What is the clinical name of vision loss without any known cause searchable
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clinical term vision loss no identifiable cause non-organic functional
The clinical name you're looking for is:
Non-Organic Visual Loss (NOVL)
Also called Functional Visual Loss (FVL).
Here is a clear breakdown of the key terms used for this condition:
| Term | Notes |
|---|---|
| Non-Organic Visual Loss (NOVL) | The most widely preferred modern clinical term |
| Functional Visual Loss (FVL) | Used interchangeably with NOVL; preferred by some clinicians |
| Psychogenic Visual Loss | Older term, emphasizes psychological origin |
| Hysterical Amblyopia / Hysterical Visual Loss | Historical term, now largely abandoned due to stigma |
| Medically Unexplained Visual Loss (MUVL) | Used in neuro-ophthalmology literature |
| Conversion Disorder (visual type) | The DSM-5 psychiatric classification when symptoms are subconscious |
| Malingering | When the vision loss is consciously fabricated for secondary gain |
| Factitious Disorder | When consciously feigned but without obvious external incentive |
Key Clinical Points
- NOVL is a decrease in visual acuity and/or visual field not caused by any organic lesion - the eyes are structurally normal on examination
- It can range from mild blurring to complete blindness
- Visual field defects can include constricted ("tunnel vision") or other patterns
- Over 50% of NOVL patients have a concurrent psychiatric diagnosis (depression, anxiety)
- It sits on a spectrum from subconscious (conversion disorder, somatization) to conscious (malingering, factitious disorder)
- Organic and non-organic disease can coexist - ruling out organic pathology is mandatory before diagnosing NOVL
So the most searchable, current clinical term is Non-Organic Visual Loss (NOVL) or Functional Visual Loss (FVL), as cited by EyeWiki and StatPearls/NIH.
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