The blue glare or shift you are experiencing when looking at lights or windows through your new glasses is likely caused by a phenomenon called chromatic aberration. Chromatic aberration occurs when different colors of light do not converge at the same focal point after passing through a lens.
Eyeglass lenses, especially those made of certain materials or with specific coatings, can sometimes exhibit chromatic aberration to some degree. This aberration can cause different colors to focus at slightly different points, leading to a bluish or color-shifted halo or glare around objects, particularly those with high contrast, such as bright lights or windows.
There are a few factors that may contribute to chromatic aberration in your glasses:
Lens Material: Different lens materials have varying levels of dispersion, which is the ability to separate different colors of light. High-index lenses, for instance, may have higher dispersion and be more prone to chromatic aberration.
Lens Design: Lens design, including the curvature and thickness of the lenses, can also affect chromatic aberration. Thicker lenses and stronger prescriptions may introduce more pronounced aberrations.
Lens Coatings: Some lens coatings, such as anti-reflective coatings, are designed to minimize reflections and improve visual clarity. However, if the coating is not of high quality or is applied unevenly, it can contribute to chromatic aberration.
If you are experiencing significant or bothersome chromatic aberration with your new glasses, it is recommended to consult with your optician or eyecare professional. They can assess the issue and potentially recommend alternative lens options or adjustments to improve your visual experience.