Eye Appointment Terminology: What Does KR Mean? - Ophthalmology

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The abbreviation "KR" on your eye appointment slip typically stands for "Keratometry Reading." Keratometry is a test that measures the curvature of the cornea, which is the clear front surface of the eye. This measurement is crucial for determining the appropriate prescription for contact lenses or glasses, especially for individuals with astigmatism or those considering refractive surgery. The keratometry readings provide information about the shape and power of the cornea, which can help eye care professionals assess the overall health of your eyes and any potential issues related to vision.

Regarding your concern about an increase in astigmatism of 150 to 200 degrees, there are several factors that can contribute to changes in astigmatism over time. Astigmatism occurs when the cornea is irregularly shaped, causing blurred or distorted vision. Here are some common reasons why astigmatism might increase:
1. Changes in Eye Shape: The shape of the cornea can change due to various factors, including aging, eye injuries, or conditions like keratoconus, where the cornea becomes progressively thinner and more conical in shape.

2. Eye Surgery: If you have had any previous eye surgeries, such as cataract surgery or LASIK, these procedures can alter the shape of the cornea and potentially lead to changes in astigmatism.

3. Eye Strain: Prolonged periods of focusing on screens or reading can lead to eye strain, which may temporarily affect your vision. While this may not directly cause an increase in astigmatism, it can exacerbate existing refractive errors.

4. Genetics: Astigmatism can be hereditary, and if family members have experienced changes in their vision, it may be a contributing factor for you as well.

5. Health Conditions: Certain health conditions, such as diabetes, can affect vision and may lead to changes in refractive errors, including astigmatism.

6. Environmental Factors: Exposure to UV light and other environmental factors can also impact the health of your eyes and potentially lead to changes in vision.

It’s important to maintain regular eye examinations to monitor any changes in your vision and to discuss any concerns with your eye care provider. They can provide personalized advice based on your specific situation and help you understand the implications of your keratometry readings and astigmatism changes.

In summary, "KR" refers to keratometry readings, which are essential for assessing corneal shape and vision correction needs. An increase in astigmatism can result from various factors, including changes in eye shape, previous surgeries, eye strain, genetics, health conditions, and environmental influences. Regular check-ups with your eye care professional are crucial for managing your eye health and ensuring that any changes in your vision are appropriately addressed.