Q. How many pixels for a human eye?
Doctor Answer is medically reviewed by SecondMedic medical review team.
To understand how many pixels a human eye is capable of perceiving, you first have to consider the structure of the human eye.
The fovea centralis, located near the center of the retina, is where most of your vision takes place; it’s responsible for detailed vision tasks such as reading and visualizing objects. The fovea is made up of photoreceptors called cones which are about 5-6 micrometers in size. Comparatively speaking this means that there are roughly 4.3 million cones at full resolution in each foveal field!
Using these figures we can estimate how many pixels exist within our vision capacity by multiplying the number of cones mentioned above by 1 megapixel (one million pixels), resulting in an impressive 4.3 megapixels!
But what's even more interesting than that figure is that your eyes also possess something called blur detection – essentially meaning they can detect changes even smaller than one pixel, allowing you to sense motion direction and speed with incredible accuracy! So while we may not be able to perceive every pixel individually, our eyes understand them collectively much better than any camera lens ever could - making us all visual super heroes!
Q. Hello Doctor, from past 3 weeks I have too much dandruff problem and it cause hair loss will you suggest any best solution for this?
Doctor Answer is medically reviewed by SecondMedic medical review team.
Answered by Secondmedic ExpertDealing with excessive dandruff leading to hair loss can be frustrating, but there are effective ways to address this issue. Here's what you can do:
1. Switch to a Gentle Shampoo: Opt for shampoos specifically designed for dandruff, containing ingredients like ketoconazole, zinc pyrithione, coal tar, or selenium sulfide. Use these shampoos regularly to reduce dandruff buildup.
2. Scalp Massage: Gently massage your scalp while shampooing to help remove flakes and improve blood circulation, which can promote healthier hair growth.
3. Avoid Hot Water: Wash your hair with lukewarm water instead of hot water, as hot water can dry out your scalp and worsen dandruff.
4. Balanced Diet: Ensure you're eating a balanced diet rich in vitamins and minerals essential for healthy hair and scalp, such as omega-3 fatty acids, zinc, and B vitamins.
5. Manage Stress: Stress can exacerbate dandruff problems. Practice stress-relief techniques like meditation, yoga, or regular exercise to help manage stress levels.
6. Apple Cider Vinegar Rinse: Consider using diluted apple cider vinegar as a rinse after shampooing. It can help restore the scalp's pH balance and reduce dandruff.
7. Consult a Dermatologist: If the issue persists despite trying home remedies or over-the-counter solutions, seek advice from a dermatologist. They can provide a personalized treatment plan tailored to your specific scalp condition.
Remember, consistency is key when dealing with dandruff. Give these remedies some time to work, as immediate results might not always occur. It's essential to find what works best for your scalp, so don't get discouraged if you don't see immediate improvements.
Taking care of your scalp health not only addresses dandruff but also aids in reducing hair loss associated with this issue. Feel free to incorporate these tips into your routine and observe how your scalp responds. If the problem persists or worsens, seeking professional guidance is always recommended.
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