20/30 Vision Simulator

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

Use the slider to compare 20/30 vision with 20/20 - distant signs may look slightly soft without glasses.

Mild distance blur simulation of 20/30 vision on street signs.
Status: 20/30
20/20 (Perfect) 20/200 (Blind)

Drag slider to compare

With 20/30 vision, you see at 20 feet what someone with 20/20 sees at 30 feet.

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

Estimated Prescription Converter

20/30 Vision ≈ -0.50 to -1.25 Diopters

This is mild myopia and is usually easy to correct.

Many people with 20/30 improve to 20/20 with a light prescription in this range, but exact diopters vary by person.

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.

20/30 vision is a mild reduction in distance clarity. You may notice blur on faraway text, and a light prescription can restore crisp detail, especially for driving.

20/30 on a Snellen chart means you see at 20 feet what a person with 20/20 eyesight could see at 30 feet.

  • Meaning: 20/30 is mild distance blur.
  • What you'll notice: signs and faces soften at range.
  • Next step: many people use light glasses for sharper driving vision.
  • Distant signs look slightly soft until you get closer.
  • Faces across a room lose small detail.
  • You may feel eye strain after distance-focused work.

20/30 is mild distance vision loss. Near tasks usually stay clear, but you may notice extra effort for road signs, screens, or faces farther away.

20/30 often still meets driving standards, but many people prefer glasses for crisper distance vision, especially for night driving.

Mild myopia and/or astigmatism are the usual causes. Dry eye and fatigue can make blur feel worse.

There is no exact one-to-one conversion between Snellen scores and glasses strength, but 20/30 often aligns with roughly -0.50 to -1.25 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.

Consider an eye exam if you notice:

  • slight distance softness that bothers you in daily life
  • extra squinting in low light
  • eye strain after long distance-focused tasks

A light prescription may help, especially for driving or night scenes.

Quick comparison to nearby levels:

LevelCompared to 20/30
20/25Clearer than 20/30
20/30Current level
20/40More blur than 20/30

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 20/30

20/30 vision means you can see at 20 feet what someone with 20/20 vision can see at 30 feet. It is a mild reduction in distance sharpness.

Not always, but glasses can make distant details clearer. Many people choose a light prescription for driving, sports, or classroom work.

20/30 often corresponds to mild myopia, commonly around -0.50 to -1.25 diopters. Only an eye exam can confirm your exact numbers.