORM AND COLOUR specifically, one of the five viṣayas matched to one of the five bhūtas. 'Eyesight' loses the element-to-sense-object architecture that is the reason ālocaka is a PITTA at all (tejas/agni is the element of rūpa).
- "optic nerve". An anatomical substitution. The classical seat is dṛṣṭi, the visual apparatus at the front of the eye, not a nerve tract.
Open questions
Recorded rather than resolved. Each one is something this entry cannot currently settle.
- Does any classical text distinguish an ālocaka that apprehends from an ālocaka that interprets? Some later commentarial traditions are said to split it into cakṣur-vaiśeṣika and buddhi-vaiśeṣika ālocaka, I could NOT verify this in any retrieved source and have deliberately not recorded it.
- What does Suśruta's own Uttaratantra (the ophthalmology section) say about ālocaka, if anything? I did not search it.
- Whether NAMASTE or ICD-11 TM2 carries any ālocaka-pitta entry.
How to cite this entry
Age Ayurveda Nighantu, ālocaka-pitta
, https://nighantu.ageayurveda.com/lexicon/alochaka-pitta/, CC BY 4.0.
The whole lexicon is downloadable from the index.
Machine-readable source: Markdown.
Data exported 2026-10-08.
Educational reference only. A term entry explains what a word means and how it has been translated. Nothing here is advice, and nothing here describes how any condition should be treated.