Astigmatism is an asymmetric blurriness caused by an error in focusing. The directions of an image are sometimes more out of focus than the others. It is different to the case of myopia which involves a uniform blurriness in all directions.
The causes for astigmatism are the shape of the eye’s front surface known as the cornea, tilting of the lens inside the eye and it could also be a genetic distinction or a normal dissimilarity accompanying growth.
Astigmatism affects a person in a way where objects at all distances are different and hazy and the eye cannot focus. Even minor degrees may boost headaches and fatigues. This also reduces the concentration. These occur due to the eyes trying without attainment, to correct the haze and because there is a tendency to screw up the eye to see better, producing uneasiness in the muscles of the eyelid and face.
In order to correct astigmatism, we can use glasses or contact lenses. The correction may sometimes change the size and shape of objects and this also affects in determining the correct distance. At times, a person with astigmatism, may feel taller or shorter and walls or floors can appear sloppy or curvy. However, in a few weeks’ time, adjustments are made to suffice these side effects. This process of correction sometimes compromises optimal clarity versus visual discomfort.
To detect astigmatism, sometimes, people notice the haze themselves. However, a comprehensive eye examination will help one find out its intensity. It is not a disease and changes to it are quite slow and is not immediate in making conditions worse. On an average, most people have a very little amount of astigmatism. It would be best for you to consult an Optometrist and get updated with your ocular health to see whether you would benefit from astigmatism glasses or contact lenses.