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 The Investigation To Predict The Visual Outcome After Phacosurgery is - and explain in detail?
Answer- B. Potential Acuity meterPotential acuity meters (PAMS) measure the VA that the patient is likely to achieve once there are no more opacifications of the ocular media of the eye.These clear areas are used to project a target (numbers, letters or stripes) onto the retina using a narrow light beam.PAM measurements have been shown to be especially reliable if patients with nuclear sclerotic cataracts are measured, but may be dificult if a posterior subcapsular cataract is present.