Understanding Sudden Flashing Lights in Vision: Causes and Concerns
Sudden appearance of flashing lights in the vision, resembling visual noise? Hello, doctor. Recently, due to paperwork, I have been spending a lot of time in front of the computer screen. However, this afternoon and evening, after using the computer for about an hour, I experienc...
Dr. Gao Pilin Reply:
Hello Ashu: Usually, seeing flashes of light is caused by traction on the retina. Sometimes it lasts for a short time, just a quick flash, and there may not be any changes in vision; it is not related to fatigue, and warm compresses are not very helpful. If there are no abnormali...[Read More] Understanding Sudden Flashing Lights in Vision: Causes and Concerns
Understanding Post-Laser Treatment Symptoms for Retinal Issues
Questions Related to Post-Retinal Laser Treatment Dear Dr. Gao, Thank you very much for taking the time to answer my questions. About a year ago, I discovered that I had retinal tears in both my left and right eyes, and both underwent laser treatment. During my follow-up visit i...
Dr. Gao Pilin Reply:
Hello, Yunyun: Usually, seeing flashes of light is primarily caused by the vitreous pulling on the retina, while seeing black lines or floaters is known as floaters syndrome. This type of pulling is generally harmless, so as long as there is no further retinal damage upon examina...[Read More] Understanding Post-Laser Treatment Symptoms for Retinal Issues
Understanding Eye Floaters: Causes, Concerns, and Treatment Options
Eye problems Hello Doctor, I have had floaters in my eyes for a long time, but I have never had a specific examination for them. I was able to ignore them before, but recently they have become particularly noticeable, to the point where I can see them with just one eye, which mak...
Dr. Gao Pilin Reply:
Hello: The presence of floaters in your vision is likely due to vitreous floaters, which are unrelated to dry eyes. You should inform your physician about the increase in floaters and undergo a retinal examination. If everything is normal, vitreous floaters are generally not a co...[Read More] Understanding Eye Floaters: Causes, Concerns, and Treatment Options
Understanding Floaters: Eye Health, Causes, and Prevention Tips
Floaters and Eye Care Hello, doctor. I have noticed some dot-like and sheet-like objects drifting with my line of sight. I previously underwent dilated eye examinations at the clinic, once in March and once in June, and the doctors said there were no significant issues. They conf...
Dr. Gao Pilin Reply:
Hello, A-Zhe: 1. Can a fundus examination differentiate between physiological and degenerative floaters, or can it only distinguish pathological ones? Answer: A fundus examination for floaters is primarily to check for retinal abnormalities; floaters in the vitreous may not alw...[Read More] Understanding Floaters: Eye Health, Causes, and Prevention Tips
Post-Retinal Detachment Surgery: Common Concerns and Recovery Tips
Post-retinal detachment surgery Hello Doctor, I had retinal detachment surgery a month ago. The gas has dissipated, and I have returned to my normal sleeping position. Two weeks ago, I noticed floaters and flashes of light, and after a dilated eye exam at the clinic, they said th...
Dr. Gao Pilin Reply:
Hello, Hong Hong: 1. If there are no changes or increases in floaters and flashes, and since you have already been checked with no new retinal tears, it should be considered a normal phenomenon. 2. However, you need to closely monitor any changes in your vision and visual field,...[Read More] Post-Retinal Detachment Surgery: Common Concerns and Recovery Tips
Understanding Black and White Spots in Your Vision: Is It Floaters?
Seeing black dots on the outer edge and white dots in the center of the vision? I usually have mild floaters, where I see one or two small dots in the sunlight. However, I just noticed one that has a black outer circle and a white inner circle. Is this also a type of floater?
Dr. He Jianxian Reply:
Floaters can present in many different forms and shapes, and the images you see may also be another floater.[Read More] Understanding Black and White Spots in Your Vision: Is It Floaters?
Concerns About Retinal Thinning and Air Travel Safety
Regarding retinal thinning and flying issues? Good evening, Director. I apologize for interrupting your busy time! I have referred to previous questions from others, but it seems there are no similar inquiries, so I would like to ask you—my father has a history of two retinal tea...
Dr. He Jianxian Reply:
Basically, if there are issues with the retina, an annual follow-up examination once or twice is sufficient. If a recent follow-up has been done, there is no need to have another examination specifically for flying. Air travel should not cause retinal tears. Generally, just be ca...[Read More] Concerns About Retinal Thinning and Air Travel Safety
Understanding Post-Laser Symptoms: Watermark Vision After Retinal Treatment
Retinal laser treatment, water stain marks? Hello Director Gao, I apologize for disturbing you. I have myopia of 800 degrees in both eyes and experience floaters. I have an eye exam every six months, and two months ago, I underwent retinal laser treatment in both eyes. However, t...
Dr. Gao Pilin Reply:
Dear troubled university student, This situation is indicative of vitreous liquefaction. The liquefied vitreous humor flows within the cavity, which can create a sensation similar to that of liquid moving. Over time, there may be various changes, and it might also become less no...[Read More] Understanding Post-Laser Symptoms: Watermark Vision After Retinal Treatment
Understanding Retinal Issues: Managing Blurry Vision and High Myopia
Retinal issues causing blurred vision? Hello, Doctor. Today, I noticed that my distance vision in my left eye is blurry, so I immediately went to see an ophthalmologist. Additionally, my left eye has elevated intraocular pressure. The doctor promptly arranged for a dilated eye ex...
Dr. Gao Pilin Reply:
Hello, 1. The doctor mentioned that a thinner peripheral retina is a common condition among individuals with high myopia and advised not to panic. Is that correct? Answer: Yes, that is correct. People with myopia tend to have larger eyeballs, which results in a thinner periphe...[Read More] Understanding Retinal Issues: Managing Blurry Vision and High Myopia
Understanding Floaters, Myopia, and Allergic Conjunctivitis: Key Insights
Floaters, myopia, allergic conjunctivitis? Hello Doctor, I have been seeing transparent lines or small black dots in my vision, with about one on the left and two on the right. I have a prescription of -6.00 diopters and astigmatism of -1.25, indicating high myopia. I would like ...
Dr. Gao Pilin Reply:
Hello, Ah Yu: 1. About six months ago, I had a dilated eye exam, and there were no issues with my macula. Is there anything specific I need to pay attention to? Answer: Just keep an eye on your vision; if you notice any changes from your usual sight, please consult a doctor im...[Read More] Understanding Floaters, Myopia, and Allergic Conjunctivitis: Key Insights
Diagnosing Posterior Vitreous Detachment: Tools Beyond OCT
Posterior vitreous detachment Hello! If "posterior vitreous detachment" cannot be detected using OCT, what other instruments can be used for diagnosis? Is dilation the only way to visualize it? Thank you for your response!
Dr. Gao Pilin Reply:
Hello, Xiao Chen: The vitreous body is actually transparent, and posterior vitreous detachment is not easily visible to the naked eye. Sometimes, the Weiss ring, which indicates the vitreous pulling away from the optic nerve, can be observed to help in diagnosis. Therefore, it is...[Read More] Diagnosing Posterior Vitreous Detachment: Tools Beyond OCT
Understanding Visual Phenomena: Floaters and Blind Spots Explained
Monocular vision obstruction at certain angles in the dark? Hello, Doctor Gao. I would like to ask you a couple of questions. I have been experiencing floaters for about 20 years. After undergoing laser treatment for a retinal tear, I have been consistently visiting the clinic fo...
Dr. Gao Pilin Reply:
Hello Andres: 1. If it is floaters, there are no methods to reduce their occurrence frequency. 2. The physiological blind spot is located just outside the center of the visual field and is generally at the same horizontal level as the center of the visual field. If this is the ca...[Read More] Understanding Visual Phenomena: Floaters and Blind Spots Explained
Understanding Floaters and Flashes: Do They Require Ongoing Monitoring?
Floaters and flashes? I have a problem with floaters and have experienced flashes of light. I have undergone two fundus examinations, both of which showed no issues. I would like to know if the flashes are caused by the floaters. If the examinations have shown no problems, is it ...
Dr. Gao Pilin Reply:
Hello, Wei: Flashes and floaters are both caused by the degeneration of the vitreous body. The examination showed no issues, and if there are no changes, regular follow-ups are not necessary. Generally, weight training does not cause harm. However, straining while holding your br...[Read More] Understanding Floaters and Flashes: Do They Require Ongoing Monitoring?
Understanding Floaters: Eye Health, Symptoms, and Management Tips
Floaters and Fundus Examination Hello Doctor: I am 26 years old, with myopia of -7.75 diopters in my left eye and -6.50 diopters in my right eye (both eyes have astigmatism below 25 degrees). After graduating from university, I have been working long hours on the computer for abo...
Dr. He Jianxian Reply:
1. No, it won't. 2. Judging by the duration, it doesn't seem like it; it resembles an afterimage more. 3. Avoid lifting things suddenly with force; slowing down has less impact on the eyes. 4. This requires self-adjustment.[Read More] Understanding Floaters: Eye Health, Symptoms, and Management Tips
Understanding Visual Disturbances: Shadows, Afterimages, and Conjunctivitis
After seeing red light in the dark, the eyes immediately perceive a cyan-green afterimage, along with conjunctivitis and retinal issues? Hello, I have high myopia. I just had an eye examination in March of this year (which included OCT and slit lamp examination of the retina). Th...
Dr. He Jianxian Reply:
1. Afterimages are a normal phenomenon and should not be a cause for concern. 2. It may feel like floaters. 3. I cannot answer without knowing what you are describing. 4. Conjunctivitis and eye discharge are not significantly harmful to the eyes, but they can cause discomfo...[Read More] Understanding Visual Disturbances: Shadows, Afterimages, and Conjunctivitis
Understanding Vitreous Liquefaction and Its Impact on Floaters
Floaters I would like to ask the doctor, how long does it typically take for a person to reach complete liquefaction of the vitreous body as it continues to liquefy? Once complete liquefaction is achieved, does it mean that the number of floaters will no longer increase? Or, afte...
Dr. Gao Pilin Reply:
Hello Liu Haha: Achieving complete liquefaction is unlikely. The greater the degree of liquefaction, the larger the area of movement for the floaters. When the body is upright, it is possible for them to sink and not obstruct the central field of vision, making them less noticeab...[Read More] Understanding Vitreous Liquefaction and Its Impact on Floaters
Impact of Welding Flash on Retinal Health: Risks and Recovery
The effects of arc welding flash on the retina? Hello Doctor: I have high myopia (left eye -775, right eye -650) and experience floaters. I work in a factory and occasionally come into contact with welding-related tasks. This afternoon, while working, I accidentally looked direct...
Dr. Gao Pilin Reply:
Hello, Ashu: 1. The ultraviolet rays generated during welding can more easily cause damage to the cornea, but there should be no significant harm to the retina in a short period of exposure. 2. The black shadow experienced at that moment is due to the metabolism of rhodopsin in ...[Read More] Impact of Welding Flash on Retinal Health: Risks and Recovery
Understanding Visual Disturbances: Bright Lines in One Eye Explained
When I squint my right eye, I see a bright line or streak? Hello, I have high myopia, and for the past two months, when I squint my eyes, I see a bright line in my right eye. When looking at a bright sky, if I continue to squint, I see two small dark spots. When observing objects...
Dr. Gao Pilin Reply:
Hello, Rainbow: Based on your situation, it seems like you may be experiencing symptoms of floaters. Please take the time to visit an ophthalmologist for a thorough examination to confirm this. Since you have high myopia, it would also be advisable to check your retina. The ophth...[Read More] Understanding Visual Disturbances: Bright Lines in One Eye Explained
Understanding Eye Discomfort: Is It Nearsightedness or Aging?
My eyes don't feel quite right? Hello, Doctor. I have mild myopia, floaters, and vitreous detachment. At the end of April, I noticed discomfort when looking at nearby objects; I can hardly focus for long periods, and there is a sensation of swelling. The ophthalmologist said...
Dr. Gao Pilin Reply:
Hello Mr. U: Based on your symptoms, it seems to resemble presbyopia. Presbyopia is a condition where the eye's ability to focus on close objects decreases, requiring more effort to see them clearly. It is not exclusively associated with aging. If this condition does not imp...[Read More] Understanding Eye Discomfort: Is It Nearsightedness or Aging?
Understanding Floaters and Flashes: Signs of Retinal Issues?
Floaters and flashes? Hello, Doctor: I have had floaters since elementary school, but I only started having follow-up examinations in high school. A month ago, I underwent a dilated eye exam, which showed no issues. However, recently I have been experiencing the following problem...
Dr. Gao Pilin Reply:
Hello Lele: The symptoms of floaters can change over time, and these symptoms may sometimes be associated with retinal pathology. It is not possible to predict whether these symptoms are accompanied by retinal changes; only an examination can confirm this. Therefore, the safest a...[Read More] Understanding Floaters and Flashes: Signs of Retinal Issues?