Nowadays, more and more young people feel that wearing oversized frame glasses can make their faces appear smaller, which is trendy and fashionable. However, they may not be aware that oversized frame glasses are often one of the reasons for deteriorating vision and strabismus. In fact, not everyone is suitable for wearing oversized frame glasses! Especially for individuals with narrow interpupillary distance and high myopia!
Lens & Processing Tips
1. The optical center point of all lenses should be in the exact center of the lens.
2. The diameter of lens blanks generally ranges between 70mm-80mm.
3. The interpupillary distance for most adult females is typically between 55mm-65mm, with around 60mm being the most common.
4. Regardless of the size of the frame, during processing, the optical center point of the lens must be appropriately displaced to correspond to one's interpupillary distance and pupil height.
Two important parameters in lens fitting are diopters and interpupillary distance. When fitting oversized frame glasses, particularly the interpupillary distance parameter needs to be considered. The distance between the centers of the two lenses should match the interpupillary distance; otherwise, even if the prescription is correct, wearing glasses may cause discomfort and affect vision.
The Issues Caused by Wearing Oversized Frame Glasses
The frame serves a stabilizing function, allowing the lenses to be in the right position to function properly, so stability is important. oversized frame glasses, due to their oversized lenses, can have a certain impact on the eyes, leading to discomfort if worn for extended periods.
Oversized frame glasses can be heavy, and wearing them for extended periods can compress the nerves on the nose bridge and around the eyes, putting excessive pressure on the eye muscles and leading to eye fatigue. Prolonged wear may result in eye inflammation, headaches, redness, and eye strain. Additionally, individuals wearing oversized frame glasses may find that looking down or sudden head movements can cause the glasses to slip off easily.
Excessively heavy oversized frame glasses can also affect people's appearance. Wearing overly heavy glasses frames can cause facial distortion, especially impacting the forehead, nose bridge, and chin to some extent. During the process of wearing glasses, if a person has smaller eyes, the glasses frame may compress the eyes, making them appear smaller; if the person has larger eyes, overly heavy glasses frames can make the eyes appear even larger.
The Issue of Interpupillary Distance with Oversized Frame Glasses
The oversized lenses of oversized frame glasses can make it difficult for the visual center to align with the individual's actual interpupillary distance. The oversized frame of glasses often results in the optical center of the lenses being greater than the distance between the pupils, causing a misalignment between the optical center of the lenses and the positions of the pupils. This misalignment can lead to symptoms such as decreased vision, strabismus, dizziness, and the longer one wears them, the higher the likelihood of an increase in myopia.
Additionally, it's important to note that the refractive power of different areas of the lens is not the same. Typically, the refractive power at the center of the lens is slightly lower than that at the periphery of the lens. Our pupils focus based on the center of the lens, so wearing oversized frame glasses frequently may lead to the glasses slipping down due to their weight. This can cause a misalignment between the focus of the pupil and the center of the lens, resulting in visual disturbances and a continued decline in vision.
How to Choose the Right Glasses Frame?
1. Lightweight, the lighter the better. A lightweight frame can reduce pressure on the nose, making it comfortable!
2. Not easily deformable, very important! Frames that are prone to deformation not only affect the lifespan but also impact the corrective effect on vision.
3. Excellent quality, even more important. If the frame is of poor quality, it is prone to detachment and discoloration, directly affecting the frame's durability.
4. Personality matching, most important. Everyone's facial features differ, whether it's a full or thin face, high or low nose bridge, or asymmetry between the left and right ears and face, leading to improper wearing. Therefore, it is important to choose a frame that suits your personal features.
Hazards of Girls Choosing Oversized Glasses Frames
1. The majority of girls have interpupillary distances smaller than males, leading to conflicts between small interpupillary distances in girls and large glasses frames, resulting in issues after the lens processing:
2. When the frame is too large and the interpupillary distance is small, the lens displacement is insufficient, causing the optical center of the finished glasses to be greater than the actual interpupillary distance, leading to various discomforts when wearing.
3. Even if the interpupillary distance is accurately processed, the lens displacement will inevitably reach the thickest part at the edges, causing the finished glasses to be too heavy. This may result in the appearance of prismatic effects at the edges, making them uncomfortable to wear and possibly leading to dizziness and other symptoms.
Suggestions for Fitting Oversized Glasses Frames
1. For individuals with moderate to high degrees of refractive error, choosing oversized frames may not solve the issue of thick edges of lenses, regardless of the high refractive index of the lenses selected. Even if the myopia degree is low, the edges of the lenses will still be relatively thick.
2. When choosing oversized frame glasses, it is advisable to opt for lighter materials such as TR90/titanium metal/plastic steel rather than plate materials (which are heavier). The frame legs should not be too thin, as front-heavy and back-light frames may cause the glasses to slide down constantly.
Everyone wants to have a beautiful appearance, but please do not forget that eye health is the most important. If you neglect the purpose of correcting vision for the sake of so-called "beauty," and end up causing other eye diseases, it will be very detrimental.
When choosing glasses frames, in addition to considering your face shape, hairstyle, skin tone, etc., it is crucial to pay attention to the condition of your eyes and select frames that suit you. Avoid blindly choosing popular oversized frames, as this may lead to unnecessary visual problems.
Post time: Jun-28-2024