# 20-20-20 Eye Care Reminder

Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds to reduce eye strain

> Canonical page: https://elysiatools.com/en/tools/eye-care-20-20-20

- **Category:** Health

- **Keywords:** eye care, 20-20-20 rule, eye strain, vision protection, break reminder, health, wellness, eye exercise

## Overview

The 20-20-20 Eye Care Reminder is a health-focused utility designed to help you mitigate digital eye strain by prompting regular, short breaks during long periods of screen time.

## Inputs

- **Work Minutes** (number): Minutes of work time
- **Break Seconds** (number): Seconds of break time
- **Break Action** (textarea): What to do during break (e.g., Look at something 20 feet away)

## When to use

- During long work sessions at a computer or laptop.
- When you notice symptoms of eye fatigue, such as dryness or blurred vision.
- While studying or reading digital documents for extended periods.

## How it works

- Set your preferred work interval in minutes to define how often you want to be reminded.
- Specify the duration of your break in seconds to ensure you have enough time to refocus.
- Customize the break action message to remind yourself of the specific task, such as looking at a distant object.
- Start the timer and follow the prompts to maintain healthy visual habits throughout your day.

## Use cases

- Office workers maintaining focus during deep work sessions.
- Students preparing for exams with long hours of digital reading.
- Gamers looking to maintain eye health during extended play sessions.

## Frequently asked questions

### What is the 20-20-20 rule?

It is a technique where you look at something 20 feet away for 20 seconds every 20 minutes to reduce eye strain.

### Can I change the length of the work interval?

Yes, you can adjust the work interval between 1 and 60 minutes to suit your workflow.

### Is this tool effective for preventing eye strain?

Yes, regular breaks help relax the focusing muscles in your eyes and prevent the fatigue associated with prolonged screen use.

### How long should the break last?

The tool defaults to 20 seconds, which is the recommended time to allow your eyes to fully relax.

### Do I need to install any software?

No, this is a web-based utility that runs directly in your browser.

## Related tools

- [A-a Gradient (Alveolar-Arterial O₂)](https://elysiatools.com/en/tools/a-a-gradient-calculator): Calculate the alveolar-arterial O₂ gradient to distinguish hypoxemia causes. PAO₂ = FiO₂×(P_atm−47) − PaCO₂/0.8; A-a = PAO₂ − PaO₂. Normal ≈ (Age+10)/4. Elevated → V/Q mismatch, shunt, diffusion impairment. Derived from StatPearls, LITFL, Cornell PICU, and Martin 1999. Not medical advice.
- [Alveolar Gas Equation (PAO₂ Calculator)](https://elysiatools.com/en/tools/alveolar-gas-equation): Calculate PAO₂ = FiO₂ × (P_atm − 47) − PaCO₂ / RQ. Defaults: P_atm 760 mmHg (sea level), RQ 0.8. Gives a directional hint vs expected ~100 mmHg. For full A-a gradient interpretation use a-a-gradient-calculator. Derived from StatPearls, LITFL, Cornell PICU, and West. Not medical advice.
- [Apgar Score (Newborn 1 & 5 min)](https://elysiatools.com/en/tools/apgar-score): Calculate the Apgar score to assess newborn condition at 1 minute and 5 minutes after birth. Five signs are each scored 0–2 at both time points: Appearance (skin color), Pulse (heart rate), Grimace (reflex irritability), Activity (muscle tone), and Respiration. Each time point totals 0–10. Interpretation: 7–10 reassuring; 4–6 moderately abnormal (may need assistance); 0–3 critically low (immediate resuscitation). The tool reports both the 1-min and 5-min scores, the change (delta), and per-time-point interpretation. A 5-min score, and especially the change from 1 to 5 min, indicates response to resuscitation; persistent low 5-min scores warrant continued resuscitation and reassessment at 10 min. Derived from Apgar 1953, reaffirmed by ACOG/AAP. The Apgar is a physiologic snapshot at a moment in time and is not, by itself, a marker of asphyxia or long-term neurologic outcome. Not medical advice.
- [OD600 to CFU/mL Converter (Calibration Curve Slope)](https://elysiatools.com/en/tools/bacterial-growth-od): Convert OD600 to CFU/mL via a calibration slope with organism presets, blank correction, dilution handling, and linearity warnings.
- [Henderson-Hasselbalch Equation (pH / HCO₃⁻ / PCO₂)](https://elysiatools.com/en/tools/bicarbonate-ph-conversion): Solve any one of pH/HCO₃⁻/PaCO₂ from the other two via pH = 6.1 + log10(HCO₃⁻/(0.03×PaCO₂)). Reports linear Henderson \[H⁺\] cross-check. Derived from Henderson 1908, Hasselbalch 1916, Siggaard-Andersen 1974, LITFL, StatPearls, Berend 2016. Not medical advice.
- [Cardiac Index Calculator (CI)](https://elysiatools.com/en/tools/cardiac-index-calculator): Compute CI = CO / BSA with BSA from the Mosteller formula √(height × weight / 3600). Normal 2.5–4.0 L/min/m². Derived from Mosteller NEJM 1987, Du Bois 1916, StatPearls, LITFL. Not medical advice.
- [Cardiac Output by Fick Principle (CO)](https://elysiatools.com/en/tools/cardiac-output-fick): Compute CO = VO₂ / (CaO₂ − CvO₂) / 10 (L/min) with the Fick principle. Requires PA-catheter mixed venous samples. VO₂ defaults to 250 mL/min. Derived from Fick 1870, StatPearls, LITFL, West, Leach 2002. Not medical advice.
- [CURB-65 Score (Pneumonia Severity)](https://elysiatools.com/en/tools/curb-65-score): Calculate the CURB-65 score to assess community-acquired pneumonia (CAP) severity and guide the site of care. Each component scores 1 point: Confusion (new-onset disorientation), Urea > 7 mmol/L (BUN > 20 mg/dL), Respiratory rate ≥ 30/min, Blood pressure (systolic < 90 OR diastolic ≤ 60 mmHg), and Age ≥ 65. Range 0–5. Interpretation: 0–1 low risk (likely outpatient; 30-day mortality ~1.5–2.4%), 2 moderate (consider admission or supervised discharge, ~9.2%), 3–5 high risk (hospital admission; consider ICU for 4–5; mortality rises to ~57% at score 5). Endorsed by the British Thoracic Society. Derived from Lim et al. 2003 (Thorax). Not medical advice.

## Samples

- [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
- [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion
- [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion
- [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion