Understanding Persistent Visual Flashes: Causes and Concerns
Is it eye fatigue? Seeing bright spots of red, green, yellow, and blue scattered throughout your field of vision, which do not move regardless of the direction you look, and do not affect your ability to see other objects, may indicate a phenomenon known as "visual snow"...
Dr. He Jianxian Reply:
Since I have not encountered a patient with such symptoms, I cannot fully understand your situation. In general, we do not perceive nonexistent objects or light in our visual field. I recommend that you consult an ophthalmologist for a thorough examination and advice.[Read More] Understanding Persistent Visual Flashes: Causes and Concerns
Understanding Mildly Elevated Eye Pressure: Causes and Concerns
Slightly elevated intraocular pressure? After the clinic measurement, my left eye pressure is 18 and my right eye pressure is 24. My myopia is -7.00 in the left eye and -9.00 in the right eye. The doctor told me that using a slit lamp (without dilating drops) showed no significan...
Dr. Gao Pilin Reply:
Hello Kingsung: The intraocular pressure in your right eye is higher than the standard value; however, it is important to evaluate the optic nerve, visual field, and other factors together. Corneal thickness can also have an impact. Intraocular pressure can fluctuate, so multiple...[Read More] Understanding Mildly Elevated Eye Pressure: Causes and Concerns
Understanding Flashing Lights and Floaters: Key Questions Answered
Subsequent Issues After Floaters and Flashes Hello, doctor. Thank you for responding to my previous question. I went for a dilated eye exam (before seeing your response), and the results were the same as last time; my prescription hasn't changed. The doctor mentioned that th...
Dr. Cai Wenyuan Reply:
Hello, does the magnifying glass refer to contact with the eyeball? This is not necessary, but it does provide a better three-dimensional view. Generally, this examination is performed when there is a suspicion of a retinal tear to confirm it. A standard fundus examination requir...[Read More] Understanding Flashing Lights and Floaters: Key Questions Answered
Understanding Flickering Lights and Flashing Vision: Eye Health Insights
The lights sometimes flicker brightly, and there are flashes when I close my eyes? Three weeks ago, I noticed that indoors, the lights seemed to flicker, dimming for a moment before brightening again, with this change happening very quickly, possibly in less than a second, and oc...
Dr. Gao Pilin Reply:
Hello Mr. Pai: These two phenomena are likely due to different causes. The dimming of lights may be related to blood circulation issues, and you may want to consult a cardiologist. The flashes in your vision could be caused by the vitreous pulling on the retina, leading to electr...[Read More] Understanding Flickering Lights and Flashing Vision: Eye Health Insights
Understanding Floaters and Flashing Lights: When to Seek Help
Floaters issue? Hello Doctor, I was diagnosed with floaters this month, currently in my left eye. I had a fundus examination and my left retina is okay, with vision around 20/800, but it dropped to 20/650 after dilation. The doctor mentioned a black spot close to the optic nerve,...
Dr. Cai Wenyuan Reply:
Hello, based on your description, it does not seem to be an emergency situation. I recommend seeking medical attention according to the schedule. Wishing you safety and health. Sincerely, Dr. Tsai Wen-Yuan, Director of Ophthalmology, Taoyuan General Hospital, Ministry of Health a...[Read More] Understanding Floaters and Flashing Lights: When to Seek Help
Understanding Flashing Lights in Vision: Possible Causes and Concerns
A mass of something is flashing? Doctor, the issue is that initially, when I close my eyes, a blue mass appears in the center of my vision after a while. After a few months, this mass starts to flicker continuously, somewhat like a pulsing motion. It instantly disappears when I o...
Dr. Cai Wenyuan Reply:
Hello: The symptoms you described are not common and should not be related to the mydriatic agent. If examinations have confirmed that there are no issues, there is no need for concern; regular medical check-ups will suffice. Wishing you peace and health. Sincerely, Dr. Tsai Wen-...[Read More] Understanding Flashing Lights in Vision: Possible Causes and Concerns
Post-Retinal Detachment Surgery: Understanding Vision Recovery and Expectations
Post-retinal detachment surgery Hello Doctor, on December 23rd, I experienced a retinal detachment in my right eye due to straining during a bowel movement. I have a myopia of -1200 and flashes of light at -200. At that time, about two-thirds of my visual field was distorted, but...
Dr. He Jianxian Reply:
Regarding this issue, since I cannot directly assess the condition of your retina, I recommend consulting your attending physician for a more accurate evaluation.[Read More] Post-Retinal Detachment Surgery: Understanding Vision Recovery and Expectations
Understanding High Eye Pressure: Is It Glaucoma and How to Manage It?
Will high eye pressure improve? How long will it take to know if it returns to normal? I previously sought treatment at the hospital for dry eye syndrome, using dry eye drops and artificial tears for about eight months. During this period, I obtained my medication through a slow ...
Dr. Cai Wenyuan Reply:
Hello: It is difficult to make a diagnosis based solely on description. However, the likelihood of nerve damage from short-term elevated intraocular pressure is low, so there is no need to worry. If the elevated intraocular pressure is caused by corticosteroids, discontinuing the...[Read More] Understanding High Eye Pressure: Is It Glaucoma and How to Manage It?
Understanding High Myopia: Concerns About Retinal Health and Eye Pressure
High myopia Hello Doctor: I am severely myopic with a prescription of about -1000 diopters. In the past six months, I have experienced floaters and suspected flashes of light. I have a few questions to ask you: 1. Yesterday, I underwent a dilated fundus examination, and the doc...
Dr. Gao Pilin Reply:
Hello, anxious individual: 1. Without a tear, you need to closely monitor for any changes, as it is impossible to predict when a tear may actually occur. There is no way to prevent it from stretching; you can only reduce the risk by minimizing vigorous head movements. 2. If you...[Read More] Understanding High Myopia: Concerns About Retinal Health and Eye Pressure
Understanding Eye Floaters: When to Seek Medical Attention
Eye fatigue Hello, doctor. I would like to ask a few questions regarding floaters. 1. How many additional black spots indicate a more serious condition? 2. I found information online stating that if the "appearance changes" of floaters, one should see a doctor. What doe...
Dr. Cai Wenyuan Reply:
Hello, you should be particularly vigilant and seek an eye specialist for examination if you experience the following symptoms of floaters: severe vision loss, distortion or warping of objects, fixed visual field defects, curtain-like shadows, flashes of light, or a sudden and ra...[Read More] Understanding Eye Floaters: When to Seek Medical Attention
Understanding Blue Light Perception and Glaucoma Symptoms
Blue light from lighting peripherals Hello Doctor: I was recently diagnosed with glaucoma, but I still have some questions that my treating physician did not address. 1. When I look at bright lights (especially very bright ones), I notice a blue halo around the edges of the lig...
Dr. He Jianxian Reply:
Your intraocular pressure is currently within the normal range. Unless there is further deterioration in the visual field examination, there is no need for additional measures to lower the eye pressure. As for the blue light you are seeing, it is likely unrelated to glaucoma. How...[Read More] Understanding Blue Light Perception and Glaucoma Symptoms
Understanding Glaucoma: Addressing Common Concerns and Misconceptions
Glaucoma-related issues I have read many articles and have a basic understanding of glaucoma. After experiencing eye fatigue, I visited an ophthalmologist who measured my intraocular pressure (IOP) at 20 mmHg. Today, I went for a fundus examination (at 9:30 AM) where the first IO...
Dr. Cai Wenyuan Reply:
Hello, anxiety can indeed affect the measurement of intraocular pressure. Based on your situation, there is no immediate need to go to a larger teaching hospital for re-examination. Further visual field testing would only be warranted if glaucoma is suspected. OCT is different fr...[Read More] Understanding Glaucoma: Addressing Common Concerns and Misconceptions
Understanding Vitreous Degeneration and Its Impact on Retinal Health
Vitreous degeneration and retinal diseases? Hello, Dr. Gao. I have high myopia of about -1200 diopters. Recently, I have noticed some small bright spots occasionally, although not frequently (there are no flashes or lightning). Additionally, my floaters have increased slightly. I...
Dr. Gao Pilin Reply:
Hello Anan: In fact, people with myopia often experience symptoms of floaters. This is a natural degeneration of the vitreous body. This phenomenon usually persists for a long time, and if examinations show no issues, there is no need for excessive anxiety. However, if there are ...[Read More] Understanding Vitreous Degeneration and Its Impact on Retinal Health
Understanding Vision Loss After Head Injury: Tumor or Other Causes?
Visual field defect Recently, I had an accident while riding a bike, resulting in a long laceration on my forehead. Initially, my vision became blurred on the left side of both eyes. I underwent a visual field test, which confirmed there were issues with my vision. A CT scan show...
Dr. Cai Wenyuan Reply:
Hello, based solely on your description, it is quite difficult to answer your question. However, it is uncommon for a cycling accident to result in visual field loss unless there is a severe brain injury. Severe brain injuries should be detectable through a CT scan. Wishing you s...[Read More] Understanding Vision Loss After Head Injury: Tumor or Other Causes?
Understanding Retinal Issues: Tears, Flashes, and When to See a Doctor
Retinal issues? 1. I would like to ask what the difference is between a retinal tear and a retinal hole. 2. When I close my eyes to sleep at night, I often feel a flickering mass in front of my eyes that keeps flashing. Is this a sign of retinal traction? 3. What situations t...
Dr. Cai Wenyuan Reply:
1. Two terms can essentially represent the same thing. 2. The phenomenon you described can be explained as follows. 3. Regular check-ups are generally recommended; if there is a decline in vision or loss of visual field, one should seek medical attention immediately. 4. Flashes t...[Read More] Understanding Retinal Issues: Tears, Flashes, and When to See a Doctor
Understanding High Myopia: Common Concerns and Eye Health Questions
Myopia issues? Hello Doctor, I would like to ask you about my condition. I have high myopia (approximately -1150 diopters), and the optical shop provided me with glasses with -1050 diopters. However, when I wear them, my eyes tend to feel strained, so I only wear them when I ne...
Dr. Gao Pilin Reply:
Hello: 1. No, this way your eyes will feel more comfortable. 2. The refractive error can change depending on the tension of the ciliary muscle in your eyes. If the measurements are unstable, it may be necessary to use a cycloplegic agent before retesting for more accurate results...[Read More] Understanding High Myopia: Common Concerns and Eye Health Questions
Understanding Diplopia and Vision Testing: Key Insights for Patients
Diplopia and Visual Examination Continuing from consultation number 113459: Please clarify for Dr. Gao: 1. What are the potential subsequent effects on the vision of the wearer when using glasses based on the refraction data from 105/09/13 K Optical? 2. In cases of binocular or m...
Dr. Gao Pilin Reply:
Hello Mr. Kuo: 1. If wearing them is comfortable, there should be no subsequent impact on your vision. However, if you can see clearly without astigmatism correction, it is best not to wear them. 2. If double vision occurs, the distance of objects may have a significant impact, ...[Read More] Understanding Diplopia and Vision Testing: Key Insights for Patients
Understanding Visual Disturbances: When Your Eyes See Static
The vision appears distorted, similar to a poor television signal? Hello Doctor: Occasionally (sometimes once a year, sometimes once a day), I experience visual disturbances where my vision appears to have slight interference, resembling a poor television signal. The disturbances...
Dr. He Jianxian Reply:
Based on your description, it is likely a symptom of a subtype of migraine. This condition does not typically involve headaches, but due to abnormal electrical discharges in the brain, it can lead to what is known as "visual aura." There will be no abnormalities found i...[Read More] Understanding Visual Disturbances: When Your Eyes See Static
How to Prevent Eyelid Swelling: Tips for Managing Eye Pressure
Eyelid edema Hello Dr. Tsai, I was diagnosed with a cup-to-disc ratio of 0.8 in July of this year, and the OCT examination showed the degree of cupping in the yellow to red range. My visual field test was normal, and the doctor advised me to continue monitoring. I also researched...
Dr. Cai Wenyuan Reply:
A cup-to-disc ratio of 0.8 does not necessarily indicate glaucoma, and there is no need to elevate your pillow while sleeping. Let's try this approach first, thank you.[Read More] How to Prevent Eyelid Swelling: Tips for Managing Eye Pressure
Understanding Floaters: When to Worry About Eye Symptoms
Floaters issue? Hello Dr. Kao, I have floaters and can see cotton-like shapes and black dots. My myopia is -4.00 and -3.00 (with one eye having astigmatism of -1.50). About a month and a half ago, I underwent a dilated eye exam, and the results were normal. Last Monday, I overs...
Dr. Gao Pilin Reply:
Hello, G: The phenomenon of increased floaters can sometimes occur, indicating that there may be some changes in your vitreous body. If there is no significant increase, no flashes of light, or no visual field loss, you can actually monitor it yourself without too much concern. H...[Read More] Understanding Floaters: When to Worry About Eye Symptoms