As an expert in the field of ophthalmology, I can provide you with a comprehensive understanding of why you might be experiencing flashing lights when you close your eyes. This phenomenon is known as phosphenes, which are the perception of light without any actual light entering the eye. They can occur due to various reasons, and it's important to consider the context in which they are experienced.

Step 1: Understanding Phosphenes
Phosphenes can be triggered by mechanical stimulation of the retina. When you close your eyes and gently press on them, you might notice small flashes of light or colors. This is because the physical pressure is stimulating the cells in the retina, which then send signals to the brain that are interpreted as light. This is a normal physiological response and is not usually a cause for concern.

Step 2: Identifying Potential Causes
However, if you're experiencing phosphenes without any apparent reason, such as during normal blinking or when there's no pressure applied to the eyes, it could be indicative of an underlying issue. Conditions like retinal tension, a tear, or detachment can cause the retina to pull or experience tension, leading to flashes of light. These conditions require immediate medical attention as they can lead to vision loss if not treated promptly.

Step 3: When to Seek Medical Attention
It's crucial to consult with an eye care professional if you notice the following:
- Frequent or persistent flashes of light, especially if they are accompanied by floaters or a sudden increase in the number of floaters.
- Flashes of light that are accompanied by a loss of peripheral vision or a dark curtain over your field of vision.
- Any sudden changes in vision or symptoms that affect your daily life.

**Step 4: Preventive Measures and Healthy Habits**
While phosphenes can be a normal response to eye pressure, maintaining good eye health is essential. Here are some general tips:
- Regular eye exams can help detect any potential issues early.
- Protect your eyes from excessive screen time and take breaks to rest your eyes.
- Wear protective eyewear during sports or activities that could cause eye injury.
- Maintain a healthy lifestyle with a balanced diet rich in vitamins and minerals that support eye health.

In conclusion, while experiencing phosphenes when closing your eyes can be a normal occurrence, it's important to be aware of the circumstances and to seek medical advice if there are any concerning symptoms. It's always better to err on the side of caution when it comes to your vision.

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The physical pressure being put on the retina stimulates it and generates phosphenes and light. You can test this by closing your eyes and gently pushing on your eye. ... Tension or pulling on the retina, like that which happens when the eye is experiencing retinal tension, a tear or detachment can cause flashes.Jun 24, 2015read more >>