bán manh
Definition
Noun (Medical Term):
- Hemianopia: A specific type of visual field loss where blindness or reduced vision affects half (either the left or right side) of the visual field in one or both eyes. It is a neurological condition often resulting from damage to the optic pathways in the brain, such as from a stroke, tumor, or injury.
Noun (Extended Medical Term):
- Hemianopsia: An alternative spelling for hemianopia, with the same meaning.
Usage Examples
- Noun:
- Bệnh nhân sau tai biến được chẩn đoán mắc chứng bán manh. (The patient was diagnosed with hemianopia after the stroke.)
- Bán manh bên phải có thể gây khó khăn khi đọc sách. (Right-sided hemianopsia can cause difficulty when reading.)
Advanced Usage
- "bán manh màu": Hemiachromatopsia. A rarer condition involving the loss of color perception in one half of the visual field.
- Tổn thương vùng chẩm đôi khi dẫn đến bán manh màu. (Occipital lobe damage can sometimes lead to hemiachromatopsia.)
Variants and Related Words
- Khiếm khuyết thị trường (n): Visual field defect. A broader term for any loss in the normal field of vision.
- Mù một phần (n): Partial blindness. A general term for vision loss that is not complete.
Synonyms
- Hemianopia: The primary medical synonym.
- Half-blindness: A descriptive, non-technical term.
- Visual field cut: A clinical term often used by healthcare professionals.
Notes on Usage
- "Bán manh" is a specialized medical term derived from Sino-Vietnamese roots ("bán" meaning half, "manh" meaning blind). It is almost exclusively used in clinical, neurological, or ophthalmological contexts.
- It is not used in everyday conversation. In general descriptions, phrases like "mất một nửa thị lực" (loss of half the vision) or "nhìn không thấy một bên" (cannot see one side) are more common.