Visual field, Ophthalmology FAQ - Page 2

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Understanding Diplopia and Astigmatism: Causes and Concerns

Diplopic astigmatism I would like to consult Dr. Gao regarding my astigmatism, which was previously measured at 0.50 and did not seem to cause any significant issues. Recently, I have been experiencing double vision. I previously mentioned that there is a faint line next to the b...


Dr. Gao Pilin Reply:
Hello: Regarding your situation, I understand your concerns. Based on your description, your main issues currently are double vision and changes in astigmatism. First, the degree of astigmatism can change over time, especially during periods of eye strain or visual adjustment. An...

[Read More] Understanding Diplopia and Astigmatism: Causes and Concerns


Understanding Retinal Detachment: Symptoms and Early Warning Signs

Retinal detachment Doctor, I would like to ask a few questions: Is it necessary to see shadows before retinal detachment occurs? What are the warning signs that may indicate retinal detachment? Also, what are the warning signs of glaucoma? Thank you, doctor; I really want to know...


Dr. Gao Pilin Reply:
Hello: Symptoms and Warning Signs of Retinal Detachment Retinal detachment is a serious ophthalmic emergency that requires prompt treatment. When the retina detaches from its underlying tissue, it can lead to vision loss. Here are common warning signs and symptoms: 1. Flashes...

[Read More] Understanding Retinal Detachment: Symptoms and Early Warning Signs


When to Seek Medical Attention for Frequent Eye Flashes

When to seek medical attention for flashes of light in the eyes? Hello Doctor: Thank you very much for your detailed response regarding the issue of experiencing flashes in the eyes. I learned a lot from your explanation. However, I still have a question that I hope you can clari...


Dr. Gao Pilin Reply:
Hello, thank you for your question. It's not unusual, and it's quite important. The phenomenon of flashes of light, especially in the absence of an obvious external light source, may be a warning sign of certain issues within the eye and should be taken seriously. The t...

[Read More] When to Seek Medical Attention for Frequent Eye Flashes


Understanding Flashing Lights in Vision: When to Seek Eye Care

Flashes of light in the eyes that resemble a broken light bulb? Hello Doctor: I do not have myopia. Since February, I have occasionally experienced a sensation of a light bulb flickering at the top of my head, with each occurrence lasting briefly. Sometimes it happens five or six...


Dr. Gao Pilin Reply:
Hello: The situation you described is likely related to photopsia. Photopsia is typically caused by traction or stimulation of the retina, and it is more common in individuals with thinner retinas. Here are detailed answers to the issues you mentioned: 1. Should you seek medica...

[Read More] Understanding Flashing Lights in Vision: When to Seek Eye Care


Understanding Eye Issues: Green Lights, Floaters, and Visual Distortions

Eye problems Hello, doctor. I have some questions I would like to ask. Sometimes when I move my eyes (not very quickly), I see a "green" light (a patch). As a student, I spend quite a long time using my eyes, so I feel that my floaters have become more pronounced. Is th...


Dr. Gao Pilin Reply:
Hello: 1. Seeing "green" light when moving your eyes: The situation you described may be related to vitreous traction on the retina, which can trigger photopsia, such as flashes of light or seeing green spots during eye movement. If this phenomenon occurs frequently o...

[Read More] Understanding Eye Issues: Green Lights, Floaters, and Visual Distortions


Understanding Floaters and Flashing Lights: When to Seek Eye Care

Eye highlights Hello Doctor: I started experiencing symptoms of floaters around January of this year. Since then, I have undergone 10 dilated eye examinations because new symptoms keep appearing, which makes me anxious and leads me to visit different clinics (I have had two visit...


Dr. Gao Pilin Reply:
Hello: 1. Examination Results and Laser Treatment: If multiple dilated eye examinations have not revealed any retinal tears or holes, despite having high myopia and thinner peripheral retina, there is a valid reason why your doctor has not recommended laser treatment. Preventiv...

[Read More] Understanding Floaters and Flashing Lights: When to Seek Eye Care


Understanding Post-Retinal Detachment Surgery Symptoms and Concerns

Post-Retinal Detachment Surgery Hello Director: I have undergone retinal detachment surgery on my left eye, which involved gas injection and vitrectomy. I also had an artificial lens implanted three years ago, and my vision is approximately 0.8 to 0.9. However, for the past three...


Dr. He Jianxian Reply:
Dear Mr. Hope: Based on your description, there should generally be no issues with your retina. As for the sensation of movement you are experiencing, I cannot interpret that; I recommend discussing it with your attending physician. Director He Jianxian, Ophthalmology, Nantou Hos...

[Read More] Understanding Post-Retinal Detachment Surgery Symptoms and Concerns


Understanding Eye Issues: Floaters, Flashes, and Dry Eyes Explained

Flashes, eye problems? Hello Doctor, thank you for answering some of my questions previously. I really appreciate it. I have floaters and wear orthokeratology lenses. I have some additional questions I would like to ask: 1. Recently, when I stare at a screen for a long time, I ...


Dr. Gao Pilin Reply:
Hello: 1. Seeing a flash of light when staring at a screen: This situation may be related to eye fatigue or visual overstimulation. When you focus on a screen for an extended period, the photoreceptors in the retina may produce brief visual afterimages, which is a normal phenom...

[Read More] Understanding Eye Issues: Floaters, Flashes, and Dry Eyes Explained


Why Do I See a Black Circle in Bright Lights? Eye Health Explained

A black circular object appears at the center of the light source? Recently, I have noticed that when I look at light sources (such as light bulbs, headlights of cars at night, and streetlights) with my left eye, a small black circular object occasionally appears at the center of...


Dr. Gao Pilin Reply:
Hello: Based on your description, the appearance of a black circular object in your left eye when looking at a light source may be caused by various factors, and further examination is needed to determine the specific cause. Here are several possible reasons: 1. Vitreous opacit...

[Read More] Why Do I See a Black Circle in Bright Lights? Eye Health Explained


Common Eye Issues: Managing High Eye Pressure and Visual Disturbances

Eye problems Hello, Doctor. I have a few questions: 1. My intraocular pressure seems to be a bit high; do you have any methods to help lower it? 2. I wear orthokeratology lenses at night, but when I blink quickly in the dark, I see a circular light in the center of my vision. 3. ...


Dr. Gao Pilin Reply:
Hello: 1. Management of elevated intraocular pressure: - Pharmacological treatment: If intraocular pressure is elevated, topical medications to lower eye pressure are typically used. The specific medication should be based on the ophthalmologist's prescription. - L...

[Read More] Common Eye Issues: Managing High Eye Pressure and Visual Disturbances


Understanding White Light Spots in Vision: Causes and Concerns

White streaks or spots of light appearing in the vision? Hello, doctor. I have high myopia (1000-1050) and astigmatism of 150 degrees. Recently, I noticed the presence of floaters, but they haven't significantly affected my daily life. However, I have experienced symptoms re...


Dr. Gao Pilin Reply:
Hello: Based on your description, the visual phenomena you mentioned involve floaters, flashes, and possibly visual snow. Firstly, floaters are typically caused by opacities in the vitreous humor projecting onto the retina; these floating objects can be transparent or semi-transp...

[Read More] Understanding White Light Spots in Vision: Causes and Concerns


Understanding Zigzag Light Patterns in Vision: Causes and Insights

Sawtooth light? Hello, Doctor Gao. I have noticed a curved, serrated bright line on the right side of my vision. I use the term "bright line" because it does not flicker. When I close my eyes and rest, the symptoms disappear within ten minutes, and I do not experience a...


Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, the appearance of arc-shaped, serrated bright lines in your right visual field may be related to issues with the eyes or the nervous system. Here are some possible factors and recommendations: Possible Factors: 1. Eye Problems: Abnorma...

[Read More] Understanding Zigzag Light Patterns in Vision: Causes and Insights


Understanding Blurry Vision with Soft Contact Lenses: A Guide for High Myopia

One eye is blurry with soft contact lenses? Hello Doctor: I have high myopia (the most recent measurement was two weeks ago: left eye approximately -1200 diopters with astigmatism of -175; right eye approximately -1075 diopters with astigmatism of -175). However, each time I have...


Dr. Gao Pilin Reply:
Hello: Based on the situation you described, there are several possible reasons that could explain your vision fluctuations: 1. Inconsistent prescription between glasses and contact lenses: You mentioned that the prescriptions for your glasses and contact lenses differ, which ma...

[Read More] Understanding Blurry Vision with Soft Contact Lenses: A Guide for High Myopia


Understanding Eye Flashes: Signs of Retinal Detachment or Not?

Flashes of light in the eyes? Hello, Doctor Gao. I do not have floaters, but I am nearsighted with a prescription of -1.50 in my left eye and -2.20 in my right eye. Recently, I have occasionally seen flashes of light, such as two quick flashes while in the bathroom (I'm not ...


Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, there are several possibilities to consider, but it does not necessarily indicate retinal detachment. 1. Occasional flashes of light: This condition may be related to the retina. If the retina is being pulled or has small tears, it ca...

[Read More] Understanding Eye Flashes: Signs of Retinal Detachment or Not?


Understanding Eye Flashes and Vitreous Liquefaction in High Myopia

Eye flashes; vitreous liquefaction? Hello, Doctor: A few days ago, I came to ask you about the sensation of flashing lights in my eyes. I have high myopia of over 1000 degrees, and I started noticing floaters around January, which led me to frequently visit ophthalmology clinics ...


Dr. Gao Pilin Reply:
Hello: Based on your description, you are indeed facing some challenges related to retinal issues, but in your case, these symptoms are typically classified as part of retinal degeneration. Retinal degeneration is a broader term used to describe changes or deterioration in the fu...

[Read More] Understanding Eye Flashes and Vitreous Liquefaction in High Myopia


Glaucoma or Night Blindness: Understanding Your Eye Condition

Is it glaucoma or night blindness? Hello doctor, I was diagnosed with macular degeneration during my health check-up in January this year. Subsequent follow-up examinations revealed that I have low-tension glaucoma (my eye pressure was approximately 10-15 before using eye drops)....


Dr. He Jianxian Reply:
Dear Confused Individual: Due to the complexity of your condition, it is difficult to provide a recommendation. I suggest you go directly to a medical center for an examination, as you may receive a more accurate diagnosis. Dr. He Jianxian, Department of Ophthalmology, Nantou Hos...

[Read More] Glaucoma or Night Blindness: Understanding Your Eye Condition


Understanding Vision Issues: Thin Optic Nerve and Shadow Symptoms

Regarding visual field issues? Hello doctor, about three months ago, I was diagnosed with thinning of the optic nerve in the upper part of both eyes. The doctor mentioned that the thickness is approximately 79, while the lower part is normal at 100. The night before last, while m...


Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, the fact that the shadow changes position with the movement of your face suggests that it is less likely to be related to an optic nerve issue. However, an examination is still necessary to clarify the problem. Here are several steps yo...

[Read More] Understanding Vision Issues: Thin Optic Nerve and Shadow Symptoms


Understanding Visual Flicker and Vibration Sensations in Myopia

Visual flickering, vibration sensation? Hello Doctor: I have high myopia and a few months ago I discovered floaters, and recently I've been experiencing flashes. I have visited clinics multiple times, but no issues were found; they suggested it might be a process of posterio...


Dr. Gao Pilin Reply:
Hello: Here are the possible reasons: 1. Posterior Vitreous Detachment: Your doctor mentioned that you may be experiencing posterior vitreous detachment. This can lead to symptoms such as floaters and occasional flashes of light. 2. Visual Disturbance: This sensation is not commo...

[Read More] Understanding Visual Flicker and Vibration Sensations in Myopia


Understanding Retinitis Pigmentosa: Symptoms, Diagnosis, and Vision Changes

Retinitis Pigmentosa Hello Doctor: During my eye examination last year, I was diagnosed with a condition that has resulted in significant floaters and photophobia during the day, as well as persistent flashing at night. I also found out that my night vision is not very good. Sinc...


Dr. Gao Pilin Reply:
Hello: The situation you described indicates that you have been diagnosed with retinitis pigmentosa, and you are experiencing symptoms such as floaters, photophobia, flashes, and night blindness. Your visual field examination results show changes in the peripheral vision, which i...

[Read More] Understanding Retinitis Pigmentosa: Symptoms, Diagnosis, and Vision Changes


Understanding Persistent Eye Flickering: Causes and Concerns

Eye blinking Hello, Doctor Gao. I am the person who inquired about #208076. I apologize for asking a few more questions. I have been reading more and found that most people experience spotty flashes when moving their eyes or only in one eye. However, in my case, whether my eyes a...


Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, including persistent flickering sensations and a flickering frequency synchronized with your heartbeat, this may be related to vitreous traction on the retina. Since no issues were found during yesterday's examination but the sympt...

[Read More] Understanding Persistent Eye Flickering: Causes and Concerns


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