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A cataract is a progressive, painless clouding of the eye's natural crystalline lens. It occurs when proteins in the lens break down and clump together, which prevents light from focusing sharply on the retina, leading to blurred or obscured vision. Most cataracts are age-related, although they can be triggered by injury, metabolic disease, or medication.
Common symptoms
Cloudy, blurred, or dim vision
Increased difficulty with night vision
Sensitivity to light and glare (especially from oncoming headlights)
Seeing 'halos' around lights
Frequent changes in eyeglass or contact lens prescriptions
Fading or yellowing of colors
Double vision in a single eye
Temporary improvement in near vision, known as 'second sight'
Possible causes
Aging (primary cause due to protein degradation)
Diabetes mellitus (metabolic acceleration)
Eye trauma or previous ocular surgery
Long-term use of corticosteroid medications
Excessive exposure to ultraviolet (UV) radiation
Smoking and heavy alcohol consumption
Genetics and congenital factors
Radiation treatment for other medical conditions
Medical treatment
Prescription eyewear or magnifying lenses (early management)
In Ayurveda, cataracts are primarily understood within the framework of 'Timira', 'Kacha', and 'Linganasha'. These represent progressive stages of lens opacity. According to the Sushruta Samhita (Uttaratantra), the condition begins when vitiated Doshas (humors) enter the Patalas (layers) of the eye. The first stage, Timira, causes blurred vision; the second, Kacha, involves a noticeable staining of the vision; and the final stage, Linganasha, corresponds to a mature cataract where the lens becomes fully opaque, leading to 'blindness that can be pierced' (surgically curable Kaphaja Linganasha). The pathology is viewed as a metabolic and degenerative process where Kapha accumulation creates the 'cloud', while Vata drives the degenerative aging of the lens tissues.
Ayurvedic dietary guidelines
Increase intake of 'Chakshushya' (vision-promoting) foods like Cow Ghee (Ghrita), Honey, and Green Gram (Mudga).
Consume 'Triphala' internally with honey or ghee at night to support ocular metabolism.
Include Vitamin A-rich Ayurvedic sources like Moringa (Shigru), Amaranth (Chivika), and Indian Gooseberry (Amalaki).
Avoid 'Vidahi' (burning/pungent) foods, excessive salt, and sour substances like curd or vinegar which aggravate Pitta and Kapha.
Use Rock Salt (Saindhava Lavana) instead of common table salt.
