Understanding Vitreous Degeneration and Its Impact on Vision
Vitreous degeneration & retina Hello Doctor: 1. I have myopia of -5.50 and -6.00, and I've had floaters since I was 23. Recently, I've been experiencing intermittent flashes of light in my right eye. A dilated fundus examination showed no abnormalities, and the do...
Dr. Gao Pilin Reply:
Hello May: 1. As the vitreous slowly detaches from the retina, the pulling sensation will gradually diminish, and the perception of light will improve. 2. When the eyeball turns to the side, it experiences pressure, which can cause the perception of white light; this is normal. 3...[Read More] Understanding Vitreous Degeneration and Its Impact on Vision
Understanding Physiological Blind Spots and Visual Distortions
Questions about physiological blind spots? My left eye has a prescription of nearly 800 to 900, while my right eye is 750. I have a significant number of floaters in both eyes, which has been a longstanding issue. I have been taking lutein for over a year, and during my annual he...
Dr. Gao Pilin Reply:
Hello, Hsuan: The blind spot refers to an area where no visual information is perceived. Are you referring to the regions surrounding the blind spot? The blind spot is located at the optic nerve head, and in cases of high myopia, there may be some traction or undulation of the re...[Read More] Understanding Physiological Blind Spots and Visual Distortions
Understanding Eye Drops: Concerns About Dry Eyes and Flashing Lights
Eye drop issues? Hello Doctor, I have been visiting an ophthalmologist for the past month due to issues with dry eyes and floaters. On Wednesday, I had my first fundus examination, and the retina appeared normal. The doctor prescribed artificial tears and methacholine eye drops (...
Dr. Cai Wenyuan Reply:
Hello: You can continue to observe and keep taking the medication. Wishing you safety and health. Sincerely, Dr. Cai Wenyuan, Director of the Department of Ophthalmology, Taoyuan General Hospital, Ministry of Health and Welfare.[Read More] Understanding Eye Drops: Concerns About Dry Eyes and Flashing Lights
Understanding Eye Flashes: Are They Linked to Migraines or Eye Issues?
Bright spots when closing the eyes? During my shower, I closed my eyes and noticed bright spots (yellow, crescent-shaped) when I opened them, I saw greenish-blue bright spots (somewhat crescent-shaped). This has happened about two or three times in the past. I have floaters and i...
Dr. Gao Pilin Reply:
Hello, those who are troubled: Based on your description, it seems to be related to migraines. In addition to the jagged bright patterns, migraines can also present as the pea-shaped light spots you mentioned. It would be advisable to consult a neurologist to rule out the possibi...[Read More] Understanding Eye Flashes: Are They Linked to Migraines or Eye Issues?
Understanding High Eye Pressure: Is Thick Cornea a Shield Against Glaucoma?
Intraocular pressure issues? Hello Doctor, my intraocular pressure has been consistently high, around 22-23. Previously, my fundus examination was normal. Recently, I visited an ophthalmology clinic where the doctor performed an OCT scan. He was quite surprised to find that my co...
Dr. Gao Pilin Reply:
Hello Mr. Huang: Your corneal thickness is relatively high, which can result in elevated intraocular pressure measurements; however, there is still a possibility of developing glaucoma. The measured intraocular pressure may be significantly higher than the standard. The doctor ...[Read More] Understanding High Eye Pressure: Is Thick Cornea a Shield Against Glaucoma?
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 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
Understanding High Eye Pressure: Risks, Treatments, and Care Tips
Intraocular pressure issues? Hello Doctor, I have been experiencing consistently elevated intraocular pressure, usually around 22-23 mmHg. I have had a comprehensive eye examination at a major hospital, and my fundus examination appeared normal. I would like to ask if having this...
Dr. Cai Wenyuan Reply:
Hello, intraocular pressure is not the sole criterion for diagnosing glaucoma; regular monitoring is sufficient. Reducing the use of electronic devices and allowing your eyes to rest is beneficial. Corneal thickness can affect the accuracy of intraocular pressure readings; genera...[Read More] Understanding High Eye Pressure: Risks, Treatments, and Care Tips
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 Occasional Rainbow Vision: Causes and When to Seek Help
Occasional visual aura? Hello Dr. Tsai, Recently, I've been experiencing eye fatigue and occasionally seeing faint rainbow halos around streetlights (the color layering is not very pronounced). A month ago, I had my eyes checked for refractive error, astigmatism, and fundus...
Dr. Cai Wenyuan Reply:
Hello, it should not be glaucoma; observation is sufficient. Wishing you peace and health. Sincerely, Dr. Tsai Wen-Yuan, Director of the Department of Ophthalmology, Taoyuan General Hospital, Ministry of Health and Welfare.[Read More] Understanding Occasional Rainbow Vision: Causes and When to Seek Help
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 the Link Between Retinal Detachment, Glaucoma, and Steroid Use
Glaucoma, retinal detachment, corticosteroids? My father does not have myopia and has been retired for several years. A few years ago, he suddenly experienced retinal detachment, and after treatment, he underwent cataract surgery a few months later. Recently, his intraocular pres...
Dr. Cai Wenyuan Reply:
Hello: High myopia is primarily assessed through intraocular pressure and retinal examination. It is important to monitor changes in intraocular pressure when taking steroids. Wishing you peace, health, and well-being. Sincerely, Dr. Tsai Wen-Yuan, Director of Ophthalmology, Taoy...[Read More] Understanding the Link Between Retinal Detachment, Glaucoma, and Steroid Use
Understanding Flickering White Spots in Vision: Causes and Concerns
Seeing faint, densely packed flickering dots? Hello Doctor: I see a multitude of transparent white spots flickering (in fixed positions), with a faint layer, particularly severe in indoor or dark environments, or when looking at black surfaces, lasting for over four months. I hav...
Dr. Gao Pilin Reply:
Hello Kentaro: The most likely reason is that the vitreous body is pulling on the retina, stimulating the photoreceptor cells in the inner layer of the retina, which causes a disruption in the electrical signals of the retina, resulting in the perception of flashes or lightning-l...[Read More] Understanding Flickering White Spots in Vision: Causes and Concerns
Understanding Eye Discomfort and Brightness Perception Issues
Foreign body sensation in the eyes and issues with visual brightness? Hello Dr. Tsai, I have a few questions I would like to ask you: 1. For the past six months, I have frequently felt a foreign body sensation in my left or right eye. When I look in the mirror, I notice some oi...
Dr. Cai Wenyuan Reply:
Hello, 1. It is best to follow the physician's instructions. 2. No. 3. There should be no issues. Wishing you peace and good health. Sincerely, Dr. Cai Wenyuan, Director of the Department of Ophthalmology, Taoyuan General Hospital, Ministry of Health and Welfare.[Read More] Understanding Eye Discomfort and Brightness Perception Issues
Understanding Retinal Issues: Symptoms, Treatments, and Prevention
Retinal issues Hello Doctor: I have myopia in both eyes with a degree of -6.50 diopters and have been experiencing floaters for about 7 years, with a count of 10 or fewer small to medium-sized spots in both eyes. Recently, after prolonged computer use without breaks, I suddenly n...
Dr. Gao Pilin Reply:
Hello Engineer: 1. What is the cause of the four to five horizontal light spots in the upper left area of my left eye? Is it a symptom of vitreous pulling on the retina? Is this normal? Can it improve or will it disappear after some time? => A thorough examination is necessar...[Read More] Understanding Retinal Issues: Symptoms, Treatments, and Prevention
Sudden Black Spot in Upper Left Vision: What Could It Mean?
A sudden shadow in the upper left area of the right eye? Hello doctor, this morning when I woke up, I suddenly saw a black spot in the upper left part of my right eye that disappeared after a moment. It reappeared after an hour. Could you please tell me what this might be? I have...
Dr. Gao Pilin Reply:
Hello, this phenomenon is most commonly known as floaters. I recommend that you also have your fundus examined. If there are no issues, you can observe it with peace of mind. In Taiwan, the ophthalmology department at Puzi Hospital is open on Monday, Tuesday, Thursday, and Friday...[Read More] Sudden Black Spot in Upper Left Vision: What Could It Mean?
Understanding Eye Coordination Issues: Symptoms and Solutions
Eye misalignment Hello Doctor, I have another question. For the past few days, my left eye feels somewhat enlarged and is not coordinating well with my right eye. Sometimes, my left eye suddenly becomes blurry and feels tight, almost like an allergic reaction, and it’s uncomforta...
Dr. Gao Pilin Reply:
Hello, 雅: Based on your description, it is important to identify the cause of the eye misalignment and address it accordingly. Abnormal vision can stem from issues with either the eyes or the brain. Given your previous problem with elevated intracranial pressure, in addition to c...[Read More] Understanding Eye Coordination Issues: Symptoms and Solutions
Laser Eye Exposure: Symptoms, Treatments, and Specialist Referrals
The eye was exposed to laser light? Hello, about two months ago, I was exposed to a 532 nm green laser in an experiment (both eyes were scanned, approximately 0.1 mW, without protective goggles). I didn't notice it at the time, but I felt a flickering sensation in front of m...
Dr. He Jianxian Reply:
The damage caused by a laser is immediate. If your retina is hit by laser light, early damage should be visible during a dilated fundus examination; if it is not visible, it is likely that there is no damage. Furthermore, the energy of the laser light you were exposed to is only ...[Read More] Laser Eye Exposure: Symptoms, Treatments, and Specialist Referrals
Understanding Visual Disturbances in High Myopia: Causes and Concerns
Case Studies of Ocular Abnormalities Hello Doctor: Initially, I suspected that I was exposed to a green laser with an intensity of about 1-2 mW, which caused me to experience numerous white spots or black shadows flickering in my visual field over the past few months (similar to ...
Dr. Cai Wenyuan Reply:
Hello, myopia indicates that the image is formed in front of the retina, which is why individuals with high myopia have a longer axial length. Wishing you peace and health. Sincerely, Dr. Tsai Wen-Yuan, Director of the Ophthalmology Department, Taoyuan General Hospital, Ministry ...[Read More] Understanding Visual Disturbances in High Myopia: Causes and Concerns