Types of refractive errors


  Emmetropic eyes score at "6/6"(m) or "20/20"(ft)vision

  A condition where no refractive error is present.

  A state in which the eye is relaxed and focused on an object more       than 6 meters or 20 feet away.

Snellen chart

A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen, who developed the chart in 1862. Many ophthalmologists and vision scientists now use an improved chart known as the LogMAR chart,.

Myopia or Nearsightedness:

  Eyeball is too long.

 Clear near vision and blurred distant vision, people generally squeeze their eyes to see the distant object.

 Correction by means of spherical minus lenses.

Hyperopia or Farsightesness:

  Eyeball is too short.

  Clear distance vision but suffer with eyestrain for near work.

  Correction by means of spherical plus lenses.


  A point object will not have a point image.

 Blurred vision for distance and near.

 Generally have eyestrain and headache.

Anywhere Anytime Accurate Eye testing

With e-see, you can conduct autorefraction easily, anywhere?without compromising quality.
That means you can see more patients, and help them make the best vision care choices.

Schedule a Demo