20/100 Vision Simulator

Interactive vision simulator — drag the slider to compare eyesight levels.

Drag the slider to compare 20/100 vision with 20/20 - details beyond a short distance look heavily blurred without glasses.

Severe distance blur simulation of 20/100 vision on a city street.
Status: 20/100
20/20 (Perfect) 20/200 (Blind)

Drag slider to compare

With 20/100 vision, you see at 20 feet what someone with 20/20 sees at 100 feet.

This simulator is for educational purposes only and does not replace a professional eye exam.

Estimated Prescription Converter

20/100 Vision ≈ -2.50 to -3.50 Diopters

This is moderate-to-severe myopia and usually needs correction for daily distance tasks.

Prescriptions around this range often sharpen distance vision a lot, but exact diopters vary - get an eye exam for your true numbers.

Shop Glasses

Daily Life Impact Check

🚗 🔴 Restricted

Driving

Corrective lenses required by law.

📖 🟡 Difficult

Reading

May need large print or zooming.

✈️ 🔴 Disqualified

Pilot License

👁️ 🟢 No

Legally Blind?

Boundary is 20/200.

20/100 vision is moderate-to-severe myopia. Without correction, faces and road signs are very blurry, but glasses or contacts typically restore safe clarity.

20/100 on a Snellen chart means you see at 20 feet what a person with 20/20 eyesight could see at 100 feet.

  • Meaning: 20/100 is severe distance blur.
  • What you'll notice: most outdoor detail is unclear without correction.
  • Next step: strong glasses or contacts can make a big difference.
  • Street signs and traffic signals look heavily blurred until very close.
  • Recognizing people across a room is hard without correction.
  • Outdoor navigation and sports feel challenging unaided.

20/100 is severe distance blur. Most people at this level need correction for nearly all outdoor and distance tasks.

20/100 is not sufficient for safe driving without correction. If your vision does not improve with glasses, speak with an eye-care professional about next steps.

Severe myopia is a common cause, but cataracts or retinal conditions can also contribute. A full exam is important if 20/100 is new or changing.

There is no exact one-to-one conversion between Snellen scores and glasses strength, but 20/100 often aligns with roughly -2.50 to -3.50 diopters for simple myopia.

  • Astigmatism or focusing issues can shift this range.
  • Treat any number here as a rough estimate only.

The right prescription can usually improve distance clarity significantly.

An eye exam is recommended if you notice:

  • you need to squint to read distance details
  • night driving feels stressful because of blur or glare
  • you avoid activities that rely on clear distance vision

People with 20/100 often notice problems in:

  • Commuting or driving without missing important road details.
  • Shopping or traveling where signs are your main guide.

The right prescription can usually improve distance clarity a lot.

Quick comparison to nearby levels:

LevelCompared to 20/100
20/80Clearer than 20/100
20/100Current level
20/200More blur than 20/100

This simulator is for education only. Screen size, viewing distance, lighting, and eye health all affect what you see. If you are worried about your vision, please schedule a professional eye exam.

Last updated: December 12, 2025

Common Questions about 20/100

20/100 is a significant distance blur. You may struggle to read road signs or recognize faces from far away without glasses.

In most regions, 20/100 without correction does not meet driving standards. Glasses or contacts are needed for legal and safe driving.

No. Legal blindness is usually defined as 20/200 or worse, but 20/100 is still a severe reduction in distance vision.