Myopia vs. Hypermetropia: Understanding the Key Differences
Myopia and hypermetropia are two prevalent refractive eye errors. Both conditions affect people’s ability to see things correctly.
They share similarities but differ in their cause, symptoms, effects on vision, and treatments. Understanding these conditions may help individuals with vision problems make informed decisions about their eye health.
In this post, we will explore myopia and hypermetropia, their causes, symptoms, treatment, and differences.
What Is Myopia?
Myopia, also known as nearsightedness, is an eye condition where distant objects appear blurred while close objects can be seen clearly.
It affects distance vision and is usually diagnosed before the age of 20. For example, individuals with myopia may have difficulty in certain activities, including reading highway signs from a distance, driving, watching television, or playing sports.
Causes and Risk Factors of Myopia
In myopia, the shape of the eye prevents light from bending properly, causing the light to focus in front of the retina instead of on the retina. This results in blurry vision.
It happens when your eyeball grows too long from front to back or due to problems with the cornea’s shape.
The different risk factors of myopia are:
- Family history of myopia
- Prolonged near work, including reading or using screens
- Certain ethnic groups may have a higher incidence of myopia
Symptoms of Myopia
The symptoms associated with myopia are
- Distant objects appear blurry
- Headaches
- Eye strain
- Constant Squinting
- Tiredness when driving or playing sports
- Holding objects close to the face or sitting close to the television
Treatment of Myopia
- Eyeglasses: The most popular way of correcting myopia is with eyeglasses. The prescription depends on the severity of the condition. Some may need glasses only for driving, watching movies, or viewing the classroom board while others may need to wear them for a longer time.
- Contact lenses: Some people may correct myopia with contact lenses. However, it requires more care to keep the lens clean
- Refractive surgeries: Myopia may be corrected using refractive surgery. It includes LASIK, LASEK, EPi-LASIK, PRK, SMILE.
What Is Hypermetropia?
Hypermetropia, also known as long-sightedness or hyperopia, is a common eye problem where near objects appear blurred whereas distant objects are seen clearly.
It will be difficult to perform certain tasks, including reading or working on the computer. It usually tends to run in families.
Causes and Risk Factors of Hypermetropia
Hypermetropia occurs when light is focused behind the retina instead of on it due to insufficient accommodation by the lens.
It occurs when the eyeball is shorter than normal or if the cornea appears flatter.
Different age groups are affected by hyperopia which is prevalent in people aged 40 and older.
Symptoms of Hypermetropia
The different symptoms of hypermetropia are:
- Nearby objects appear blurry
- Squinting often to see clearly
- Double vision when reading
- Dull pain in the eye
- Eyestrain, including burning eyes and aching in or around the eyes
- Eye discomfort while reading, writing, or drawing for a long time
- Headaches
Treatment of Hypermetropia
- Eyeglasses: Eyeglasses provide a simple way to correct hyperopia. The degree of hyperopia determines the type of lens required
- Contact lenses: Contact lenses also correct the way the light bends when it enters your eye. It is generally safe, comfortable, and convenient but may require more care to prevent dry eye and eye infections
- Surgery: LASIK eye surgery may help with lower degrees of hyperopia. Refractive lens exchange may help people with higher degrees of hyperopia.
Myopia Vs Hypermetropia Differences
Both myopia and hypermetropia are types of refractive errors and can be easily corrected with prescription eyeglasses, contact lenses, or refractive surgeries. Both share common symptoms, including squinting to see clearly, fatigued eyes, eye strains, and headaches.
The biggest difference between myopia and hypermetropia is where the objects appear in focus. In people with myopia, distant objects appear blurred while in people with hyperopia closer objects appear blurred.
Myopia | Hypermetropia | |
Other names | Also known as Short-sightedness | Also known as Long-sightedness |
Definition | Distant objects appear blurred while close objects are clear | Close objects appear blurred while distant objects are clear |
Causes | Light focuses in front of the retina | Light focuses behind the retina |
Symptoms | Blurry distant vision, eye strain, squinting, headaches | Blurry near vision, eye strain, headaches, squinting |
Onset age | Develops in childhood and may progress | Can be present from birth, more in adults over 40 |
Shape of the eyeball | Eyeball is too long or the cornea is too curved | Eyeball is too short or the cornea is too flat |
Difficulty | Difficulty in driving | Difficulty in reading |
Corrective lenses | Concave lenses to diverge lights | Convex lenses to converge light |
Diagnosis | Visual acuity test, refraction test, retinal examination | Visual acuity test, refraction test, retinal examination |
Treatment | Eyeglasses, contact lenses, surgery | Eyeglasses, contact lenses, surgery |
Table: Key differences between Myopia and Hypermetropia
About Surya Eye Hospital
If you are experiencing issues with your vision, it is important to get it checked out by a professional ophthalmologist.
Surya Eye Hospital located in Mumbai specializes in comprehensive eye hospitals with over 40 years of excellence.
The hospital is equipped with a team of experienced ophthalmologists and state-of-the-art technology offering a wide variety of services, including routine eye exams to complex eye surgeries.
Conclusion
Myopia and hypermetropia are two of the most common refractive errors that affect vision. Both have distinct causes, symptoms, and effects on vision.
If you are experiencing any vision problems, including myopia, or hypermetropia and want to know more about the different treatment options suitable for you, book a consultation here at Surya Eye Hospital today.
Frequently Asked Questions
What are the preventive measures to minimize the risk of myopia and hypermetropia?
Adopt healthy eye habits, including taking regular eye breaks from the screen. Ensure adequate lighting conditions while working and reading and maintain healthy food habits. Also, regular eye checkups are essential to diagnose these vision problems at an earlier stage.
How often should you have your eyes checked for vision problems?
It is preferable to get your eyes checked every year for vision problems if you are an adult. If you have specific risk factors or have pre-existing eye conditions, it is essential to check often for issues.
Is myopia curable?
Myopia can be managed with eyeglasses, contact lenses, or corrective surgery. It may slow the progression of the condition. However, it can not be cured completely. Studies have shown that increasing the time outdoors may reduce the onset of myopia.
References
- https://my.clevelandclinic.org/health/diseases/8579-myopia-nearsightedness
- https://www.mayoclinic.org/diseases-conditions/nearsightedness/symptoms-causes/syc-203755
- https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/nearsightedness-myopia56
- https://www.aoa.org/healthy-eyes/eye-and-vision-conditions/hyperopia?sso=y
- https://journals.lww.com/apjoo/fulltext/2016/11000/environmental_factors_and_myopia__paradoxes_and.4.aspx
- https://www.sciencedirect.com/science/article/abs/pii/S0161642011006099