Blue and Red Light Halos in Vision: Causes and Concerns - Ophthalmology

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The phenomenon you are experiencing, where you see blue and red halos around objects, particularly when viewing them at an angle, can be attributed to several factors related to your vision and the optical properties of your eyes. Given your high degree of myopia (1200 degrees) and mild astigmatism, these conditions can significantly influence how light is processed by your eyes.

1. Optical Aberrations: High myopia can lead to various optical aberrations, which are imperfections in the way light is focused by the eye. These aberrations can cause light to scatter in unusual ways, leading to the perception of colored halos around lights. When you look at bright lights, such as street lamps or headlights, the light may not focus perfectly on your retina, resulting in the separation of colors—often seen as blue and red halos.

2. Chromatic Aberration: This is a specific type of optical aberration where different wavelengths of light are refracted by different amounts. Since blue light has a shorter wavelength than red light, it is bent more sharply when it enters the eye. This can cause blue light to focus at a different point than red light, leading to the perception of colored fringes or halos around bright objects, especially when viewed at an angle.

3. Lens Effects: The lenses in your glasses may also contribute to this phenomenon. If your lenses have certain coatings or if they are not perfectly aligned with your eyes, they can introduce additional optical distortions. It might be beneficial to consult with your optometrist or ophthalmologist to ensure that your lenses are appropriate for your prescription and that they are not contributing to the issue.

4. Retinal Sensitivity: Your retina's sensitivity to different wavelengths of light can also play a role. If there are changes in the way your retina processes light, it could lead to an exaggerated perception of certain colors, especially in low-light conditions or when viewing bright lights.

5. Visual Processing: The brain's interpretation of visual signals can also affect how you perceive colors and halos. If there are any changes in your visual processing, such as fatigue or strain from prolonged use of your eyes (common in individuals who work long hours on screens), this could lead to temporary visual disturbances.

6. Underlying Conditions: While the phenomena you describe may be benign, it is essential to rule out any underlying conditions that could contribute to these visual disturbances. Conditions such as retinal tears, vitreous detachment, or even early signs of cataracts can cause similar symptoms. Given your history of floaters (which you mentioned as "flying mosquitoes"), it is advisable to have a thorough eye examination to ensure that there are no significant issues with your retina or overall eye health.

In conclusion, the blue and red halos you are experiencing are likely due to a combination of optical aberrations, chromatic aberration, and possibly the effects of your corrective lenses. It is crucial to have regular eye check-ups, especially with your high degree of myopia and existing floaters, to monitor your eye health and address any changes in your vision promptly. If the symptoms persist or worsen, seeking a comprehensive evaluation from an eye care professional is highly recommended.