The influence of light on myopia, also known as nearsightedness, is a complex topic with various factors contributing to its development. Both outdoor and indoor lighting conditions play a crucial role in the progression of myopia. In this article, we will explore the effects of light on myopia and discuss how outdoor and indoor lighting can affect its development.

Astigmatism is a common refractive error. After parallel light rays are refracted by the eye's refractive system (cornea, lens, and vitreous body), they form two focal lines on the retina instead of one focus, ultimately resulting in unclear images. In layman's terms, astigmatism can be thought of as myopia at a certain angle. If not corrected, problems such as blurred vision, visual fatigue, squinting, and dizziness may occur.

The symbol "Rx" is commonly used as an abbreviation for prescription. The true meaning and origin of this symbol can be traced back to Latin and ancient medical practices. The symbol is actually represented as "℞," which stands for "Recipe" in Latin, meaning "take." In some prescriptions, the abbreviation "Rp" is also used.

Eyeglasses have evolved far beyond their traditional role as vision correction tools; they are now a seamless blend of technology and fashion. One of the key advancements in eyewear is the advent of lens coatings. These invisible innovations not only enhance the aesthetic appeal of glasses but also play a crucial role in optimizing visual clarity, comfort, and durability.

Wearing glasses is a common phenomenon for most people. Proper care and maintenance of glasses can extend the service life of the glasses. Many of us have been wearing glasses for many years, but many of us don’t know how to fit or wear them. Proper wearing of glasses can improve vision and prevent the rapid progression of myopia; reasonable maintenance is also particularly important for the lifespan of glasses and the health of the eyes.

Who is not suitable for wearing photochromic lenses? If people with high myopia wear photochromic glasses, due to their poor vision and photochromic lenses, they will have difficulty seeing and may easily suffer from visual fatigue. Therefore, such people should not wear photochromic glasses. People with myopia accompanied by astigmatism and whose visual acuity correction is lower than 1.0 should not wear photochromic glasses. People with myopia and astigmatism must see things clearly in bright light. After wearing photochromic lenses, due to the dim light, the pupils will dilate accordingly, resulting in a narrow anterior chamber angle, resulting in poor aqueous humor drainage. Over time, it is easy to induce glaucoma. People suffering from cataracts, glaucoma and other diseases may aggravate their condition by wearing photochromic glasses, so they should not wear photochromic glasses.