Eyesight, a cornerstone of our perception of the world, is subject to change over time. It’s not uncommon to find that your prescription for glasses or contact lenses given by your optometrist has shifted since your last eye exam. This adjustment prompts the question: “Why did my prescription change?”
The most fundamental reason behind prescription changes lies in the natural aging process of the eye. Our eyes undergo modifications as we grow older. The lens, which is the part of the eye responsible for focusing light onto the retina, becomes less flexible with age. This reduced flexibility leads to a condition called presbyopia, making it challenging to focus on close-up objects. As a result, many individuals find that they need reading glasses or multifocal lenses to address this issue.
The shape of the cornea — the clear front surface of the eye — also plays a pivotal role in prescription changes. Conditions like astigmatism, characterized by an irregular corneal shape, can result in blurred or distorted vision. Changes in corneal curvature can lead to shifts in your prescription over time. These changes can be influenced by genetics, aging or other external factors.
Conditions such as diabetes and hypertension can affect blood vessels in the eyes, potentially leading to vision changes. Additionally, pregnancy can cause temporary shifts in prescription due to hormonal changes and fluid retention that affect the eyes’ shape and focusing ability.
Our modern lifestyles also contribute to prescription changes. Extensive use of digital screens can strain the eyes and lead to tiredness and discomfort. This extended near-work can contribute to shifts in prescription, especially if proper ergonomic practices are not followed. Likewise, if your job requires prolonged focus on close-up tasks, your eyes may adapt to these demands, leading to changes in prescription.
Exposure to bright sunlight, for instance, can contribute to the development of conditions like cataracts or macular degeneration over time. Protective eyewear and sunglasses that block harmful UV rays can help mitigate such changes.
It’s important to recognize that the human body is dynamic and ever-changing. As a result, variations in your eyesight are normal. However, the most effective way to understand why your prescription has changed is through regular eye examinations. These comprehensive assessments provide insights into the specific factors driving changes in your vision. They can also help determine if you need to update your eyeglasses or contact lenses.
Understanding why changes in eyeglasses and contact lenses prescriptions puts you in control of your eye health. It’s important to not neglect these changes and to regularly schedule check-ups with your optometrists.
If you have any concerns about the state of your vision or if you’re due for an eye exam, don’t hesitate to schedule an appointment with the esteemed eye doctor at Vienna Eyecare Center at (703) 938-7633. You may also fill out our contact form. We serve residents of McLean, Reston and Vienna, VA.
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