visual disturbance, Ophthalmology FAQ

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Can High Myopia Cause Enlarged Blind Spots and Visual Shadows?

Does high myopia cause an expansion of blind spots? + Visual shadows in dimly lit areas? Hello Doctor, I have a few questions I would like to ask. 1. I noticed in the past year or two that when I close one eye, I can see a dark area near my blind spot in both eyes. Previously, ...


Dr. Gao Pilin Reply:
Hello: 1. High myopia and the expansion of the blind spot associated with high myopia (1000 and 1200 diopters) can indeed lead to retinal degeneration, which may affect the structures surrounding the optic nerve, resulting in an enlarged blind spot. Although your OCT scan shows...

[Read More] Can High Myopia Cause Enlarged Blind Spots and Visual Shadows?


Understanding Visual Disturbances: Allergies, Dry Eyes, and Recovery

Seeing noise in the sky and on walls? Hello, Doctor. I am an engineer, and I have been experiencing significant eye strain over the past few months. About a month ago, I developed eye inflammation, and after seeing a doctor, I was told it was due to allergies. However, I have bee...


Dr. Gao Pilin Reply:
Hello: 1. The reasons for seeing visual noise (visual snow syndrome) in the situations you mentioned may include: - Eye fatigue: Prolonged use of electronic devices can lead to overexertion of the ciliary muscles, resulting in visual disturbances. - Dry eye syndrome: Dr...

[Read More] Understanding Visual Disturbances: Allergies, Dry Eyes, and Recovery


Seeing Fixed Bright Spots When Blinking: Should You Worry?

Fixed bright spots appearing during blinking? Hello doctor, I recently noticed a bright spot at a fixed position when I blink, but it disappears once my eyes are open. Could this be a sign of retinal disease?


Dr. Gao Pilin Reply:
Hello: You mentioned that recently you see a bright spot at a fixed location when you blink, which disappears when your eyes are open. This phenomenon may have several causes. Here are some possible explanations and recommendations: Possible Causes: 1. Vitreous Changes: Changes ...

[Read More] Seeing Fixed Bright Spots When Blinking: Should You Worry?


Seeing Blue Lines After Pupil Dilation: What Does It Mean?

After a dilated eye examination, seeing blue line-like objects in the dark? Hello, Doctor: Today I went for a dilated eye examination at the ophthalmologist due to seeing flashes of light a few times. On my way home, while passing through a dimly lit stairwell, I suddenly noticed...


Dr. Gao Pilin Reply:
Hello: After a dilated eye exam, your eyes may become more sensitive to light because the pupils are enlarged due to the effects of the dilating drops, allowing more light to enter the eye. Additionally, the dilating agent may enhance the responsiveness of the light receptors wit...

[Read More] Seeing Blue Lines After Pupil Dilation: What Does It Mean?


Understanding Persistent Visual Disturbances: Are They Signs of Retinal Degeneration?

Flashing, flickering, lightning—it's hard to describe? In mid-June, I underwent a dilated eye exam, and the doctor explained that there were no symptoms, only the presence of floaters. Since I have not experienced any retinal tears or detachments, the doctor advised that I o...


Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, the persistent phenomenon of "flashes, lightning, flickering, and water patterns," which occurs even when your eyes are closed, is indeed concerning. However, since you underwent a dilated eye examination in mid-June and no ab...

[Read More] Understanding Persistent Visual Disturbances: Are They Signs of Retinal Degeneration?


Understanding Eye Drops: Dosage and Usage for New Medications

The doctor switched medications and forgot how to prescribe the dosage and duration? The follow-up appointment is scheduled for three months later. Initially, I was using artificial tears (Tears Naturale) 1-2 times a day for two months. Now, I have switched to a bottle of artific...


Dr. Gao Pilin Reply:
Hello: 1. Wufu Eye Drops: This is an artificial tear solution used to relieve symptoms of dry eye syndrome. The usage is generally similar to other artificial tears, and you can instill 1-4 times daily, adjusting based on your needs. 2. Methacholine Sulfate and Neostigmine Eye...

[Read More] Understanding Eye Drops: Dosage and Usage for New Medications


Understanding Visual Disturbances After Retinal Laser Treatment

After retinal tear laser treatment, the patient may experience Weiss ring and decreased light perception? Dear Dr. Gao, I had laser treatment for a retinal tear in my left eye last month, and the next day I experienced a Weiss ring along with numerous small black floaters. This ...


Dr. Gao Pilin Reply:
Hello: 1. The effect of Weiss rings on light: Weiss rings are a common phenomenon during vitreous detachment. These dark shadows or ring-like structures typically do not directly affect the amount of light entering the eye, but they may cause visual disturbances, especially aga...

[Read More] Understanding Visual Disturbances After Retinal Laser Treatment


Understanding Rainbow Halo Vision After Waking Up: Causes and Solutions

Seeing rainbow halos upon waking up? Recently, my eyes have been a bit dry, and I've been yawning, blinking, and tearing up. One day, I felt that my tears didn't spread properly, and after squeezing out some tears, I kept blinking until I felt pain. Since that day, when...


Dr. Gao Pilin Reply:
Hello: Your symptoms include seeing rainbow halos upon waking and experiencing dryness and pain in your eyes. This may involve several ocular issues. Here are some possible causes: 1. Dry Eye Syndrome: Dryness can lead to an irregular corneal surface, causing light to scatter a...

[Read More] Understanding Rainbow Halo Vision After Waking Up: Causes and Solutions


Understanding Asymmetrical Symptoms of Low Blood Pressure in Eyes

The symptoms of low blood pressure in both eyes are not quite the same? Sometimes when I suddenly stand up, I see a flash of white light. I know it's related to temporary low blood pressure, but why do I feel that my left eye is more affected while my right eye is less notic...


Dr. Gao Pilin Reply:
Hello: Based on your description, you experience a flash of white light in your vision when you suddenly stand up, and you feel that your left eye is more severely affected than your right eye. Additionally, you have been experiencing some pressure and pain on the left side of yo...

[Read More] Understanding Asymmetrical Symptoms of Low Blood Pressure in Eyes


Understanding Vitreous Degeneration: When to Seek Further Eye Exams

Vitreous degeneration? I would like to ask the doctor, recently due to vitreous degeneration, I have already undergone dilated fundus examination, fundus photography, and OCT at a clinic and the results were all normal. Last night, as I was going to sleep, I felt like there was w...


Dr. Gao Pilin Reply:
Hello: Based on your description, you have recently undergone dilation, fundus photography, and optical coherence tomography (OCT) examinations, all of which yielded normal results. This indicates that there are currently no significant lesions in your eyes. However, you mentione...

[Read More] Understanding Vitreous Degeneration: When to Seek Further Eye Exams


Post-Surgery Concerns: Black Spots in Vision After Retinal Detachment

Two and a half months post-surgery, I see small black spots in my vision? Hello, Doctor. My mother underwent retinal detachment surgery on April 23 of this year, utilizing scleral buckle technique. During her follow-up appointment in May, she received additional laser treatment f...


Dr. Gao Pilin Reply:
Hello: Possible reasons for the appearance of small black spots after surgery: 1. **Floaters**: The appearance of small black spots after retinal detachment surgery may be due to floaters. This occurs because the gel-like substance in the vitreous humor changes with age or post-...

[Read More] Post-Surgery Concerns: Black Spots in Vision After Retinal Detachment


Understanding Visual Disturbances: Is It Visual Snow or Something Else?

Visual persistence? Visual snow syndrome? Mental health issues? Hello Doctor, I currently have high myopia in both eyes, close to 900 degrees. Recently, I started experiencing dizziness, which coincided with a change in my glasses. I went to an ophthalmologist to check my prescri...


Dr. Gao Pilin Reply:
Hello: Based on your description, your visual issues may be related to "visual snow" or "visual persistence." These phenomena can be normal in certain situations, but if you suddenly become aware of them and start to worry, it may exacerbate your discomfort. H...

[Read More] Understanding Visual Disturbances: Is It Visual Snow or Something Else?


Understanding Visual Disturbances: Flickering Lights and Floaters Explained

Upon waking up, I noticed that the wall seemed to be swaying, and there was a slight flickering sensation? Hello Doctor: Recently, I have been troubled by flashes of light. I have undergone multiple dilated eye examinations and ultra-widefield fundus photography, but no issues we...


Dr. Gao Pilin Reply:
Hello: Based on your symptoms, there are several possible explanations to consider: 1. Vitreous Degeneration: You mentioned seeing transparent objects resembling amoebae on sunny days, which is typical of floaters, commonly associated with vitreous degeneration or degeneration....

[Read More] Understanding Visual Disturbances: Flickering Lights and Floaters Explained


Experiencing Brief Blackouts in Vision: Eye or Neurological Issue?

Even though there is no blinking, it visually appears as if the eyes are blinking? Hello, doctor. Since February, I have been experiencing a strange condition. Visually, it feels like I blinked (a very brief moment of darkness lasting a fraction of a second, then immediately retu...


Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described and the results of the various tests conducted, this situation is indeed somewhat complex. Here are several possible considerations: 1. Vitreous Degeneration: This is a common phenomenon, especially as one ages, where the vitreous may u...

[Read More] Experiencing Brief Blackouts in Vision: Eye or Neurological Issue?


Understanding Eye Discomfort: Causes and Solutions for Visual Disturbances

Eye strain? Doctor, excuse me, I have a question. About six months ago, I started experiencing a phenomenon similar to images that appear when a Google search window is refracted. These images change in size with the frequency of my blinking and appear when I look at streetlights...


Dr. Liang Ce Reply:
We recommend you seek medical consultation. Thank you! Wishing you good health!

[Read More] Understanding Eye Discomfort: Causes and Solutions for Visual Disturbances


Are Persistent Flashes or Waves in Vision Harmless?

Persistent flashes or wave-like patterns? Regarding the persistent flashes or wavy patterns mentioned in question 209224, could this condition potentially be completely harmless? Similar to the situation with floaters, could it simply be a result of degeneration? Since the earlie...


Dr. Gao Pilin Reply:
Hello: Possible benign causes: 1. Vitreous degeneration: Similar to floaters, vitreous degeneration can lead to flashes and wavy patterns. This is usually a natural degenerative process that occurs with aging or high myopia and may not require treatment. 2. Vitreous traction: Occ...

[Read More] Are Persistent Flashes or Waves in Vision Harmless?


Understanding Gel-like Visual Disturbances During Eye Movement

Gel-like substance during eye movement? Hello Doctor, I recently noticed that when I turn my head quickly or move my eyes, I see a fixed area in my left eye that resembles a plastic film. This occurs for a fraction of a second each time I turn my head, and it feels like quickly p...


Dr. Gao Pilin Reply:
Hello: Based on your description, you are experiencing brief abnormal visual phenomena in your left eye during rapid eye movements, which may be related to the vitreous or retina. Here are some possible causes: 1. Vitreous opacities: The vitreous is a transparent gel-like substan...

[Read More] Understanding Gel-like Visual Disturbances During Eye Movement


Understanding Diplopia: Is Astigmatism the Cause of Your Visual Disturbances?

Diplopia issue (Sequence 208956) I apologize for the inconvenience, but I would like to ask Dr. Gao if astigmatism issues might only arise when looking at specific objects. I have observed that I can only see a faint line next to a very dark straight line; could this be related t...


Dr. Gao Pilin Reply:
Hello: Astigmatism is a common refractive error that occurs when the curvature of the cornea or lens is uneven, causing light to focus improperly on the retina. It typically affects vision, making objects appear blurry or distorted. This phenomenon is particularly noticeable when...

[Read More] Understanding Diplopia: Is Astigmatism the Cause of Your Visual Disturbances?


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


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