Final answer:
Amaurosis fugax is a symptom characterized by a temporary loss of vision in one eye, not a common clinical finding. Bilateral hemianopia is a loss of peripheral vision due to pressure on the optic chiasm from pituitary gland expansion, differentiating it from amaurosis fugax. Other vision issues like AMD and astigmatism are distinct conditions affecting vision differently.
Step-by-step explanation:
Amaurosis fugax is often a symptom rather than a condition itself and it is not a common clinical finding. Bilateral hemianopia is a unique clinical presentation where a patient experiences loss of lateral peripheral vision but retains superior and inferior peripheral fields, discerning it from tunnel vision. This can happen due to a pituitary gland growth pressing against the optic chiasm, disrupting signal transmission, while axons projecting to the same side of the brain remain unaffected.
Conditions such as age-related macular degeneration (AMD), idiopathic juxtafoveal retinal telangiectasia, and astigmatism also relate to vision deficits, though they are distinct from amaurosis fugax. Understanding the underlying causes of these conditions and their symptoms is crucial for accurate diagnosis and treatment.