Significance of Night-blindness
Night-blindness, or difficulty seeing in low light, is a key symptom of conditions like retinitis pigmentosa, Cone Rod Dystrophy, and xerophthalmia. It arises from photoreceptor degeneration or vitamin A deficiency. Ayurveda mentions treatments like Vatsanabh and collyrium, while historically, Boerhaavia diffusa and herbal mixtures were used. It is also a feature of Doshandha. The symptom often worsens as the underlying disease progresses, potentially leading to tunnel vision and eventual blindness.
Synonyms: Nyctalopia, Retinitis
In Dutch: Nachtblindheid; In Finnish: Yösokeus; In Spanish: Ceguera nocturna; In German: Nachtblindheit
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
Hindu concept of 'Night-blindness'
In Hinduism, Night-blindness, or Doshandha, impairs vision in low light, linked to conditions like retinitis pigmentosa and Cone Rod Dystrophy. It's treatable with medicines like collyrium and Vatsanabh.
From: Journal of Ayurveda and Integrated Medical Sciences
(1) This is a condition where the ability to see in low light conditions is impaired, which is a symptom of retinitis pigmentosa, and it is also a special feature of Doshandha.[1] (2) This phrase is a main clinical feature of retinitis pigmentosa, and is a key symptom associated with the condition, as described in the provided text regarding the disease.[2] (3) This is a health condition that can be treated by Vatsanabh, highlighting the medicinal uses, and it is one of the aspects that should be considered.[3] (4) This condition is a symptom that occurs later in Cone Rod Dystrophy and is characterized by the inability to see well in low light or darkness, often worsening as the disease progresses, and is a symptom of non syndromic CRD.[4]
From: Sushruta Samhita, volume 4: Cikitsasthana
(1) A condition affecting vision in low-light conditions, treatable with specific eye medicines like collyrium.[5]
From: Journal of Ayurvedic and Herbal Medicine
(1) Alternanthera sessilis is used to treat night blindness, leprosy and swelling.[6]
The concept of Night-blindness in local and regional sources
Night-blindness, or nyctalopia, is the inability to see well in low light. The text defines it as a condition affecting vision in darkness or dim lighting.
From: Triveni Journal
(1) A condition referred to in the text, indicating an inability to see well in low light conditions.[7]
The concept of Night-blindness in scientific sources
Night-blindness is impaired vision in low light, linked to xerophthalmia from vitamin A deficiency and retinitis pigmentosa, where photoreceptor degeneration occurs. Herbal remedies have been used, and it can precede other retinal issues.
From: South African Family Practice
(1) This is a condition that can be caused by a deficiency of vitamin A, and is one of the initial signs of xerophthalmia.[8] (2) Night blindness is a symptom of retinitis pigmentosa, along with tunnel vision and eventual blindness, due to dystrophy of the photoreceptors.[9]