Visual Defects And How They Are Corrected
Of the many wonders of God’s creation, the human eye is dubbed as the window to our soul as every emotion that we feel is mirrored through it. Just as they say that facial expressions can lie and mislead us but not what is seen in our eyes. It is basically because of our eyes that we can see and appreciate beauty and colors. But what happens when we lose our sight? Undoubtedly everything will turn into pitch black of nothingness.
There varied reasons why one loses sense of sight. Some may be due to congenital anomalies or hereditary defects, penetrating trauma to the eye, some medications that cause toxicity, aging, viruses and bacteria that were left untreated. Defects in vision may also vary in its form of treatment, prevention, rehabilitation and time of occurrence such as night blindness. What are the eye defects which can be corrected with especially designed eye lenses?
Astigmatism is an optical defect where vision is greatly blurred and causes difficulty in seeing fine details as a result of the eye optics’ inability to focus a point object into a sharp focused image on the retina because of an irregular curvature of the cornea or lens. Such vision defect can be corrected by spectacles, contact lenses or refractive surgery depending on the nature and severity of blurring. Choice of treatment may also vary as issues with regards to ocular health, refractive status and lifestyle are taken into consideration to determine whether such form of treatment is applicable and appropriate.
Hyperopia or farsightedness, a genetically-related disorder, is a vision defect wherein the eyeballs are short or lens are not round enough to be able to increase its optical power to make the image focused on the retina thus resulting to a blurred and distorted image. Individuals suffering from such eye defect have difficulty in focusing on nearby objects but can very well see distant objects. Treatment or corrections can be done using prescription eyeglasses or contact lenses with convex lenses or refractive surgery procedures.
Nearsightedness or medically termed as myopia is a vision condition where the eye fails to clearly see distant objects but nearby images are clearly visualized. It results when the eyeball is too long or the front of the eye known as cornea is excessively curved making light difficult to enter the eye resulting to a blurred vision. Vision correction is made possible through the use of prescription eyeglasses that bend the image that enters the eye to be able to focus the image correctly. For minor visual impairment, eyeglasses or contact lenses are worn only for specific types of activities.
Laser treatment is also available where reshaping of the cornea through the removal of some tissue occurs. Having a visual impairment disrupts the normal functioning of an individual not only with regards to job-related activities but also with activities of daily living and personal safety. With the latest in science and technology, several gadgets and procedures have become instrumental in improving the human vision.