Detailed Information on Different Types of
There are 7 different types of
astigmatism vision disorder,
based on two eye characteristics.
unusually shaped cornea causes astigmatism vision disorder,
which can be manifested in 7 differenty ways of astigmatism.
An eye with astigmatism has an unusually shaped cornea. Thus the light doesn’t enter the eyes correctly, making the vision blurry and hazy. It
can affect both close and distant vision. Astigmatism vision is a common eye disorder affecting 3 million people every
year. If you or any of your loved ones are detected with astigmatism, this article is a perfect read for
Comprehensive information is compiled here about types of astigmatism. Check it
Classification of astigmatism vision is
based on the focal point or the principal meridians of your eyes. We will explain both. Following are the
5 types of astigmatism which are based on focal points of your
Simple Myopic Astigmatism
The vertical images in front of you get out of focus and appear unclear in this
condition. Simple myopic astigmatism is an amalgamation of effects of astigmatism with myopia or
nearsightedness. It means one principal meridian focuses on the retina, and the other focuses in front of the
Simple hyperopic astigmatism is a condition where you face astigmatism
vision along with hyperopia or farsightedness. One principal meridian focuses on the retina in this condition, and another central meridian focuses behind the retina. As a
result, you see the horizontal images blurry because they get out of focus.
In compound myopia astigmatism, you suffer from astigmatism and
nearsightedness or myopia like the simple myopic astigmatism. But in this condition, both the principal meridians
focus in the front of the retina. It means the light will come to focal points making the vision unclear and
In compound hyperopic astigmatism, both the principal meridian focuses
behind the retina. Thus it is a combination of astigmatism and farsightedness or hyperopia. The light comes to two
focal points, which are virtually located behind the retina. But both locations will be at a distance behind the
In mixed astigmatism, light comes to a focal point which is behind the
retina. And it also comes to a focal point which is before the retina. In this condition, you may have hyperopia (farsightedness) in one meridian and myopia (nearsightedness) in another meridian.
Following are the 2 types of astigmatism which are based on the
principal meridians of your eyes:-
In regular astigmatism eye, the principal meridians stay 90 degrees apart
from each other. As a result, you experience variation in refractive power from one meridian to another. This is
one of the most common types of astigmatism caused due to irregular lens curvature or corneal. Blurry vision, light
sensitivity, headaches are some of its most troublesome symptoms.
In irregular astigmatism also the principal meridian stays apart but not
at a 90-degree angle. Instead, the curvature at each meridian keeps changing from one point to other. A minor form
of this eye disorder can be found in everyone, but it’s irrelevant. It is rare for irregular astigmatism to be
medically diagnosed as a vision problem. It happens due to uneven corneal surface, surgery side-effects, or natural
The information given here can serve as your reference point to understand
astigmatism in a better way. However, only a qualified eye doctor or optometrist can conclude the type of
astigmatism vision you have based on a detailed eye exam.
They will prescribe a suitable treatment based on the result of your diagnosis. Even if your eyes appear healthy in
an eye exam, it is advisable to get your eyes checked regularly. This is because your vision keeps changing with
Aaron Barriga is the online marketing
manager for Insight Vision Center. With a knack for understanding medical procedures, and an interest in eye and
vision health, Aaron loves to share what he knows and what he learns.
He blogs to inform readers about the latest eye care
technology and other topics related to eye care, especially LASIK. Aaron loves collecting coasters from the
different bars and restaurants he visits during his travels.