Understanding Visual Disturbances: What Causes Rain-Like Sensations?
Seeing a sensation like rain? Lying in bed and looking at the ceiling can create a sensation similar to television static, without any actual colors, akin to the feeling of misty rain when it’s not actually raining. It seems to move around erratically rather than just falling str...
Dr. Gao Pilin Reply:
Hello, it may be snow blindness, which is a type of neurological issue. If the ophthalmological examination shows no problems, you might consider consulting a neurologist.[Read More] Understanding Visual Disturbances: What Causes Rain-Like Sensations?
Understanding Floating Black Spots in Low Light Conditions
Seeing flickering spots in the dark? Hello Doctor, I have noticed that recently in the dark, I see some jumping black dots with my eyes, and the longer I look, the more pronounced they become. However, I do not see them in the morning, and my vision has not deteriorated or been a...
Dr. Gao Pilin Reply:
Hello Wei: If you can still see moving black spots in complete darkness, this may be a visual hallucination. However, most of the time, it is a physiological phenomenon. If it's floaters, they should be visible during the day. In a completely dark environment, they may not b...[Read More] Understanding Floating Black Spots in Low Light Conditions
Is My Eye Condition a Sign of Tractional Retinal Detachment?
Is my condition a precursor to tractional retinal detachment? Hello Doctor: I used to have a habit of improperly massaging my eyeballs, but I have since stopped. I already have floaters and high myopia. Recently, I started experiencing a flickering sensation in my entire field of...
Dr. Gao Pilin Reply:
Hello, your situation is similar to flashes caused by vitreous pulling on the retina. If the doctor has examined you and found no issues, you can feel reassured, as any tears or detachments should be detectable during the examination.[Read More] Is My Eye Condition a Sign of Tractional Retinal Detachment?
Understanding Eye Flashes: Causes and Concerns for Retinal Health
Flashes of light in the eyes? I have floaters and retinal degeneration. A few days ago, while trying to swat a mosquito, I noticed flashes in the corner of my eye when moving my eyeball. However, during the day and at night, when my eyes are closed or when I look at things, there...
Dr. He Jianxian Reply:
This phenomenon, commonly referred to as "photopsia," represents the tension created between the vitreous body and the retina during rapid eye movements. If these flashes occur too frequently, it is essential to undergo a dilated eye examination to prevent any potential...[Read More] Understanding Eye Flashes: Causes and Concerns for Retinal Health
Understanding Vitreous Detachment: Common Concerns and Eye Health Tips
Some questions regarding posterior vitreous detachment? Hello Doctor, my eyesight is approximately -2.00 diopters in both eyes. Currently, I have been experiencing posterior vitreous detachment in my left eye for about four months. The frequency of flashes has decreased since the...
Dr. He Jianxian Reply:
1. Once the vitreous has completely detached from the retina, the traction on the retina essentially disappears. As long as no retinal tears occurred during the process, the retina should not become more fragile, and engaging in regular strength training should generally not pose...[Read More] Understanding Vitreous Detachment: Common Concerns and Eye Health Tips
Can Visual Field Loss Occur with Photopsia? Understanding Eye Health
Is it possible for vision loss to occur in the visual field area affected by photophobia? Hello Doctor: Recently, I have noticed a small area in my monocular visual field where I see light spots similar to photopsia when I close my eyes. Given that I am at an age where ocular fun...
Dr. He Jianxian Reply:
To confirm your issue, you only need to schedule a standard visual field test. It is recommended that you arrange this at a hospital. Dr. He Jianxian, Ophthalmology Department, Nantou Hospital.[Read More] Can Visual Field Loss Occur with Photopsia? Understanding Eye Health
Understanding Eye Flashes: Causes and Concerns for Your Vision
There is a sensation of flashes in the eyes? Hello Doctor, I have myopia with -5.00 in my left eye and -4.00 in my right eye, along with astigmatism of -3.00 in my left eye and -4.00 in my right eye. I would like to ask about sudden flashes of light that occur when I open my eyes...
Dr. Gao Pilin Reply:
Hello, Bai Bai: Flashes may be caused by the vitreous pulling on the retina. However, this pulling usually does not result in retinal tears, and if the examination shows no issues, you can simply monitor the situation. The shadows caused by floaters and those from vitreous degene...[Read More] Understanding Eye Flashes: Causes and Concerns for Your Vision
Understanding Blurry Vision: Causes and Concerns for Eye Health
Blurred vision Hello, I have myopia of -3.50 diopters and astigmatism ranging from -2.75 to over -3.00 diopters (I’m not sure why the astigmatism measurements sometimes vary; isn’t the degree of astigmatism supposed to remain relatively stable?). I have had floaters since childho...
Dr. Gao Pilin Reply:
Hello, Apple: This could be a phenomenon caused by vitreous degeneration. When the posterior vitreous detaches, fluid can enter the cavity, leading to temporary blurriness. It should return to normal afterward.[Read More] Understanding Blurry Vision: Causes and Concerns for Eye Health
Understanding Occasional Shadows in Vision: Causes and Concerns
Occasionally, small shadows may appear in the field of vision? Hello Doctor, as mentioned in the subject, I have recently noticed small shadows appearing in my line of sight, but they disappear immediately when I focus or move my eyes. They do not persist for a long time. What co...
Dr. Gao Pilin Reply:
Hello, Xiang: This is called floaters. There is no specific treatment for this condition, but it may change over time. The floaters may still be present, while the flashes may gradually improve.[Read More] Understanding Occasional Shadows in Vision: Causes and Concerns
Understanding Indirect Ophthalmoscopy for Macular and Nerve Disease Detection
Fundus examination Hello Doctor: I have high myopia and floaters. In a few days, I will be going to a general clinic for a fundus examination, where the doctor will use an indirect ophthalmoscope. Can this method detect macular degeneration and neurological diseases? If not, what...
Dr. Gao Pilin Reply:
Hello: A dilated eye exam can initially screen for the possibility of abnormalities. For a more detailed examination, OCT (Optical Coherence Tomography) and visual field tests can be performed. Please consult your physician to see if further testing is necessary.[Read More] Understanding Indirect Ophthalmoscopy for Macular and Nerve Disease Detection
Understanding Eye Floaters and Flashing Lights: What You Need to Know
Experiencing floaters and flashes of light when sleeping in the dark? Doctor, I apologize for the interruption. A few days ago, I asked a question, and you mentioned, "If the flashes occur after the examination, further investigation is needed." I forgot to add that I a...
Dr. Gao Pilin Reply:
Hello, Kai: Fatigue should not cause flashes; movement causing flashes is more likely related to vitreous traction.[Read More] Understanding Eye Floaters and Flashing Lights: What You Need to Know
Understanding Visual Impairment: Key Questions and Insights on Eye Health
Visual impairment Hello, I saw the standards for visual impairment online, and there are two criteria for mild visual field loss: 1. For the central 24-degree program on the automated perimetry, an average defect greater than 25 dB (exclusive) is required. 2. For the central 30-d...
Dr. Gao Pilin Reply:
Hello, S: Currently, the central 30 degrees should be used as a reference for visual field defects, which are not easily noticeable without examination. Retinal degeneration can lead to visual field loss, typically more severe in areas with light, which will appear clearer. When ...[Read More] Understanding Visual Impairment: Key Questions and Insights on Eye Health
Seeing Flashes in the Dark: Eye Health Concerns from Phone Use
Using a mobile phone in the dark can cause flashes of light in the eyes? I usually don't turn off the lights while using my phone at night, but for the past few days, I've been sharing a room with others and have turned off the lights to use my phone for three consecuti...
Dr. Gao Pilin Reply:
Hello, Qing: This is likely a flash of light caused by vitreous traction on the retina. It is usually harmless and won't improve with rest; it may persist for a considerable amount of time. However, the concern is whether there is any retinal damage, so it is necessary to ha...[Read More] Seeing Flashes in the Dark: Eye Health Concerns from Phone Use
Understanding Pupil Shadows Upon Waking: Is It Normal?
Upon waking, there are shadows of the pupils on the glasses? I woke up today with a shadow in my left eye that looks like a black pupil shadow, somewhat similar to the sensation of seeing floaters during a dilated eye exam with a flashlight. When I close my eyes, I can still see ...
Dr. Gao Pilin Reply:
Hello, this sensation is likely related to floaters. If the shadows are temporarily gone, you can observe it on your own. However, if they reappear or increase in number, you should seek an examination.[Read More] Understanding Pupil Shadows Upon Waking: Is It Normal?
Understanding Blue Shadows in Vision: Causes and Solutions for Eye Issues
Seeing blue in the eyes? Hello Doctor, I am currently facing a situation where the ophthalmology clinics are closed for the Qingming Festival, so I would like to ask about my personal condition: I have dry eye syndrome, myopia in both eyes of approximately 200 degrees, and I expe...
Dr. Liang Ce Reply:
I recommend that you 1. discuss the above situation further with your attending physician to determine if additional examinations are necessary. 2. consider switching to an ophthalmology outpatient clinic at a medical center or large hospital. Thank you, and wish you good health![Read More] Understanding Blue Shadows in Vision: Causes and Solutions for Eye Issues
Understanding Black Shadows in Vision: Signs of Retinal Issues?
Closing one eye results in seeing shadows? When I open my left eye, I see a blurry black shadow in the lower right corner, which disappears after a moment. However, it reappears when I close my eyes and then open them again. Aside from this issue, everything else seems normal. Is...
Dr. Gao Pilin Reply:
Hello, Xiao Huang: This is likely a phenomenon of floaters, which is not necessarily a problem with the retina. However, it is still recommended that you get it checked again, as there was a previous hole, so please be cautious.[Read More] Understanding Black Shadows in Vision: Signs of Retinal Issues?
Understanding Flashing Lights and Floaters in High Myopia Patients
Experiencing floaters and seeing flashes of light when turning off the lights at night? Hello Doctor, I have high myopia. In February of this year, I was diagnosed with floaters at an ophthalmology clinic. After a while, I noticed flashes of light in my vision. I went to the hosp...
Dr. Cai Wenyuan Reply:
Observe the symptoms, and if they persist, seek medical evaluation.[Read More] Understanding Flashing Lights and Floaters in High Myopia Patients
Understanding Flashing Lights and Floaters: Eye Health Insights
Experiencing floaters and flashes of light when turning off the lights to sleep? Doctor, I apologize for the interruption. A few days ago, I asked a question [#180162](https://adoctor.tw/article/180162), and you mentioned, "If the flashes occur after the examination, further...
Dr. Gao Pilin Reply:
Hello, Kai: The flashes are likely not related to fatigue; they are probably caused by the vitreous pulling on the retina. If there are no significant changes, you can monitor it yourself. If they increase or worsen, please return for a follow-up.[Read More] Understanding Flashing Lights and Floaters: Eye Health Insights
Understanding Eye Flashes: Causes and Concerns for Computer Users
Flashes of light in the eyes? Hello, Doctor. I have had floaters since childhood, and recently, when I blink rapidly or squint hard, I sometimes see a horizontal black line at a specific location (similar to the black area after a camera flash), which lasts from a few minutes to ...
Dr. Gao Pilin Reply:
Hello Mr. Ching: If this is a recent occurrence, I recommend that you visit an ophthalmologist for an examination. Pupil dilation is not a concern and will not harm your eyes.[Read More] Understanding Eye Flashes: Causes and Concerns for Computer Users
Understanding Flashing Lights and Floaters in High Myopia Patients
Experiencing floaters and flashes of light when turning off the lights at night? Hello, Doctor. I have high myopia, and in February of this year, I was diagnosed with floaters at an ophthalmology clinic. I also went to the hospital for an examination in early March, and there wer...
Dr. Gao Pilin Reply:
Hello, Kai: If the flashes occurred after the examination, you should have it checked again. If everything is fine, you can monitor it on your own.[Read More] Understanding Flashing Lights and Floaters in High Myopia Patients