13/11/2025
Vision 20/20 — What It Really Means
🔹 Meaning:
“20/20 vision” describes normal visual clarity or sharpness measured at a distance of 20 feet.
If you have 20/20 vision, you can see what a person with normal eyesight can see at 20 feet.
🔹 Other Visual Acuities:
20/40: You must be at 20 feet to see what normal eyes see at 40 feet.
20/100: You must be at 20 feet to see what normal eyes see at 100 feet.
20/15: Better than average vision (you see at 20 feet what others see at 15).
🔹 Factors Affecting Vision:
Refractive errors (Myopia, Hypermetropia, Astigmatism)
Eye diseases (Cataract, Macular degeneration, Glaucoma)
Poor lighting or prolonged screen exposure
Dry eyes or uncorrected prescriptions
🔹 Maintaining 20/20 Vision:
Regular eye check-ups (every 6–12 months)
Follow proper screen time hygiene (20-20-20 rule)
Eat eye-healthy foods (carrots, spinach, fish oil)
Protect eyes from UV rays and blue light
Manage systemic diseases like diabetes.
🔹 Fun Fact:
Even if your vision isn’t 20/20, glasses, contact lenses, or refractive surgery can help achieve it!
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