The nurse educator asks the student nurse to explain the most common causes of blindness in the United States. Which of the following options will the student nurse select as one of the top causes of blindness?

Choice A Reason: Culture is not a diagnostic test that uses an ultraviolet light source, but a laboratory test that involves growing microorganisms from a sample of body fluid or tissue. Culture can help identify the type and sensitivity of the infection-causing agent.

Choice B Reason: KOH is not a diagnostic test that uses an ultraviolet light source, but a chemical test that involves applying potassium hydroxide to a sample of skin, hair, or nail. KOH can help diagnose fungal infections by dissolving the keratin and revealing the fungal elements under a microscope.

Choice C Reason: Diascopy is not a diagnostic test that uses an ultraviolet light source, but a physical test that involves applying pressure to a lesion with a glass slide or lens. Diascopy can help differentiate between blanchable and non-blanchable lesions, such as erythema or petechiae.

Choice D Reason: Wood's is a diagnostic test that uses an ultraviolet light source, also known as a Wood's lamp or black light. Wood's can help observe color changes to the skin that are not visible under normal light, such as fluorescence or hypopigmentation. Wood's can help diagnose conditions such as tinea capitis, vitiligo, or erythrasma.

Choice A Reason: This is a correct choice. Standing next to the client when speaking is an action that the nurse should plan to take, as it helps the client hear better and see the nurse's facial expressions and lip movements. The nurse should also speak clearly and slowly, use simple words and sentences, and avoid covering their mouth.

Choice B Reason: This is a correct choice. Guiding the client away from background noise is an action that the nurse should plan to take, as it reduces distractions and interference with hearing. The nurse should also choose a well-lit and quiet place for communication and turn off any unnecessary devices or appliances.

Choice C Reason: This is an incorrect choice. Providing a copy of the instructions printed in Braille is not an action that the nurse should plan to take, as it is not helpful for clients with hearing loss. Braille is a system of raised dots that represents letters and numbers for people who are blind or visually impaired. The nurse should provide a copy of the instructions printed in large font or use pictures or diagrams to supplement verbal information.

Choice D Reason: This is a correct choice. Repeating any phrases that the client misunderstands is an action that the nurse should plan to take, as it ensures comprehension and clarification of important information. The nurse should also ask open-ended questions, encourage feedback, and summarize key points at the end of the conversation.