Mrs. Orlando has been noticing flashes of light and tiny specks in her right visual field. When she begins to see a “veil” floating before her right eye, she makes an appointment to see the eye...

Mrs. Orlando has been noticing flashes of light and tiny specks in her right visual field. When she begins to see a “veil” floating before her right eye, she makes an appointment to see the eye doctor. What is your diagnosis? Is the condition serious? Explain.

David Norris, an engineering student, has been working in a nightclub to earn money to pay for his education. After about eight months, he notices that he is having problems hearing highpitched tones. What is the cause-and-effect relationship here?