altitudinal
Top or Bottom Half Loss
Plain-language definition
A visual-field defect that affects the top or bottom half of vision in one eye. Classic for ischemic optic neuropathy.
Expanded explanation
altitudinal is the glossary term for Top or Bottom Half Loss. On a full article page, it should be read as a condition, finding, or disease process term, not as a stand-alone diagnosis or treatment plan.
When this term appears in medical content, it may describe a diagnosis, a disease process, or a visible finding rather than a complete explanation by itself. The surrounding details usually tell you how serious it is and what might be causing it.
In eye care context
Pathology terms describe diseases, tissue changes, exam findings, or complications that can affect vision or eye comfort.
What to look for around this term
- Whether the term is being used as a confirmed diagnosis, a suspected cause, or a descriptive finding.
- How quickly the problem started, whether one or both eyes are involved, and whether pain or neurologic symptoms are present.
- What tests, images, or exam signs support the diagnosis and whether urgent care is recommended.
Questions this term may raise
- What is the most likely cause?
- Is this urgent or safe to monitor?
- What finding or test result supports the diagnosis?
- Category
- Condition, finding, or disease process
- Also written as
- No alternate forms listed.
Related glossary terms
A note on medical context
A glossary definition can explain a word, but it cannot tell you whether a symptom or test result is serious. If this term came from an article, use the full article and your clinician's guidance for context.