You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Macular sparing is seen in a lesion of and explain in detail?
Retention of macular function in spite of losses in the adjacent visual field. Example: In homonymous hemianopia due to an occipital lobe lesion (e.g. an interference in the blood flow in the middle cerebral aery). Reason: Macula has a dual blood supply of both MCA and PCA Visual Field Defects - Left Hemianopia with Macular Sparing. Left hemianopia with macular sparing is a paial loss of vision in the same half of both eyes with the center, the macula, spared. A lesion of both the dorsal radiation and Meyer&;s loop in the occipital lobe causes this blindness Reference: khurana 6th edition pg 677