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 In case of Myopia, the following is seen: and explain in detail?
Ans. (a) Large optic discRef: A.K. Khurana 6th ed. /38MYOPIA* Also known as short-sightedness.* It is a type of refractive error in which parallel rays of light coming from infinity are focused in front of the retina when accommodation is at rest.* Myopic patients have long eyeballs.Fundus Examination of Myopia* The optic disc appears large and pale and at its temporal edge a characteristic myopic crescent is present* Degenerative changes in retina and choroid are common in progressive myopia* Posterior staphyloma at posterior pole may be apparent due to ectasia of the sclera. Degenerative changes in vitreous include liquefaction, vitreous opacities, and posterior vitreous detachment (PVD).