Understanding Visual Disturbances After Solar Eclipse Viewing
When looking at a white wall, I experience rippling flashes of light when my eyes move up and down? Hello, Doctor: At the end of June 2020, during the annular solar eclipse (like a ring), I looked at the sun with the naked eye for about ten seconds. After looking away, the visual...
Dr. Gao Pilin Reply:
Hello, 1. It is possible that the vitreous is pulling on the retina. Therefore, it is advisable to avoid activities that may cause this phenomenon. If you experience this condition while at rest, you should seek an examination promptly. 2. It should not be related. A few seco...[Read More] Understanding Visual Disturbances After Solar Eclipse Viewing
Morning Visual Afterimages: Causes and Solutions for Eye Issues
Seeing afterimages upon waking up in the morning? Since last Friday night, after using my phone for nearly two hours in the dark, I've been experiencing afterimages when looking at anything. I thought it would improve after sleeping, but as of now, when I wake up in the morn...
Dr. Cai Wenyuan Reply:
Hello, last Friday night, I used my phone for nearly two hours in the dark without any lights. I will try to avoid this in the future and will continue to monitor the situation. Wishing you safety and health. Sincerely, Dr. Tsai Wen-Yuan, Director of the Department of Ophthalmolo...[Read More] Morning Visual Afterimages: Causes and Solutions for Eye Issues
Understanding Common Eye Issues: Blackout and Visual Afterimages
Eye problems 1. If one hand covers one eye and you focus on the covered eye, it will gradually become darker. Is this normal? 2. If you alternate between opening and closing one eye for a long time, you may see a sensation similar to a television with no signal. Is this stateme...
Dr. He Jianxian Reply:
1. It is normal for the vision to gradually darken when focusing on the covered eyes. 2. There should be no such phenomenon when opening and closing the eyes; if there is no signal, it indicates a potential issue.[Read More] Understanding Common Eye Issues: Blackout and Visual Afterimages
Understanding Visual Afterimages: Causes and Concerns
The phenomenon of visual persistence? Recently, I occasionally see images of different shapes floating. For example, after looking at the sun and then at the sky, I see round, dark images. Sometimes, when I look from a dark place to a bright area, different shapes also appear, bu...
Dr. Cai Wenyuan Reply:
It can be considered as visual persistence. Thank you.[Read More] Understanding Visual Afterimages: Causes and Concerns
Understanding Retinal Laser Treatment: Risks and Post-Procedure Effects
Retinal laser therapy Hello doctor, I have some questions regarding retinal laser treatment during and after the procedure. 1. If the left eye undergoes laser treatment, will the right eye, if not covered, be affected by the laser light and potentially suffer from eye damage? ...
Dr. He Jianxian Reply:
The general purpose of retinal laser treatment is to use the heat from the laser light to create a stronger adhesion between the retinal tissue and the underlying layers. During the procedure, the other eye does not need to be covered, and there have been no reports of it being a...[Read More] Understanding Retinal Laser Treatment: Risks and Post-Procedure Effects
Understanding Visual Afterimages: Effects on Eye Health and Floaters
Visual persistence Hello, doctor. I would like to ask about the effects of frequently seeing reflections from the sun or light from LED displays, which can cause visual persistence. What impact does looking at bright lights have on the eyes? Is it harmful to floaters? Thank you.
Dr. Gao Pilin Reply:
Hello: Brief flashes of light will not affect the eyes and will not impact floaters. At the Eye Department of Puzi Hospital in Taiwan, we are open Monday to Friday from 8:00 AM to 12:00 PM and Wednesday afternoons from 1:00 PM to 4:30 PM. We hope to have the opportunity to serve ...[Read More] Understanding Visual Afterimages: Effects on Eye Health and Floaters
Understanding Visual Afterimages: Causes and Concerns in Eye Health
Nighttime visual afterimages Hello, doctor: Recently, I have been experiencing visual disturbances, particularly in the evening, where I intermittently see visual afterimages (not every day). Whenever there are moving objects in front of me (like cars, my hands shaking, or my hea...
Dr. Wang Zhishun Reply:
Hello, based on my experience, the situation you described is often caused by eye strain due to excessive use of the eyes or poor quality of tears. I suggest you start by changing your eye usage habits or environment. As for the hormone medication, I'm not sure which one you...[Read More] Understanding Visual Afterimages: Causes and Concerns in Eye Health
Understanding Visual Afterimages: Causes and Concerns in Eye Health
Seeing objects with a trailing afterimage? Dear Doctor: In the past few days, when I wake up in the morning and go to the bathroom, moving from a dark area to a well-lit area (without turning on the light but with some ambient light), I have noticed a strange visual phenomenon. W...
Dr. Hu Yusheng Reply:
Hello: The possible reasons for your question are as follows: 1. A normal physiological phenomenon; in low light conditions, if the light source is flickering (such as fluorescent lights or energy-saving bulbs), there may be a reaction where the eyes sometimes perceive light and ...[Read More] Understanding Visual Afterimages: Causes and Concerns in Eye Health
Understanding Your MRI Report: Insights on Visual Disturbances and Next Steps
MRI report! Dear Dr. Liu, I previously visited an ophthalmologist due to severe visual afterimages, and below are the findings from my MRI report: Imaging findings: MRI of Head: Parameters: 1. T1-weighted FLAIR axial images. 2. T2-weighted FSE and FLAIR axial images. 3. Diffusi...
Dr. Liu Jingxian Reply:
Hello: The data obtained from the MRI and EOG is insufficient to make a definitive diagnosis. Your issue (severe afterimages, making it nearly impossible to see object images) may require the assistance of a neuro-ophthalmologist. Additional diagnostic tests may be necessary to r...[Read More] Understanding Your MRI Report: Insights on Visual Disturbances and Next Steps
Understanding After Images: Eye Health Concerns and Diagnostic Tests Explained
Questions about After Image! I sought medical attention because I experience afterimages when looking at things. The doctor arranged a visual field test, but I noticed that while the previous bright spot had not yet disappeared from my vision, the next spot kept appearing continu...
Dr. Hu Yusheng Reply:
Hello: The phenomenon you are experiencing, where you see afterimages, is referred to as "afterimage" in English. Theoretically, visual afterimages are a normal physiological occurrence and should not cause discomfort in daily life. As for the likelihood of seeing a new...[Read More] Understanding After Images: Eye Health Concerns and Diagnostic Tests Explained