Understanding Visual Field Issues: Common Questions and Answers
Visual field issues 1. If the optic nerve and visual field were normal during the examination in May, and the OCT showed no changes in the optic nerve two days ago, is it still possible to have visual field defects? 2. If one eye is fixed and looking straight ahead, and the visu...
Dr. Gao Pilin Reply:
Hello, Miss Lin: 1. All tests are normal, which indicates that there are currently no visual field defects. 2. Not necessarily; small defects need to be examined to be identified. 3. Blind spots are not usually noticeable on your own; whether peripheral vision has diminished cann...[Read More] Understanding Visual Field Issues: Common Questions and Answers
Understanding Eye Pressure: Concerns and Management for Glaucoma
Intraocular pressure issues? Hello, I apologize for the lengthy message. On July 12, I went to a general clinic for a retinal examination and found my intraocular pressure (IOP) to be 24 and 25 mmHg (after 5 air puffs). The doctor suspected glaucoma. Two weeks later, on July 18, ...
Dr. Gao Pilin Reply:
Hello: 1. It is beneficial to have follow-ups at the same clinic. This allows the physician to monitor your changes effectively. 2. The difference measured by a properly functioning machine should not be significant. You can go to a clinic you trust. 3. If managed properly, it is...[Read More] Understanding Eye Pressure: Concerns and Management for Glaucoma
Understanding Rainbow Vision: Is It a Sign of Glaucoma?
Color vision, visual field examination? Hello, doctor. I have high myopia and astigmatism, with my right eye at -8.50 diopters and -3.00 astigmatism, and my left eye at -6.50 diopters and -3.00 astigmatism. Recently, I have been experiencing halos and rainbow vision when looking ...
Dr. Gao Pilin Reply:
Hello: It may not be glaucoma; it is likely caused by astigmatism. If the physician assesses that a visual field test is necessary, it is covered by health insurance.[Read More] Understanding Rainbow Vision: Is It a Sign of Glaucoma?
Understanding Retinopathy of Prematurity: Impact on Vision and Key Concerns
Retinopathy Hello, thank you for your previous response. I would like to ask if retinopathy of prematurity (ROP) can affect not only peripheral vision but also the central 30 degrees of vision. Is a 30-degree visual field loss of 18.14 dB in one eye considered mild? With retinopa...
Dr. He Jianxian Reply:
Severe retinal disease can indeed lead to a loss of vision within a 30-degree field, and an average value of 18.14 dB is considered moderately severe. If the condition has caused congenital nystagmus and the best-corrected visual acuity is only 0.3 with no light perception, it is...[Read More] Understanding Retinopathy of Prematurity: Impact on Vision and Key Concerns
Understanding Floaters and Vision Loss: What You Need to Know
Floaters, visual field loss? Hello Doctor, I discovered that I had floaters a year ago, and after visiting an ophthalmologist, I was told it was benign. A few months later, I suddenly noticed persistent dark shadows in my upper and lateral vision. The ophthalmologist mentioned th...
Dr. He Jianxian Reply:
If there is a halo around lights, the first suspicion should be whether the glasses are dirty or fogged up if the person is wearing them. If the person is not wearing glasses, then corneal edema should be suspected, and an eye examination is necessary. Dr. He Jianxian, Ophthalmol...[Read More] Understanding Floaters and Vision Loss: What You Need to Know
Understanding Flashing Lights in Vision: When to Seek Eye Care
Flashes of light when closing the eyes? Hello, Doctor. About two weeks ago, I woke up around 3 AM while sleeping. Sometimes, when people are lying in bed with their eyes closed, I suddenly saw a flash of light that was quite large, similar to the feeling of turning on a white scr...
Dr. Gao Pilin Reply:
Hello to those who have trouble sleeping: If you experience certain symptoms, you should return for a follow-up consultation. If it's inconvenient at night, you can come during the day as well. This is likely caused by vitreous traction, which should not be a concern. Howeve...[Read More] Understanding Flashing Lights in Vision: When to Seek Eye Care
Understanding Visual Field Loss: dB Calculation for Bilateral Hemianopia
Bitemporal hemianopsia Hello, doctor: I have experienced a stroke that caused a blockage in my brain, resulting in left homonymous hemianopia (loss of vision in the left visual field in both eyes). When assessing my disability level, the calculation was based on decibel (dB) valu...
Dr. Gao Pilin Reply:
Hello, Mimi: This value cannot be converted; it is measured using a visual field test based on your actual condition. This value will vary depending on the severity of the defect.[Read More] Understanding Visual Field Loss: dB Calculation for Bilateral Hemianopia
Understanding Post-Surgery Vision Changes After Epiretinal Membrane Removal
Proliferative vitreoretinopathy (PVR) Hello, Doctor! I have the following questions to ask, and I would greatly appreciate your assistance! Q1. After undergoing vitrectomy and gas tamponade for a proliferative membrane in the right eye, it has been one and a half months since th...
Dr. Gao Pilin Reply:
Hello Grace: 1. It is difficult to determine the cause; please inform the attending physician and arrange for relevant examinations. 2. It is uncertain whether it is due to the destruction of photoreceptor cells. However, retinal injury can affect vision. 3. It could be residual ...[Read More] Understanding Post-Surgery Vision Changes After Epiretinal Membrane Removal
Understanding Retinopathy of Prematurity: Vision Loss and Eye Movement Issues
Vision problems Hello, I would like to ask some questions. Can retinopathy of prematurity cause a 30-degree visual field loss with -18.14 dB? When the eyes are not turned inward, there seems to be a section on the inner side where I cannot see well; moving objects seem to disappe...
Dr. He Jianxian Reply:
Retinopathy of prematurity (ROP) is a condition caused by the use of high concentrations of oxygen in premature infants, leading to retinal proliferation and traction. Generally, it does not cause nystagmus unless the condition is severe and associated with visual impairment. Nys...[Read More] Understanding Retinopathy of Prematurity: Vision Loss and Eye Movement Issues
Concerns After Retinal Laser Treatment: Risks and Recovery Explained
Post-retinal laser treatment Hello, Doctor. Six years ago, I was advised by a physician to undergo retinal laser treatment for a hole, and I went through with the procedure. However, I later learned that this doctor had a poor reputation and was known to frequently recommend reti...
Dr. He Jianxian Reply:
The laser is typically positioned at the peripheral area of the retina, so the abnormal conditions you mentioned are unlikely to occur. However, if there is scar formation at the site of the laser treatment, it generally does not disappear. Dr. Chien-Hsien Ho, Ophthalmology Depar...[Read More] Concerns After Retinal Laser Treatment: Risks and Recovery Explained
Understanding Visual Field Defects Despite Normal Eye Scans
Visual field examination There are defects in the visual field test, but the optical coherence tomography (OCT) is normal, and the fundus examination is also normal. However, when looking at things in the dark, the vision feels worse than before, and it takes a long time to see c...
Dr. He Jianxian Reply:
Hello Ms. Wu: If the eyeballs are normal but there are defects in the visual field, it is important to consider whether there are issues with the brain. You should consult a neurologist for an examination. Director He Jianxian, Ophthalmology Department, Nantou Hospital.[Read More] Understanding Visual Field Defects Despite Normal Eye Scans
Understanding Eye Floaters and Flashing Lights: When to Seek Help
The appearance of black shadows, spots, or flashes in the eyes? Right eye: 700, left eye: 850. I have been experiencing floaters for a year and a half. I have seen nearly ten doctors at various clinics and hospitals, all of whom have said that my retina is normal and there are no...
Dr. Gao Pilin Reply:
Hello, Ah Rong: This is likely a type of floaters, and currently, there is no effective treatment. You will just have to gradually accept it. Perhaps it will improve over time; just hang in there a little longer.[Read More] Understanding Eye Floaters and Flashing Lights: When to Seek Help
Understanding Bilateral Ischemic Optic Neuropathy: Key Insights for Patients
Questions regarding bilateral ischemic optic neuropathy? Hello, doctor. I had an eye examination at the hospital due to high intraocular pressure, suspecting glaucoma. I noticed some information on the diagnosis report, but the doctor only mentioned the data without elaborating a...
Dr. Gao Pilin Reply:
Hello: Regarding the above, there is only slightly elevated intraocular pressure, and there may be some minor changes in the macula, but everything else appears to be normal. Therefore, as the physician mentioned, it should be fine, and there is no need to be anxious. Macular deg...[Read More] Understanding Bilateral Ischemic Optic Neuropathy: Key Insights for Patients
Understanding Macular Degeneration: Symptoms, Risks, and Next Steps
Fundus examination Hello, today I went to the clinic for a fundus examination because I experience a floating and vibrating sensation when looking at certain objects (such as black and white patterns or certain curtain designs). I do not have any issues reading in my normal daily...
Dr. Gao Pilin Reply:
Hello: The black spots you see are likely due to floaters, which are a degeneration of the vitreous body and are unrelated to the macula. If there is macular degeneration, it may gradually progress, but the timeline can be quite long, and there may not be immediate changes. There...[Read More] Understanding Macular Degeneration: Symptoms, Risks, and Next Steps
Understanding Floaters and Flickering Lights: Common Eye Concerns Explained
Floaters accompanied by a slight flickering sensation in the visual field? Hello Dr. Gao: I have been experiencing floaters since middle school, and during the summer, I often use electronic devices. Recently, I feel that the floaters have increased, and when I look at a white wa...
Dr. Gao Pilin Reply:
Hello, Chang: 1. When the vitreous body degenerates, it can pull on the retina, leading to this phenomenon. 2. It is difficult to quantify; in your case, the floaters are positioned right in the center of your visual field, which is why they feel obstructive. Even a single floate...[Read More] Understanding Floaters and Flickering Lights: Common Eye Concerns Explained
Understanding Lightning Symptoms in Eyes: Glaucoma and Retinal Concerns
The occurrence of lightning-like symptoms in the eyes is related to issues concerning glaucoma? Hello, doctor. I would like to ask you a few questions. (1) While riding my bike to work and walking up the stairs to my office, I noticed a phenomenon where there were bright, light...
Dr. He Jianxian Reply:
Hello: 1. Your astigmatism seems to take about ten minutes to resolve, which is not typical of a retinal issue; flashes caused by retinal traction are usually momentary. I'm not quite sure what your symptoms are. 2. Glaucoma has a hereditary tendency, but it is difficult to ...[Read More] Understanding Lightning Symptoms in Eyes: Glaucoma and Retinal Concerns
Glaucoma Medications During Pregnancy: Safety and Alternatives
Medications for glaucoma during pregnancy? During pregnancy, is it safe to use glaucoma medications? If so, which ones can be used? Initially, I was using Alphagan (brimonidine), but I later discovered that it exacerbated my pre-existing dry mouth condition, ultimately leading to...
Dr. Liang Ce Reply:
We recommend that you: 1. Discuss the above situation further with your attending physician to determine if any additional tests are necessary. 2. You may also consider seeking care at a major hospital or medical center. Thank you, and wishing you good health![Read More] Glaucoma Medications During Pregnancy: Safety and Alternatives
Understanding Eye Pressure: Should You Worry About Glaucoma?
Intraocular pressure issues? I recently had a health check-up, and my left eye intraocular pressure was measured at 17 mmHg and my right eye at 21 mmHg (using a non-contact tonometer). I mentioned that I wanted to redo the test because the puff test makes me want to close my eyes...
Dr. Gao Pilin Reply:
Hello Mr. Liu: There is no need to be overly fixated on the numbers 20 and 21; these are merely indicators representing the threshold close to the average normal intraocular pressure. This serves as a warning sign that there is a possibility of developing glaucoma. However, it is...[Read More] Understanding Eye Pressure: Should You Worry About Glaucoma?
Understanding Eye Discomfort: Symptoms, Causes, and Next Steps
Inquiry about eye discomfort? Hello Doctor: Two months ago, after experiencing severe headaches, I began to feel eye fatigue and blurred vision. I have already consulted a neurologist and about six ophthalmologists. The headaches have ceased, and examinations showed no abnormalit...
Dr. Gao Pilin Reply:
Hello Mr. Liao: 1. Since floaters are harmless and there is no active treatment available, the current examination should be sufficient. 2. It is possible that your prescription is too strong, which may cause fatigue and difficulty focusing. You might consider trying multifoca...[Read More] Understanding Eye Discomfort: Symptoms, Causes, and Next Steps
Managing Glaucoma Medications During Pregnancy: Safety and Alternatives
Medications for glaucoma during pregnancy? During pregnancy, is it safe to use glaucoma medications? If so, which ones can be used? Initially, I was using Alphagan (brimonidine), but I later found that it exacerbated my pre-existing dry mouth condition, ultimately leading to seve...
Dr. Liang Ce Reply:
I recommend that you: 1. Discuss the above situation further with your attending physician to determine if any additional tests are necessary. 2. You may also consider visiting a major hospital or medical center for evaluation. Thank you, and wish you good health![Read More] Managing Glaucoma Medications During Pregnancy: Safety and Alternatives