How does nearsightedness differ from farsightedness?
Nearsightedness (myopia) and farsightedness (hyperopia) are two highly common refractive errors in today’s times. In simpler terms, refractive errors are a kind of vision related problem where the person is not able to clearly view objects. Such an error arises when the shape of the cornea changes which prevents light from focusing precisely on the retina.
In myopia, the eyes can only see the nearby objects clearly, whereas in hyperopia, only objects which are far away appear clear. In some cases, the person may even have a refractive error called astigmatism which is a combination of myopia and hyperopia.
There are different causes of myopia and hyperopia. Let us gain further clarity on the difference between myopia and hyperopia:
- About nearsightedness (myopia)
Causes of nearsightedness
We are able to see an object only when light is converted into visual or images. As you may already know that the retina is responsible for sending light to the optic nerve which gives electrical signals to the brain. If you are nearsighted or myopic, it involves a refractive error where light is not focused on the retina. The error occurs if the cornea is too curved or the eyeball grows too long. Myopia can be found at a young age, however, the chances increase with age. According to various ophthalmic studies, increased use of digital devices like smartphones, computers, and electronic readers (kindles).
Common symptoms of nearsightedness include:
- Blurriness while trying to distant objects
- Facing difficulty in understanding signs while driving, viewing writing on whiteboard or black board
- Headaches due to eyestrain
- Soreness or eye fatigue
- Squinting while forcing eyes to focus
Risk factors for nearsightedness
- Mostly, myopia is found in younger children as the shape of their eyes change while growing up
- Excessive visual strain and health problems like diabetes can lead to nearsightedness in adults as well
- About farsightedness (hyperopia)
Causes of farsightedness
This refractive error also occurs due to changes in the shape of the eye and can be inherited. As the process of image formation is explained earlier, in farsightedness, either the cornea becomes flat or the eyeball becomes shorter than what is normal.
Common symptoms of farsightedness include:
- Pain and aching around the eyes and temples
- Burning sensation at times
- Eye strain induced headaches
- Difficult to concentrate on near objects without straining
- Eye fatigue after near work
- Increased irritability of eyes
Risk factors for farsightedness
Aging is a major factor for hyperopia. Normal eye tests like the 20/20 test may not be effective in diagnosing mild cases of farsightedness, hence it is crucial to go for a proper dilated eye test.
Myopia and hyperopia treatment
Power eyeglasses and contact lenses help in deviating the light rays to make sure that the image is formed on the retina. It is crucial to ensure that you’re wearing eyeglasses with correct eye power to avoid problems like dizziness, headaches, and nausea.
Refractive surgery – permanent solution for myopia and hyperopia
To eliminate spectacle dependency from life and enjoy every moment to its best, consider getting refractive surgery, also known as spectacle removal surgery in common terms. LASIK (laser-assisted in situ keratomileusis) is the standard procedure for the same. However, with time advanced variations like SMILE (small incision lenticule extraction) and Contoura Vision have also come into existence. Which surgery is the most suited for which patient or condition can be determined by specialists only after carrying out a comprehensive pre-refractive workup which involves about 15-20 eye tests. To know more in detail about each of these procedures in detail and your eligibility for undergoing a refractive procedure, contact us at Centre For Sight. We have been providing eye care servicing for more than 25 years.
Other tips to keep your eyes and vision health and prevent severe refractive errors
- Include dark leafy veggies and fish loaded with omega-3 fatty acids.
- Maintain a physically active lifestyle to prevent health problems like diabetes, high cholesterol, hypertension, which are seen to negatively impact eyes.
- Rest your eyes at regular intervals throughout the day. Follow the 20/20/20 rule, take a break every 20 minutes and for 20 seconds, look at something about 20 feet away. This rejuvenates and relaxes the eye muscles.
- Prefer blue ray filter eyeglasses and wear sunglasses while going out in the sun to prevent damage to eyes by harmful UV radiations.
Both nearsightedness and farsightedness are the refractive errors which cause difficulty in carrying on with daily routine chores. If you feel that you are experiencing vision problems, get in touch with an eye specialist for a comprehensive eye checkup. Based on the diagnosis, you will be advised to use corrective lenses, eyeglasses, or surgery. And don’t forget to maintain an active, healthy, and balanced lifestyle. For reliable consultation and treatment, book an appointment at Centre For Sight, visit https://www.centreforsight.net/ . Be assured to have the most seamless experience ever, as we believe ‘every eye deserves the best’.