Skip to content
Forms & Policies
Child Health Library
Online Bill Pay
Patient Portal
Forms & Policies
Child Health Library
Online Bill Pay
Patient Portal

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Diopter

The diopter is a unit of measurement used to describe how well a person sees.

Farsightedness is measured in positive diopters, and nearsightedness is measured in negative diopters. Astigmatism is measured in diopters that can be either positive or negative.

With diopters, the farther a measurement is from 0, the more severe the refractive error. For example, if a person has -4 diopters of nearsightedness, it means that the farthest point you can see clearly is one-fourth of a meter (about 10 inches) from your eye.

Main Street Pediatrics now offers the latest Pfizer COVID-19 vaccine and the flu vaccine, recommended by the CDC and the American Academy of Pediatrics for ages 6 months and above. Please call our office to schedule a COVID-19 vaccine visit for your child. For more details read our recent blog post.

COVID-19 Update