Peripheral vision loss affects the outer parts of the visual field and may develop gradually or suddenly. It can arise from eye, optic nerve, or brain disorders.
Key Causes
Glaucoma, retinal detachment, inherited retinal dystrophies, and advanced retinitis pigmentosa commonly reduce side vision. Neurological conditions such as stroke, tumours, or compressive optic neuropathies can also create peripheral field defects.
- People may bump into objects, struggle with mobility, or notice “tunnel vision”
- Glaucoma often progresses silently and is detected only by screening
- Sudden field loss can signal retinal detachment or vascular occlusion
- Head trauma or brain lesions may produce characteristic field patterns
Importance of Assessment
Visual field testing and eye examination help identify the underlying cause. Early diagnosis is crucial for conditions like glaucoma and retinal detachment, where timely treatment preserves remaining vision.
- Any new shadow, curtain, or sudden field change warrants urgent care
- People at risk of glaucoma should attend regular pressure and field checks
- Neurological symptoms with field loss require immediate medical attention
- Low‑vision rehabilitation can assist with established peripheral loss
