Here are a few options for the description of a WordPress `post_tag` titled “狗狗視力” (Dog Vision) in Traditional Chinese, with varying levels of detail and SEO considerations:

**Option 1: Simple and Direct**

* **Description:** 了解狗狗的視力世界和牠們如何看見這個世界。 (Learn about the world of dog vision and how they see the world.)

* **Explanation:** This is concise and easy to understand. It uses common vocabulary.

**Option 2: Slightly More Detailed (Good for SEO)**

* **Description:** 探索狗狗視力，看看牠們的色彩辨識、夜視能力和視力是否與人類相同。了解狗狗眼睛的結構和常見的眼疾。 (Explore dog vision and see how their color recognition, night vision, and overall eyesight compare to humans. Learn about the structure of a dog’s eye and common eye diseases.)

* **Explanation:** Includes relevant keywords like “色彩辨識” (color recognition), “夜視能力” (night vision), “眼睛結構” (eye structure), and “眼疾” (eye diseases). This can help with search engine optimization.

**Option 3: Focus on Benefits and Engagement**

* **Description:** 想知道你的狗狗看到的世界是什麼樣子的嗎？從顏色到距離辨識，深入了解狗狗的視覺世界，提升你和狗狗的互動與理解。 (Wondering what the world looks like to your dog? Delve into the visual world of dogs, from color to distance perception, to enhance your interaction and understanding with your dog.)

* **Explanation:** Uses a question to engage the reader, highlighting the benefits of understanding dog vision (better interaction).

**Option 4: Comprehensive and Keyword Rich (Best for SEO but might appear long)**

* **Description:** 狗狗視力：深入解析您狗狗眼中的世界。 探索狗狗的色彩辨識能力，牠們如何看到色彩，以及牠們的夜視能力與人類有何不同。 了解狗狗眼睛的結構，例如視網膜和晶狀體，以及常見的狗狗眼疾，如青光眼和白內障。 學習如何評估狗狗的視力，並了解如何維護狗狗的眼睛健康。 (Dog Vision: A deep dive into the world through your dog’s eyes. Explore a dog’s color recognition abilities, how they see colors, and how their night vision differs from humans. Learn about the structure of a dog’s eye, such as the retina and lens, and common dog eye diseases, such as glaucoma and cataracts. Learn how to assess your dog’s vision and how to maintain their eye health.)

* **Explanation:** This is the most detailed option, packed with relevant keywords and informational content. It includes specific diseases (青光眼 and 白內障). The length should be considered as it might be too much for a tag description.

**Key Considerations for Choosing a Description:**

* **Your overall content strategy:** What is the focus of your website or blog?
* **Target audience:** Who are you trying to reach? (Laypeople, veterinarians, etc.)
* **SEO goals:** Are you trying to rank highly for specific search terms?
* **Length:** While it’s better to be informative, keep it concise and readable. WordPress tag descriptions don’t have a character limit, but you may want to keep it reasonable.

When you’re setting up the tag in WordPress, be sure to save the changes. Good luck!