While measuring your PD at home is relatively simple, there are some common mistakes that you should avoid to ensure accurate results:
Incorrect alignment: When using a ruler, it's important to align the ruler properly with the center of your pupil. Ensure that the zero mark is aligned correctly, and that the ruler is held straight to avoid skewing the measurement.
Inconsistent measurements: Take multiple measurements and calculate the average for the most precise result.
Improper lighting: Adequate lighting is essential when measuring your PD. Insufficient lighting can lead to inaccuracies in the measurement. Ensure that the area is well-lit.
Incorrect device positioning: If you are using a phone to measure your PD, ensure that you are positioning the device at the correct distance from your face. Follow the solution's instructions closely to ensure accurate results.