Understanding Eye Floaters and Flashing Spots: Causes and Concerns
There is a fixed spot in the eye when blinking? Hello Doctor, two days ago I suddenly experienced symptoms of floaters in my eyes, and when I blink, there is a fixed dot in my left eye (which disappears quickly). I went to a clinic that day for an examination, and they told me th...
Dr. He Jianxian reply Ophthalmology
Basically, floaters are not always noticeable; they are typically observed only against a simple background. As long as a dilated eye exam shows no issues, there is no need for excessive concern. Director He Jian-xian, Ophthalmology Department, Nantou Hospital.[Read More] Understanding Eye Floaters and Flashing Spots: Causes and Concerns
Understanding Eye Issues: Myopia, Floaters, and Night Vision Concerns
Eye problems Hello Doctor, I have a few questions to ask you: 1. I have high myopia (900, 800). One night, after applying a warm compress to my right eye and turning off the lights, I suddenly experienced a blackout in the far left vision of my left eye. However, I could see agai...
Dr. He Jianxian reply Ophthalmology
Hello, you mentioned that the far left vision in your left eye suddenly went dark after turning off the lights. However, it is natural to not see anything after the lights are turned off. As for seeing bright lights after closing your eyes at night, if you were looking directly a...[Read More] Understanding Eye Issues: Myopia, Floaters, and Night Vision Concerns
Is Your Eye Discomfort a Sign of Macular Degeneration?
Discomfort in the left eye? When looking at my phone, the screen suddenly dims. I always thought it was a problem with the phone, and straight lines appear curved with distorted text. Could this be a sign of macular degeneration? After performing the Amsler Grid test, I noticed t...
Dr. He Jianxian reply Ophthalmology
It is recommended that you visit an ophthalmology clinic as soon as possible for an examination. Based on your description, the situation is unusual, and I cannot provide advice based solely on experience. Dr. He Jianxian, Ophthalmology Department, Nantou Hospital.[Read More] Is Your Eye Discomfort a Sign of Macular Degeneration?
Understanding Vitrectomy with Silicone Oil for Macular Holes
Macular Hole Repair with Silicone Oil Injection Surgery Hello Doctor, I have a macular hole. In Germany, the first gas injection surgery did not successfully resolve the hole issue, so the doctor said I need to undergo a second silicone oil injection surgery. May I ask: (1) If th...
Dr. He Jianxian reply Ophthalmology
In the past, we have managed macular holes using the gas tamponade and face-down positioning method. Of course, not every patient will have a successful outcome, but generally, if it is unsuccessful, it does not tend to worsen. As for the use of silicone oil in treating macular h...[Read More] Understanding Vitrectomy with Silicone Oil for Macular Holes
Understanding Brief Blackouts in Vision: Causes and Solutions
Flashes of darkness in the vision? Since last year, I have occasionally experienced a brief moment of darkness in my vision (for a few seconds), similar to when a light is turned off and then quickly turned back on. I had examinations by both an ophthalmologist and a neurologist,...
Dr. He Jianxian reply Ophthalmology
Among the symptoms you mentioned, the most concerning is the sudden loss of vision. If your vision blackout lasts for several seconds to tens of seconds (rather than just a fraction of a second as you mentioned), it may raise suspicion of a thrombotic issue. If that is the case, ...[Read More] Understanding Brief Blackouts in Vision: Causes and Solutions
Impact of Prolonged Crying on Eye Health: Risks and Concerns
Eye swelling and pulling pain in the eyes? Hello, due to crying for too long and too intensely, I often experience a pulling pain in my eyeball, although it only lasts for a short time. I would like to ask what effects prolonged and intense crying can have on the eyes, and whethe...
Dr. He Jianxian reply Ophthalmology
Crying for too long should not lead to blindness; however, if you continuously rub or wipe your eyes during that time, it could potentially cause damage to the surface of the eyeball. This is for your reference. Dr. Ho Chien-Hsien, Ophthalmology Department, Nantou Hospital.[Read More] Impact of Prolonged Crying on Eye Health: Risks and Concerns
Is It Flashing? Understanding Visual Disturbances After Darkness
Is this a flash? After spending some time in a dark place, such as waking up in a dark room and then looking at dark objects in a bright area, I experience a flickering sensation. This also occurs when I close my eyes, but it lasts only for a short time and only happens after bei...
Dr. He Jianxian reply Ophthalmology
What you refer to as "flashes" should be understood as photopsia. Photopsia refers to the sudden appearance of sensations resembling flashes of light when the eyes move, indicating that the retina has suddenly been pulled. This is entirely different from the symptoms yo...[Read More] Is It Flashing? Understanding Visual Disturbances After Darkness
Seeing Bright Spots in Vision: Should You Worry About Retinal Issues?
Bright spots in the eyes? Recently, when I look at the computer, I often see a white dot of light suddenly appear in the upper left corner of my left eye's visual field, which quickly disappears. I am very worried that it might be retinal detachment, but my vision has consis...
Dr. He Jianxian reply Ophthalmology
Retinal detachment is generally associated with a loss of vision, so it is unlikely to be retinal detachment. However, if you continue to experience these symptoms, it is advisable to schedule a dilated eye examination with an ophthalmologist. This is for your reference. Dr. Ho C...[Read More] Seeing Bright Spots in Vision: Should You Worry About Retinal Issues?
Understanding Choroidal Neovascularization: Eylea Treatment and Recovery Tips
Choroidal neovascularization Hello, doctor. I have high myopia that has led to the proliferation of blood vessels in the macula. Three days ago, I received an Eylea injection treatment, and the doctor informed me that the medication may take 1 to 2 weeks to take effect. I would l...
Dr. He Jianxian reply Ophthalmology
The efficacy of this medication is expected to diminish within a month. Therefore, if the condition recurs, it will be necessary to administer another dose after one month. The effectiveness should be quite good, as it will promote the regression of neovascularization. While the ...[Read More] Understanding Choroidal Neovascularization: Eylea Treatment and Recovery Tips
Understanding Sudden Increases in Eye Pressure: Causes and Concerns
What are the causes of a sudden increase in intraocular pressure? Hello Doctor: In May 2019, during my health check-up, my intraocular pressure (IOP) was 14 mmHg in the left eye and 16 mmHg in the right eye, with no previous abnormalities noted. However, in April 2020, my IOP was...
Dr. He Jianxian reply Ophthalmology
Based on your clinical data, there is no significant atrophy observed in the left eye, and it is unclear whether there are any visual field defects. If there are no defects, I believe it would be reasonable to simply monitor the situation without medication. Prolonged use of the ...[Read More] Understanding Sudden Increases in Eye Pressure: Causes and Concerns
Understanding Fixed Black Spots in Vision: Causes and Concerns
There is a fixed black spot in the corner of the eye? Hello, Director! I am Min-Hsuan, 25 years old, with high myopia of -7.20 diopters in my right eye and -9.20 diopters in my left eye. I would like to consult with you regarding my right eye. When I am sitting upright, my vision...
Dr. He Jianxian reply Ophthalmology
Your spots are likely just floaters, retinal scarring, or retinal tears. Based on your description, it is not possible to determine the exact cause. It is recommended that you undergo a dilated fundus examination. If no significant findings are noted, you can rest assured. This i...[Read More] Understanding Fixed Black Spots in Vision: Causes and Concerns
Understanding Choroidal Neovascularization: Eylea Treatment and Recovery Tips
Choroidal neovascularization Hello, doctor. I have high myopia that has led to the proliferation of blood vessels in the macula. Three days ago, I received an Eylea injection treatment, and the doctor informed me that the medication may take 1 to 2 weeks to show effects. I would ...
Dr. He Jianxian reply Ophthalmology
Basically, this type of medication promotes the regression of neovascularization, and its efficacy varies from person to person, but it is generally effective. For maintenance, it is advisable to consume antioxidant-rich vegetables, fruits, and carrots. Most importantly, continuo...[Read More] Understanding Choroidal Neovascularization: Eylea Treatment and Recovery Tips
Understanding Rainbow Vision: Is It a Sign of Glaucoma?
Glaucoma with halos? Hello Doctor: I previously underwent a fundus examination due to symptoms of eye strain and floaters. The doctor mentioned it was likely natural degeneration, and my optic nerve appeared normal. I was prescribed a bottle of artificial tears. However, I recent...
Dr. He Jianxian reply Ophthalmology
What you refer to as "rainbow vision" likely pertains to a dispersion phenomenon. Dispersion typically occurs when the corneal hydration level increases. The most commonly known condition associated with this phenomenon is acute glaucoma, which can cause such effects wh...[Read More] Understanding Rainbow Vision: Is It a Sign of Glaucoma?
Understanding Circular Shadows in Bright Light: An Eye Health Inquiry
Questions Under Bright Light Hello doctor, when I work under the bright sun, if I stare at a white wall or look down at a white floor, I see a round shadow in my vision, but within that shadow, there appears to be something flowing (it stays in the same spot that I am looking at)...
Dr. He Jianxian reply Ophthalmology
Based on your description, it seems more likely that this is related to floaters. If you have undergone a dilated fundus examination and there were no issues, you probably don't need to be overly concerned about this phenomenon. Dr. He Jian-xian, Ophthalmology Department, Na...[Read More] Understanding Circular Shadows in Bright Light: An Eye Health Inquiry
Understanding Vision Loss and Eye Fatigue: When to Seek Further Evaluation
Vision loss and eye fatigue? I would like to ask the doctor, three years ago I experienced eye discomfort and a stinging sensation, along with a phenomenon of white fog that would resolve with blinking. A few days later, I noticed that my peripheral vision in the area near the bl...
Dr. He Jianxian reply Ophthalmology
Temporary visual field loss that recovers must consider several conditions. The first is thrombosis, where a blood vessel in the retina suddenly gets blocked by a thrombus, leading to a sudden loss of vision or visual field defect, which may recover suddenly after a few seconds (...[Read More] Understanding Vision Loss and Eye Fatigue: When to Seek Further Evaluation
Understanding Blurred Central Vision: Causes and Treatment Options
Central vision blur In 2018, after a retinal detachment in the left eye, I underwent vitrectomy with silicone oil infusion. Before the surgery, my vision was 1.0, but after the oil was removed, I could barely see 0.1-0.2. The macula appeared normal, and the retina was flat, but t...
Dr. He Jianxian reply Ophthalmology
1. If the degree of myopia is high, it is normal for the retina to be thinner. 2. Generally, sutures in the sclera do not need to be removed. 3. It is not recommended to replace the intraocular lens, as the haptics of the artificial lens typically adhere to the capsule. Removing ...[Read More] Understanding Blurred Central Vision: Causes and Treatment Options
Understanding Vision Changes with New Glasses: Is Blurriness Normal?
Eyeglasses issues? Hello doctor, I recently got a new pair of glasses with the same prescription as my old ones: -7.00 for the right eye and -6.00 for the left eye, with an additional astigmatism of 25 degrees. I switched to blue-green lenses, and the frame shape changed from a n...
Dr. He Jianxian reply Ophthalmology
Hello Lily: I cannot explain the phenomenon you are experiencing. Logically, with the same prescription, there should not be any different reactions. Director He Jianxian, Ophthalmology Department, Nantou Hospital.[Read More] Understanding Vision Changes with New Glasses: Is Blurriness Normal?
Managing Glaucoma and Hypertension: Potential Medication Conflicts
Issues with Antihypertensive Medications in Patients with Glaucoma Hello, doctor. I would like to ask about my father, who is 71 years old. Recently, he experienced discomfort in his eyes and was diagnosed with glaucoma and moderate cataracts by an ophthalmologist. He is required...
Dr. He Jianxian reply Ophthalmology
Typically, antihypertensive medications do not significantly affect intraocular pressure, and we usually do not check antihypertensive medications before adjusting glaucoma medications. This is for your reference. Director He Jianxian, Department of Ophthalmology, Nantou Hospital...[Read More] Managing Glaucoma and Hypertension: Potential Medication Conflicts
Understanding Sudden Astigmatism Increase and Floaters: When to Seek Further Care
Short-term worsening of astigmatism accompanied by symptoms of floaters? Hello, doctor. In the past, my astigmatism was around 100 degrees, and it didn't affect my daily life. However, over the past year, I've noticed symptoms of astigmatism, such as experiencing glare ...
Dr. He Jianxian reply Ophthalmology
Astigmatism generally does not change significantly unless there has been eye surgery or frequent rubbing of the eyes. If astigmatism continues to increase, it is indeed necessary to investigate the underlying causes. This is for your reference. Dr. Ho Chien-Hsien, Department of ...[Read More] Understanding Sudden Astigmatism Increase and Floaters: When to Seek Further Care
Understanding Vitreous Degeneration: Persistent Flashes and Shadows in Vision
Vitreous degeneration and floaters? Hello, Doctor. I currently see persistent flashes and shadows/dark spots in the center of both eyes. The flashes appear very faint and are easier to notice in a dark room. I have undergone a dilated eye exam, and the doctor said there are no ho...
Dr. He Jianxian reply Ophthalmology
This is indeed a case of floaters. The flashes may persist for a while until the traction on the retina subsides. If there is a sudden significant increase in the frequency of the flashes, it is advisable to undergo a dilated eye examination. Dr. Ho Chien-Hsien, Ophthalmology Dep...[Read More] Understanding Vitreous Degeneration: Persistent Flashes and Shadows in Vision