Final answer:
Sudden and severe vision loss is an eye symptom that should prompt immediate referral to an ophthalmologist. This could indicate serious conditions such as retinal detachment or optic neuritis, which require timely evaluation and treatment to prevent permanent vision loss.
Step-by-step explanation:
One eye symptom that should prompt immediate referral to an ophthalmologist is sudden and severe vision loss. This could indicate a serious underlying condition such as retinal detachment or optic neuritis. Prompt referral to an ophthalmologist is important as these conditions may require urgent treatment to prevent permanent vision loss.
For example, retinal detachment occurs when the light-sensitive layer at the back of the eye separates from the underlying tissue. Symptoms include sudden flashes of light, floaters in the vision, and a curtain or shadow covering part of the visual field. This is a medical emergency that requires immediate evaluation and treatment by an ophthalmologist.
Another condition that may cause sudden vision loss is optic neuritis, which is inflammation of the optic nerve. This condition is commonly associated with multiple sclerosis and can cause blurry vision, blind spots, and pain with eye movement. Immediate referral to an ophthalmologist is necessary to determine the cause and appropriate management.