Understanding Blue Light Blocking Glasses: Do They Really Work?
Blue light blocking glasses Hello Dr. Gao, I have a question I would like to ask you. A few days ago, I purchased a pair of blue light blocking glasses (full-frame) that can filter out 70% of blue light. However, my existing prescription glasses for my myopia filter out 20% of b...
Dr. Gao Pilin Reply:
Hello: If 70% of blue light is filtered out, and then 30% of the remaining light is filtered again by 20%, it should leave 30% * 80% = 24%, meaning that 76% has been filtered out. I'm not sure if this is correct. As for the blue light from LED lights, it will not harm your e...[Read More] Understanding Blue Light Blocking Glasses: Do They Really Work?
Understanding Retinal Tears and Membranes: Insights and Management
Retinal tear laser treatment Dear Dr. He, Three months ago, during a routine eye examination for my high myopia, a peripheral retinal tear was unexpectedly discovered in my right eye. The clinic physician performed laser photocoagulation at that time. Recently, during a follow-u...
Dr. He Jianxian Reply:
Macular folds are essentially a natural occurrence, likely caused by the traction between the retina and the vitreous due to vitreous degeneration. Currently, there are no appropriate preventive or therapeutic measures available in clinical practice. As for the blue light you see...[Read More] Understanding Retinal Tears and Membranes: Insights and Management
Understanding Blue Light Spots in Dark: Eye Health Insights
When the lights are turned off at night, I see many small blue light spots in front of my eyes? Hello, Doctor Gao: I have myopia of 1000 degrees and also experience floaters. After a dilated eye exam, my retina was found to be healthy. However, when I enter a dark room at night, ...
Dr. Gao Pilin Reply:
Hello Amy: The small blue light may be a form of photopsia, which is a physiological phenomenon. The drifting branches are likely indicative of floaters.[Read More] Understanding Blue Light Spots in Dark: Eye Health Insights
Understanding Eye Health: Blue Ring Around the Iris and Care Tips
The color of the sclera and some eye care issues? Hello, doctor. I have a question I'd like to ask you. Recently, I've noticed a thin, faint blue (indigo?) ring at the junction of my cornea and sclera. Is this normal? I can only see it clearly under a desk lamp; I hadn&...
Dr. Gao Pilin Reply:
Hello, Zhili: The area where the cornea meets the sclera has a thin, faint blue ring, which is a type of lipid, usually cholesterol. If observed in individuals under 40, it is often associated with hyperlipidemia, particularly familial hypercholesterolemia. However, this is a nat...[Read More] Understanding Eye Health: Blue Ring Around the Iris and Care Tips
Struggling with Glasses: Persistent Dizziness and Eye Issues Explained
There are issues with fitting glasses regardless of how they are adjusted? Hello Doctor: Thank you for taking the time to address my questions. The content may be a bit lengthy, but I want to clearly explain my situation, and I appreciate your help. I have high myopia and floater...
Dr. Liang Ce Reply:
We recommend that you: 1. Since you have already scheduled appointments with the ophthalmology and neurology departments, please undergo further examinations to identify the cause and determine if additional treatment is necessary. 2. You may consider visiting a medical center fo...[Read More] Struggling with Glasses: Persistent Dizziness and Eye Issues Explained
Understanding Prescription Issues: Adjusting Your Glasses for Optimal Vision
Prescription lens degree issues? Hello, doctor. When I usually go out, I wear glasses that are about 150 degrees less than my actual prescription, but my regular check-ups show a vision of 1.0, so the doctor said I don't need to change my glasses. I also have a pair of compu...
Dr. Gao Pilin Reply:
Hello, if the prescription for the right eye has increased, it indicates that the glasses are balanced for both eyes. There should not be any issues as you mentioned. For reading or intermediate distances, the principle is to see clearly, and there is no need to be overly concern...[Read More] Understanding Prescription Issues: Adjusting Your Glasses for Optimal Vision
Understanding Retinal Laser Treatment: Key Questions and Insights
Retinal laser treatment Dear Dr. Gao, I recently discovered a retinal tear due to high myopia and underwent laser treatment. I am determined to protect my eyes to avoid the path to blindness in the coming years or even decades. This has led to many questions and decisions regard...
Dr. Gao Pilin Reply:
Hello Andre: 1. There should only be one type. 2. Scarring will persist and typically will not be repeated on the same area. 3. 4. 5. Injecting around the entire circumference is ineffective and does not provide protection to the center; it should be done around the perimeter of ...[Read More] Understanding Retinal Laser Treatment: Key Questions and Insights
Understanding Light Pollution: Eye Safety and Protection Tips
The issue of light pollution? Hello Doctor, I have a few questions to ask: 1. When looking directly at an infrared camera at night, I see red light. I found online that this is due to infrared LEDs or infrared laser illumination. Will looking directly at it for about ten seconds ...
Dr. Gao Pilin Reply:
Hello, concerned individual: 1. Infrared light is invisible; briefly seeing red light is not a concern. 2. The reflected energy is minimal and will not cause harm. 3. The greatest harm in daily life comes from ultraviolet rays from the sun; if you are not afraid of sun exposure, ...[Read More] Understanding Light Pollution: Eye Safety and Protection Tips
Understanding Blue Afterimages: Causes and Solutions for Eye Issues
The eyes may perceive blue afterimages? Hello Doctor, I have dry eye syndrome and floaters, with myopia of about 175 degrees. Currently, when I look at a light-colored background (especially in dimly lit areas), I see blue color patches. I have recently consulted a doctor for an ...
Dr. Chen Anping Reply:
Mr. Hsuan: Hello, based on your description, it is possible that you are experiencing meibomian gland hypersecretion, which causes lipids to adhere to the corneal surface. Additionally, due to myopia and a dim background, the blue light spectrum in the lighting becomes more prono...[Read More] Understanding Blue Afterimages: Causes and Solutions for Eye Issues
Understanding Single-Eye Visual Disturbances: Causes and Solutions
Monocular visual field oscillation Hello Doctor: I have myopia of about 500 degrees in both eyes along with mild astigmatism. To prevent my prescription from worsening, I pay attention to the time, brightness, and blue light filtering when using computers and smartphones, and I t...
Dr. Cai Wenyuan Reply:
It is recommended to seek medical examination.[Read More] Understanding Single-Eye Visual Disturbances: Causes and Solutions
Adjusting to New Glasses: Managing Discomfort and Eye Strain
Get new glasses? I changed to a new pair of glasses over a month ago, with a slightly larger frame (the prescription is the same as my old glasses, and both have blue light blocking). After wearing them, I felt uncomfortable, so I went back for adjustments three times. The optica...
Dr. Cai Wenyuan Reply:
You can visit a hospital or clinic for an examination.[Read More] Adjusting to New Glasses: Managing Discomfort and Eye Strain
Do Blue Light Blocking Glasses Increase Blue Light Exposure?
Questions about blue light blocking glasses? Hello, doctor. I have been wearing blue light filtering glasses recommended by my optometrist for several years. Recently, I noticed something concerning: when the light source is coming from behind and above rather than directly in fr...
Dr. Liang Ce Reply:
We recommend that you consult with an ophthalmology outpatient clinic at a medical center or large hospital. Thank you, and wish you good health![Read More] Do Blue Light Blocking Glasses Increase Blue Light Exposure?
Understanding Eye Pressure Measurement: Safety Concerns and Procedures
Intraocular pressure measurement Hello, Doctor Gao. Today, during the process of measuring my intraocular pressure by the nurse, I was very nervous, which resulted in poor readings. My eye was measured more than 15 times using the air puff tonometer, and I saw several flashes of ...
Dr. Gao Pilin Reply:
Hello, Xiaomi: The use of jets and blue light will not cause harm to the eyes, so please rest assured.[Read More] Understanding Eye Pressure Measurement: Safety Concerns and Procedures
Understanding Eye Flashes and Glare: Causes, Concerns, and Care Tips
Flashes of light, glare? I am nearsighted with a prescription of -5.50 diopters in my left eye and -3.50 diopters in my right eye, and I have astigmatism of -2.50 in my left eye and -1.50 in my right eye. I started experiencing floaters about six years ago. Recently, in the past ...
Dr. Gao Pilin Reply:
Hello: This is likely the flashes caused by the vitreous pulling on the retina. If the examination showed no issues, just monitor it on your own. If the frequency increases or if you feel the condition worsens, you can get re-evaluated. There's no need for any specific maint...[Read More] Understanding Eye Flashes and Glare: Causes, Concerns, and Care Tips
Understanding Eye Flashes and Glare: Causes and Self-Assessment Tips
Flashes of light, glare? Hello, Doctor Gao: I am nearsighted with a prescription of -5.50 in my left eye and -3.50 in my right eye, and I have astigmatism of -2.50 in my left eye and -1.50 in my right eye. I started experiencing floaters about six years ago. Recently, in the past...
Dr. Gao Pilin Reply:
Oh no, hello: This is likely the flashes caused by the vitreous pulling on the retina. If the examination showed no issues, you can just monitor it on your own. If the frequency increases or if you feel the situation worsens, then you should get re-examined. There's no need ...[Read More] Understanding Eye Flashes and Glare: Causes and Self-Assessment Tips
Essential Eye Care Tips: Monitoring Symptoms and Safe Activities
I am the questioner #179323? Hello Doctor, thank you for answering my questions. Since the symptoms are not recent and infrequent, I have decided to observe for now. I would like to further inquire about what to look for during this observation. Is it sufficient to monitor for an...
Dr. Gao Pilin Reply:
Hello, Pear: That's correct. Observation should focus on whether there is an increase in floaters and light sensitivity, as well as any presence of shadows in the visual field or a rapid decline in vision. There is no need to avoid looking at light sources. Light sensitivity...[Read More] Essential Eye Care Tips: Monitoring Symptoms and Safe Activities
Understanding Retinal Tension: Managing Eye Strain from Screen Time
Regarding retinal traction? Hello Doctor, due to my job, I often have to look at a computer screen. Recently, over the past month or two, I have noticed a blue light spot appearing at the bottom of my left eye when I close it, especially when I am fatigued or before sleeping (it ...
Dr. He Jianxian Reply:
Retinal traction is related to vitreous activity rather than eye strain or the use of electronic devices. It typically occurs when eye movements cause the vitreous to shift and pull on the retina. This type of traction often leads to the perception of flashes of light, similar to...[Read More] Understanding Retinal Tension: Managing Eye Strain from Screen Time
Is Staring at LED Blue Light Harmful to Your Eyes?
Direct exposure to LED blue light? Hello, doctor. Last night, I looked directly at the LED blue light on my charger. It was very glaring, and I quickly closed my eyes, probably only looking for about 1 to 2 seconds. However, I'm still worried about whether it could harm my e...
Dr. Gao Pilin Reply:
Hello, there will be no harm, please rest assured.[Read More] Is Staring at LED Blue Light Harmful to Your Eyes?
Understanding Vision Issues with New Glasses: Dizziness and Discomfort Explained
Eyeglass issues? Hello Dr. Tsai, I would like to ask about a recent issue I've been experiencing. I recently started wearing new glasses that have the same prescription as my old ones, but they include a blue light filter. However, when I look at things with my left eye th...
Dr. Cai Wenyuan Reply:
It may be necessary to measure the prescription for glasses and the pupillary distance.[Read More] Understanding Vision Issues with New Glasses: Dizziness and Discomfort Explained
Do Blue UV400 Sunglasses Let in More Blue Light Than Other Colors?
Blue-tinted sunglasses with UV protection? Do UV400 blue lens sunglasses receive more blue light compared to UV400 sunglasses with other lens colors? Here, I am referring to the "non-coated mercury type," which allows for a faint view of the eyes when worn. I am concern...
Dr. Gao Pilin Reply:
Hello: It is best not to choose blue sunglasses; darker lenses are preferable. Blue lenses do not filter out blue light, so they allow more blue light penetration compared to darker sunglasses.[Read More] Do Blue UV400 Sunglasses Let in More Blue Light Than Other Colors?