Visual field, Ophthalmology FAQ - Page 17

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Understanding Eye Symptoms: Flashes, Floaters, and Vision Concerns

Blinking and shadow issues? Hello Doctor, I am a student who has asked questions before. Recently, my eye condition has not improved and seems to be gradually worsening, which is making me very anxious. I would like to inquire about my situation. Last year, I developed floaters, ...


Dr. Gao Pilin Reply:
Hello, anxious college student: 1. First, it's important to know that if your retina has been examined and found to be normal, there is no need to worry about floaters. Therefore, your concern is unfounded, and you do not need to feel anxious. Occasional floaters are not i...

[Read More] Understanding Eye Symptoms: Flashes, Floaters, and Vision Concerns


Understanding Vitreous Degeneration and Its Impact on Vision

Regarding the vitreous body? Hello, Dr. Gao. I started noticing vitreous degeneration and underwent dilation in May 2016. The doctor at Yadong informed me that it was a normal aging phenomenon due to my high myopia of -600 degrees, which is irreversible. Since then, I have experi...


Dr. Gao Pilin Reply:
Hello, Ah Wei: Vitreous detachment can sometimes happen suddenly, while at other times it may take a long time and may not fully detach. Based on your description, there should be no issues with your follow-up appointment in two weeks.

[Read More] Understanding Vitreous Degeneration and Its Impact on Vision


Eye Injury from a Punch: Understanding Risks and Recovery Steps

The eye was struck by a fist? Hello, doctor. Today at work, I was hit in the left eye with a fist, and immediately there were a lot of blood vessels visible, accompanied by pain. After resting for ten minutes, the blood vessels slowly receded, and moving my eye doesn't hurt,...


Dr. Gao Pilin Reply:
Hello Mr. Hong: If you are experiencing increasingly blurred vision, you should seek medical attention immediately. If the situation does not improve and you are still concerned, you may also consider getting examined at a major hospital. Currently, you should pay attention to an...

[Read More] Eye Injury from a Punch: Understanding Risks and Recovery Steps


Understanding Macular Issues: When to Seek Eye Care

Macular issues I would like to consult a doctor. My eyesight is approximately -4.00 diopters in both eyes, and I have floaters in my right eye but not in my left. Recently, I used an Amsler grid with a white background and black lines to check my vision and noticed that the lower...


Dr. Gao Pilin Reply:
Hello, Kang Kang: This is likely a phenomenon of floaters. Macular degeneration does not resolve with a blink, so it should not be the case. You may continue to observe it yourself.

[Read More] Understanding Macular Issues: When to Seek Eye Care


Understanding Eye Pressure: Glaucoma Concerns and Treatment Options

Suspected glaucoma, issues with intraocular pressure? Hello, doctor. I would like to ask about my condition (I have hyperthyroidism, myopia over 200 and 300 with significant astigmatism, and possibly suspected glaucoma; I have seen an ophthalmologist and my optic nerve is normal,...


Dr. Gao Pilin Reply:
Hello Koko: 1. Intraocular pressure can fluctuate, and measurements may vary each time. There can also be differences between machines. 2. Corneal thickness can affect intraocular pressure, but if it is still high at 26, it may be necessary to consider the optic nerve and visual ...

[Read More] Understanding Eye Pressure: Glaucoma Concerns and Treatment Options


Understanding Eye Floaters and Blinking Issues: What You Need to Know

Subsequent Issues with Floaters and Blinking Problems Hello, Doctor. I apologize for bothering you, but I have a few questions that have been troubling me for a long time, and I am really anxious. I developed floaters around November last year, and it has been very distressing. I...


Dr. Gao Pilin Reply:
Hello, anxious college student: 1. It's a common phenomenon among adolescents, but I'm not sure either. 2. The Amsler grid test assesses the macula but cannot determine retinal thinning. 3. Floaters are not related to bright lights. 4. If you see bright lights when blin...

[Read More] Understanding Eye Floaters and Blinking Issues: What You Need to Know


Understanding Peripheral Blurriness: Causes and Diagnostic Options

Blurred vision in the peripheral field? Hello Dr. Gao, I am the patient who consulted you yesterday regarding the peripheral vision blurriness. I would like to ask you again about what you mentioned yesterday regarding the visual field test results being normal, yet there is some...


Dr. Gao Pilin Reply:
Hello Kevin: Currently, there is no treatment for retinal function degeneration. Intervention is only necessary when symptoms such as retinal tears or detachments occur. If you are still concerned, I recommend visiting a retina specialist for further evaluation and to see if any ...

[Read More] Understanding Peripheral Blurriness: Causes and Diagnostic Options


Can Optic Nerve Atrophy Be Detected Through Eye Exams?

Can optic nerve atrophy be diagnosed through examination? Hello, Dr. Gao. I have high myopia (approximately 900 degrees in both eyes). Recently, I visited the hospital because I noticed that the periphery of my central vision was unusually blurry. The doctor conducted a visual fi...


Dr. Gao Pilin Reply:
Hello Kevin: Your visual field is normal, but there are some areas that are blurred, which may be due to retinal changes. High myopia can easily lead to such degeneration, resulting in unclear images rather than visual field loss; it should not be related to optic nerve atrophy. ...

[Read More] Can Optic Nerve Atrophy Be Detected Through Eye Exams?


Understanding Vitreous Degeneration, Retinal Issues, and Floaters: Your Concerns Addressed

Vitreous degeneration, retinal issues, and floaters? Hello Doctor: Three years ago, I went to the hospital due to the phenomenon of floaters and was diagnosed with a retinal tear, for which I underwent laser treatment. I have had several check-ups since then, and I received addit...


Dr. Gao Pilin Reply:
Hello, Ms. Hsi: 1.2 may indicate vitreous opacities, which are a form of degeneration. These opacities can fluctuate in size over time but do not affect vision. After laser treatment, there may be a loss of visual field in the treated area, which is normal and will not progress...

[Read More] Understanding Vitreous Degeneration, Retinal Issues, and Floaters: Your Concerns Addressed


Understanding Flickering Shadows in Your Right Eye: Causes and Solutions

Flashing black shadows in the corner of the right eye? In the past week, I have been experiencing frequent flickering black spots (or possibly flashes) in the upper right area of my right eye. It resembles the flickering light effect caused by ceiling fans in old buildings. Initi...


Dr. He Jianxian Reply:
Your description resembles photopsia, which is caused by traction on the retina. This phenomenon will disappear once the traction on the retina ceases. If you have already undergone a dilated fundus examination, you can generally feel reassured. However, if you experience an incr...

[Read More] Understanding Flickering Shadows in Your Right Eye: Causes and Solutions


Understanding Eye Flashes: When to Seek Medical Attention

Flashes of light in the eyes? Hello Doctor: Last night I stayed up late and applied some eye drops before bed. After that, when I blinked, I suddenly saw flashes of light, similar to lightning, which occurred a few times and then stopped. The next day, I woke up and did not exper...


Dr. Gao Pilin Reply:
Hello Tracy: If there are no more flashes and your vision and visual field have not changed significantly, you can just observe it yourself. However, if the flashes occur frequently or if there are changes in your vision or visual field, it is advisable to get an examination for ...

[Read More] Understanding Eye Flashes: When to Seek Medical Attention


Understanding MD Values in Visual Field Tests: Do -5 Indicate Vision Loss?

MD value in visual field testing If my visual field test MD value is -5, does that indicate a visual field defect?


Dr. Gao Pilin Reply:
Hello: Please refer to the following information regarding the staging of glaucoma based on visual field examination interpretation: Early stage: MD (Mean Deviation) less than -6 dB (decibels) Mid-stage: MD between -6 and -12 dB (decibels) Late stage: MD greater than -13 dB...

[Read More] Understanding MD Values in Visual Field Tests: Do -5 Indicate Vision Loss?


Understanding Shadows in Your Vision: Could It Be Glaucoma?

Shadow in the inner field of vision? Hello doctor, I previously asked about the issue of my left eye's inner visual field appearing to go dark at the end of 2019 on this platform. At that time, it was suggested that it might be due to floaters. Later, in April 2020, I visite...


Dr. Gao Pilin Reply:
Hello Mr. Huang: This is not a symptom of glaucoma. However, if the entire grid appears black, it is difficult to determine the cause. I recommend that you see an ophthalmologist for an examination. Online answers can only serve as a reference; if necessary, it is important to se...

[Read More] Understanding Shadows in Your Vision: Could It Be Glaucoma?


Understanding Retinal Scans: Do They Replace Traditional Eye Exams?

Questions related to fundus examination? Dear Dr. Gao, I have high myopia (approximately -800 diopters) and therefore undergo regular retinal examinations. In April of this year, an ophthalmologist at a large hospital discovered that both of my eyes had a small area of retinal t...


Dr. Gao Pilin Reply:
Hello, Xiang: The ultra-widefield fundus scanner provides a larger field of view than traditional dilated eye examinations and allows physicians to review the images more thoroughly, making it less likely to overlook lesions. Occasionally, symptoms of flashes may occur, ranging f...

[Read More] Understanding Retinal Scans: Do They Replace Traditional Eye Exams?


Understanding Eye Lightning: Causes and Concerns for Vision Changes

Ocular lightning? Hello Doctor, I currently have a prescription of around -5.00 in both eyes. Earlier this year, I started experiencing a phenomenon where, when I turn my head quickly or blink rapidly, I see dark purple spots or a flash resembling lightning in the central right p...


Dr. Gao Pilin Reply:
Hello: Your condition seems to be related to vitreous traction on the retina causing flashes of light. After examination, there are no issues, so you should feel reassured. However, this situation may persist for an uncertain duration, and you should monitor any changes. If you e...

[Read More] Understanding Eye Lightning: Causes and Concerns for Vision Changes


Understanding Flashing Lights in Vision: Causes and Concerns

Flashes of light in the eyes? Hello, doctor. My vision in both eyes is approximately 500 to 600 degrees, and I have astigmatism as well as slightly elevated intraocular pressure (19 to 20). I started regular follow-ups a month ago, and currently, there are no issues with my optic...


Dr. Gao Pilin Reply:
Hello: If you experience flashes of light, it is still recommended that you visit an ophthalmologist for a dilated eye examination. A general clinic can perform the examination; it is not necessary to go to a large hospital. Online answers can only serve as a reference; if necess...

[Read More] Understanding Flashing Lights in Vision: Causes and Concerns


Understanding Sudden Grayish Ovals in Vision: Possible Causes and Concerns

A sudden appearance of a flat oval-shaped "mosaic/ground glass" grayish-white shadow in the right eye? Hello Doctor: My left eye is hyperopic at +2.25 diopters, and my right eye is myopic at -6.25 diopters. Due to severe astigmatism in my left eye, I have some amblyopia...


Dr. Gao Pilin Reply:
Hello Mr. N: If you notice movement that follows your eye movements but is slightly out of sync and appears shaky, it is likely due to opacities in the vitreous body. These opacities can sometimes be undetectable during examinations and are only perceptible to the individual. Vit...

[Read More] Understanding Sudden Grayish Ovals in Vision: Possible Causes and Concerns


Is Frequent Fundus Examination Harmful for Your Eyes?

Will frequent fundus examinations be harmful to the eyes? Hello, doctor. I have two questions to ask: I have a prescription of -1100 diopters in both eyes, and my left eye has undergone laser treatment for retinal repair twice. Due to my high myopia, I often feel paranoid. Previo...


Dr. Gao Pilin Reply:
Hello Ms. Li: 1. If the frequency of flashes is high or increases, or if there are changes in your visual field, an examination is necessary. 2. This type of examination will not harm your eyes even if the frequency is high, so please rest assured. Online responses can only serve...

[Read More] Is Frequent Fundus Examination Harmful for Your Eyes?


Concerns About Delayed Eye Exam for Possible Pituitary Tumor

Questions about visual field testing? Hello Dr. Gao, I am the patient who inquired yesterday about the blurred vision on the outer side of my left eye. I would like to ask again, as Chang Gung has scheduled my examination for early August. If it is indeed a pituitary tumor, I am ...


Dr. Gao Pilin Reply:
Hello Kevin: The examination may take some time, and every major hospital has a waiting period. If you switch to another hospital, you may need to reschedule the examination. With about 20 days left until early August, it shouldn't be too long. The best choice now is to wait...

[Read More] Concerns About Delayed Eye Exam for Possible Pituitary Tumor


Understanding Blurred Vision in the Outer Field of Left Eye

Blurry vision in the peripheral area of the left eye? Hello Doctor, I am highly myopic (approximately 900 degrees in both eyes). Two years ago, I experienced a sudden vitreous hemorrhage in my left eye, so I have been regularly visiting the hospital for dilated fundus examination...


Dr. Gao Pilin Reply:
Hello Kevin: Blurred vision in the outer fields of both eyes may indicate a defect in the visual field examination. If the retinal examination is normal, we should consider issues related to the optic nerve and the brain. The first thing to consider is a potential problem with th...

[Read More] Understanding Blurred Vision in the Outer Field of Left Eye


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