1. What is Diopter?

Diopter (D) is a unit of measurement of the optical power of a lens or curved mirror. In the context of Endmyopia, it represents the reciprocal of the distance (in meters) at which you can see clearly without glasses.

2. How Does the Calculator Work?

The calculator uses the diopter formula:

Where:

• \( D \) — Diopter (1/m)
• \( distance \) — Clear vision distance in meters

Explanation: The formula calculates the optical power needed to focus at a given distance.

3. Importance of Diopter Calculation

Details: Understanding your diopter measurement helps in managing myopia progression and selecting appropriate corrective lenses in the Endmyopia method.

4. Using the Calculator

Tips: Enter your clear vision distance in meters (e.g., 0.5 for 50 cm). The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal diopter value?
A: For people with normal vision, the diopter is close to 0 (infinite focal distance). Myopic individuals have negative diopter values.

Q2: How does this relate to my glasses prescription?
A: Your glasses prescription is typically written in diopters, but may include additional corrections for astigmatism.

Q3: Why is distance measured in meters?
A: Diopter is defined as the reciprocal of the focal length in meters, making meters the standard unit for this calculation.

Q4: Can I use this for contact lenses?
A: The same principle applies, though contact lens prescriptions may differ slightly from glasses prescriptions.

Q5: How accurate is this calculation?
A: This provides a basic diopter value, but professional eye exams measure multiple factors for precise prescriptions.