How Light and Dark Colored Eyes Differ in Anatomy, Vision, and Health Risks
Eye color ranges from the darkest shades of brown to the lightest hues of blue and gray. The pigmentation responsible for determining eye color also impacts the anatomy and function of the eyes in various ways.
From differences in sharpness and sensitivity to certain health conditions, research over the years has unveiled intriguing distinctions between dark and light colored eyes.
Melanin Content Determines Eye Color
Eye color is decided by how much of the pigment melanin is present in the iris during fetal development. The more melanin, the darker the eye color turns out to be.
The absence of melanin produces blue eyes. Low to moderate melanin levels result in green, hazel and amber eyes. High concentrations of melanin appear brown or black.
Anatomical Variations
Higher
FAQs
What is the best pillow material for sinus issues?
Memory foam or latex pillows with allergen-resistant removable covers make excellent choices for minimizing exposure to dust mite allergens and irritants that can trigger sinus problems.
Which sleep position is best for sinus drainage?
Sleeping with your head elevated at approx 30 degrees allows mucus to drain downward with the help of gravity. Side sleeping also takes pressure off congested sinus regions unlike back sleeping.
How do I know if my pillow is too old and replacing it will help?
Replace any pillow older than 18 months old. Signs your pillow needs replacing include visible stains, bad odors, lumpiness, loss of support and increased allergy or sinus problems.
Can using too many pillows obstruct my sinuses?
Yes, improper neck alignment from too many pillows can close nasal airways making congestion worse. Find the right loft for your sleep position without overdoing support pillows.
Will hydration and humidifiers also improve nighttime sinus problems?
Yes, drinking plenty of fluids keeps nasal membranes moist, while running a humidifier can prevent dryness that thickens mucus secretions blocking sinus drainage at night.
Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment regimen.
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