Visual Problems
As the sense of sight is critical, patients who present with visual disturbance are often very distressed. Below is a list of common conditions that may give rise to visual problems, grouped according to symptoms.
Causes
Visual Disturbances (Flashing Lights or Floaters)
Blurring of Vision
Loss of Vision
Partial Loss
Total Loss
Acute
Figure 64 Papilloedema.
Note the blurring of the optic disc, retinal oedema, flame haemorrhages (small arrow) and exudates (large arrows).
Gradual
• Cataract
• Glaucoma
• Age-related macular degeneration
• Trachoma (Chlamydia trachomatis) • (common in underdeveloped countries)
• Onchocerciasis (nematode infection) • (common in underdeveloped countries)
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