Trataka (Sanskrit trāṭaka, “to look, to gaze”) is a yogic practice of sustained, unblinking visual focus on a single point, most commonly the flame of an oil lamp or candle held at eye level a metre away. The standard classical sources are the Hatha Yoga Pradipika 2.31-32 and the Gheranda Samhita 1.53-54, which both classify trataka as one of the six purificatory practices (shatkarmas) rather than as a meditation in the strict sense. The practice continues until tears flow, at which point the eyes are closed and the after-image of the flame is held inwardly. Two to three minutes of gazing followed by an equal period of inner concentration is the typical session length for a beginner.
What the source texts actually say
The Hatha Yoga Pradipika, compiled by Svatmarama around the 15th century, lists trataka in the second chapter alongside the five other shatkarmas (dhauti, basti, neti, nauli, kapalabhati). The verse 2.32 states that the practice removes netra-roga (eye diseases), tandra (drowsiness) and acts as the gateway to shambhavi mudra, a higher concentration practice. The Gheranda Samhita, a slightly later text usually dated to the late 17th century, places trataka among the practices that lead to divya drishti (subtle perception). Neither text describes a specific object of gaze beyond “a small mark”; the use of a candle flame is a later refinement, common in modern Bihar School of Yoga and Satyananda-lineage teaching.
How to practise
- Set up: sit in a stable cross-legged posture (Sukhasana, Siddhasana or Padmasana) with the spine upright. The room should be dim and free of draught so the flame stays still.
- Object placement: a candle or ghee lamp on a small stand, the flame at the same height as the eyes, roughly an arm’s length (around 75-90 cm) in front.
- Bahiranga trataka (outer gazing): gaze steadily at the flame without blinking. Watery eyes are expected and considered the trigger to move on. Beginner sessions are 1 to 3 minutes.
- Antaranga trataka (inner gazing): close the eyes and watch the after-image of the flame appear and shift in the visual field behind the closed lids. Continue for the same duration as the outer phase.
- Closing: rub the palms warm and place them lightly over the closed eyes for thirty seconds before opening.
Practitioners are advised to do trataka after the morning bath and before breakfast, in a clean room with a stable temperature. Practice should be avoided immediately after eye fatigue, after long screen exposure, and by anyone with retinal conditions, glaucoma or epilepsy without medical clearance.
Variations beyond the candle
- Bindu trataka: gazing at a small black dot (the bindu) drawn on a white card. Used in some Krishnamacharya-lineage schools as a substitute for candle gazing when fire is impractical.
- Yantra trataka: gazing at a yantra, most often the Sri Yantra or a deity-specific yantra. Used in Tantric ritual contexts.
- Murti trataka: gazing at a deity image in temple practice; the prolonged unblinking gaze at the consecrated murti during certain pujas is a ritualised form of trataka.
- Chandra and Surya trataka: moon and sun gazing. The Hatha Yoga Pradipika mentions these obliquely. Sun gazing is widely warned against on ophthalmological grounds and is not the standard recommendation in modern teaching.
- Mirror trataka and shadow trataka: gazing at one’s own reflection or shadow, used in some Tantric lineages. These are advanced and tend to be done only under direct guidance.
An opinion on the candle-flame version
For what it’s worth, the candle-flame version of trataka is the one most worth starting with, not because it is more textually authentic (the texts say “a small mark”), but because the flame solves several practical problems at once: it stays at a fixed distance, it has a clear bright centre with a softer edge that makes the after-image vivid when the eyes close, and the live flicker keeps the gaze engaged in a way a static dot does not. Substituting a screen image of a flame is a poor swap because the screen also keeps the gaze locked at a near focal distance, which is the opposite of what the practice is trying to relax.
What the research says, and what it does not
Modern studies on trataka are mostly small, from Indian yoga research institutions, and short-duration. A 2014 trial in the Journal of Traditional and Complementary Medicine on elderly participants reported improvements in cognitive performance after a six-week trataka intervention. A 2017 study on schoolchildren reported improved selective attention and visual concentration. The studies tend to suffer from small sample sizes, absence of blinding, and active-control problems (no plausible placebo for a meditation). The mechanism most often proposed is that the sustained convergence and focal accommodation involved in the gaze acts as a mild ciliary-muscle workout, and that the eye-closure phase facilitates a parasympathetic shift. None of this is robust evidence for the strong claims (cures myopia, improves intuition) that circulate in popular writing.
Common questions
How long until benefits show up?
Daily practice of 10 to 15 minutes for two to four weeks is the conventional baseline before subjective effects (steadier concentration, reduced eye-fatigue from screen work, easier transition into meditation) are reported. The classical texts do not give a timeline; modern teaching commonly cites forty days as the threshold for a habit to take hold.
Is it safe with glasses or contact lenses?
Soft contact lenses cause discomfort when the eye dries during gazing; most teachers advise removing them. Spectacles are fine. Anyone with retinal disease, recent eye surgery, glaucoma, severe dry eye or a history of seizures should consult an ophthalmologist before practising. The watering of the eyes is harmless, but forcing the practice past the watering point can leave the eyes sore for hours.
Can children practise trataka?
Children from about age 10 can do short sessions of 30 to 60 seconds of outer gazing with adult supervision. The Bihar School of Yoga teaches a child-adapted version in residential yoga camps. The practice is not used clinically in paediatric ophthalmology, and there is no evidence that it improves refractive error, despite circulating claims to that effect.
One limitation worth noting
The strongest claims attached to trataka in modern popular writing, that it awakens the third eye, cures vision defects, develops clairvoyance, go well beyond what the classical texts assert. The Hatha Yoga Pradipika claims relief from eye diseases and drowsiness, and a preparatory role for higher meditation. That is the textual ground. The clinical research, what little exists, supports modest effects on attention and cognitive performance in small samples. Practitioners benefit most from treating trataka as a concentration drill, not as a miracle technique.
For background see Trataka on Wikipedia and the Hatha Yoga Pradipika entry for the broader shatkarma context.
