Emperor Optics Sembawang

Emperor Optics Sembawang

Astigmatism

Written on 10:32 PM by Emperor Optics Sembawang

An eye with Astigmatism usually produces 2 focusing point at different distances. This can be a result of a non-spherical optical medium such as an irregular cornea surface. Correction of this refractive error is most commonly done with spectacles or contact lenses. Uncorrected astig will produce fuzzy images, due the eye inability to focus on fine details.

Long Sightedness (Hyperopia)

Written on 10:49 PM by Emperor Optics Sembawang

Hyperopia is a condition of the eye where one experience difficulty in focusing objects at near. The nearer an object is to the eye of a hyperope, the blurrer the object will become. Causes of hyperopia may be too short an eyeball or lens of the eye are not round enough.

A very high degree of long sightedness will have difficulty in focusing objects at all distances. Most common correction form will be spectacles or contact lenses. Hyperopia is not to be mistaken with presbyopia although both condition will produce blur imsages of objects at near.

Short Sightedness (Myopia)

Written on 11:05 PM by Emperor Optics Sembawang





Myopia is a refractive defect of the eye where one can see clearly at near but experiences blur when viewing distant objects. It can be a result of many causes such as a steeper cornea, or a eyeball that is too long.

The most common form of myopic correction is spectacles or contact lenses. Theses corrective devices will help the eye to focus light back onto the retina, resulting in a sharper clearer vision.

Generally, classification of myopia can be.

Mild Myope = < -3.00
Diopter Moderate Myope = > -3.00 Diopter but < -6.00 Diopter
High Myope = > -6.00 Diopter


Shown above is an example on how a myopic eye sees the world without correction.