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 Highest visual resolution is seen in retina at: and explain in detail?
The macula lutea contains a central depression, the fovea centralis or foveola, with a diameter of 0.4 mm, where visual resolution is highest. Here, all elements except pigment epithelium cone photoreceptors are displaced laterally. The minute size of the foveola is the reason why the visual axes must be directed with great accuracy in order to achieve the most discriminative vision. Ref: Gray's anatomy 40th edition, Chapter 42.