Revision is an essential part of preparing for the UPSC examination, especially when it comes to current affairs-related topics and their relevance to the geography optional. To revise these topics effectively, follow the steps outlined below:

1. **Organize your study material**: Gather all relevant study materials, including newspapers, magazines, websites, and textbooks, and arrange them in a systematic manner. This will make it easier for you to access the required information during revision.

2. **Create a study plan**: Develop a study plan that allocates specific time slots for revising current affairs and geography-related topics. Divide your revision time into smaller sessions to maintain focus and prevent burnout.

3. **Identify key topics**: Make a list of important current affairs topics that have a direct or indirect connection to geography. This could include environmental issues, climate change, natural disasters, international relations, regional conflicts, and socio-economic factors affecting different regions.

4. **Categorize the topics**: Divide the identified topics into sub-categories based on their relevance to different aspects of geography, such as physical geography, human geography, economic geography, and geopolitical issues. This will help you focus on specific areas during revision.

5. **Highlight key points**: While revising, highlight the key points, statistics, and facts related to each topic. This will make it easier to recall the information during the examination. Additionally, annotate your study material with relevant diagrams, maps, and illustrations to enhance your understanding.

6. **Make connections**: Look for connections between current affairs topics and geography concepts. Analyze how geographical factors influence the occurrence of events or phenomena discussed in the news. For example, you can examine how climate change affects the frequency and intensity of natural disasters, or how geopolitical tensions impact regional development.

7. **Practice answer writing**: To reinforce your understanding and improve your exam preparation, practice writing answers to questions that integrate current affairs and geography. This will help you develop a coherent and well-structured approach to answer questions in the examination.

8. **Stay updated**: Continuously update yourself with the latest news and developments in both current affairs and geography. Regularly read newspapers, follow reputable news websites, and subscribe to reliable magazines to stay informed about the latest events and their geographical implications.

By following these steps, you can effectively revise current affairs-related topics and their relevance to geography optional. Remember to stay consistent, focused, and disciplined throughout your revision process. Good luck!