Understanding Vision Testing for Patients with No Light Perception
Vision examination questions Hello, I am a bit curious if it is possible to detect high hyperopia in an eye that has no light perception through refraction testing. (I previously heard a doctor mention that the eye with no light perception has high hyperopia.) What is the differe...
Dr. Gao Pilin Reply:
Hello, Xin: 1. The absence of light perception in the eyes is not related to the ability to perform a refraction test. Refraction testing measures the eye's refractive power, and as long as the ocular structure is intact, the refractive error can be determined. 2. A slit...[Read More] Understanding Vision Testing for Patients with No Light Perception
Understanding Fundus Examination: Differences Between Slit Lamp and Direct Ophthalmoscope
Fundus examination Hello, doctor. I have a few questions regarding examinations: 1. What is the difference between a slit lamp (with a convex lens) and a standard fundus camera when examining the fundus? 2. Is dilation necessary when using a slit lamp to examine the fundus? Durin...
Dr. Gao Pilin Reply:
Hello Mr. Fang: 1. There is not much difference; the range varies due to the use of different lenses. 2. If the pupil is not too small, both the optic nerve and the macula can be visualized using a slit lamp with lenses, and dilation is not necessarily required.[Read More] Understanding Fundus Examination: Differences Between Slit Lamp and Direct Ophthalmoscope
Understanding Eye Flashes and Floaters: Causes and Treatments
Flashes in the eyes, retinal issues? Dear Dr. Gao, I have myopia in both eyes, approximately 400 degrees. A few months ago, while studying, I often strained my eyes, and about three months ago (in May of this year), I started experiencing floaters. I went to an ophthalmologist f...
Dr. Gao Pilin Reply:
Hello, Ah Yan: 1. It is usually unrelated to fatigue and is a normal physiological degeneration. 2. The eye drops are intended to alleviate discomfort in the eyes and are not related to the prevention of retinal detachment. 3. Most cases do not result in sequelae, and symptoms wi...[Read More] Understanding Eye Flashes and Floaters: Causes and Treatments
Struggling with Glasses: Persistent Dizziness and Eye Issues Explained
There are issues with fitting glasses regardless of how they are adjusted? Hello Doctor: Thank you for taking the time to address my questions. The content may be a bit lengthy, but I want to clearly explain my situation, and I appreciate your help. I have high myopia and floater...
Dr. Liang Ce Reply:
We recommend that you: 1. Since you have already scheduled appointments with the ophthalmology and neurology departments, please undergo further examinations to identify the cause and determine if additional treatment is necessary. 2. You may consider visiting a medical center fo...[Read More] Struggling with Glasses: Persistent Dizziness and Eye Issues Explained
Understanding Floaters vs. Ocular Cysticercosis: Key Insights for Patients
Floaters or ocular toxoplasmosis? I would like to ask the doctor about my condition. After graduating from medical school, I have experienced symptoms of floaters, and I also have high myopia. In late March, I accidentally consumed a few pieces of undercooked pork. At that time, ...
Dr. Gao Pilin Reply:
Hello, it should just be floaters, so please don't worry. However, there is currently no method to improve this condition.[Read More] Understanding Floaters vs. Ocular Cysticercosis: Key Insights for Patients
Understanding Distorted Vision: Possible Causes Beyond Retinal Holes
Suspected retinal tear? The left eye exhibits distortion at a specific angle (peripheral vision), along with flashes of light during eye movement and residual vision. Both eyes have pre-existing myopia and floaters, while the macula appears normal, and the fundus examination show...
Dr. Gao Pilin Reply:
Hello, the presence of flashes indicates that there is vitreous traction on the retina. As for whether there are any tears, a dilated eye examination is necessary to determine that. If the examination shows no issues, it may simply be due to vitreous degeneration causing traction...[Read More] Understanding Distorted Vision: Possible Causes Beyond Retinal Holes
Understanding Black Spots and Vision Issues in Your Right Eye
There are shadows in the right eye and issues with dilation? Last week, I noticed a small shadow in my right eye, but I only see it when looking at a white wall or similar surfaces; otherwise, I don't pay much attention to it. It disappears after a while, but reappears when ...
Dr. Gao Pilin Reply:
Hello Wei: 1. The physician examined the retina and found no issues; the macula is also fine, so it can be monitored. 2. It is likely related to the dilation of the pupils; once the pupils constrict, everything should return to normal.[Read More] Understanding Black Spots and Vision Issues in Your Right Eye
Understanding Nighttime Vision Issues: When Lights Appear Blurry or Flickering
Inquiry Consultation Dear Dr. Gao, Hello. This evening, when I rode my scooter and looked at traffic lights or streetlights, I noticed that they appeared as a cluster of light. The light was not very diffuse, but it seemed to concentrate in one spot, and there was a slight flick...
Dr. Gao Pilin Reply:
Hello, Ah Xiang: 1. It may be caused by myopia or astigmatism. This is normal. 2. No treatment is necessary. Just observe.[Read More] Understanding Nighttime Vision Issues: When Lights Appear Blurry or Flickering
Understanding Eye Floaters and Flashing Lights in High Myopia Patients
The appearance of large areas of floaters that resemble stains or ink splashes in the field of vision? Hello, Doctor Gao. I am a person with high myopia (850, 950). Since mid-June, I have experienced the issues mentioned above. I went for a fundus examination at the clinic on Jun...
Dr. Gao Pilin Reply:
Hello: This may be a case of extensive floaters, which is why you see a large area obscured. This is caused by vitreous degeneration. If the examination shows no issues, you will have to coexist with it peacefully, and over time, it should gradually improve. Currently, the more p...[Read More] Understanding Eye Floaters and Flashing Lights in High Myopia Patients
Seeing Lightning in Closed Eyes: Is It Normal or a Cause for Concern?
Upon waking up with my eyes closed, I see flashes of light? Recently, I have been experiencing floaters, but when I woke up, I noticed a flash of light in my right eye while it was closed. However, I haven't seen it again when my eyes are closed afterward. I usually don'...
Dr. He Jianxian Reply:
It is recommended to observe first. If the phenomenon of flashes continues to recur, a dilated fundus examination is advised. Dr. Ho Chien-Hsien, Ophthalmology Department, Nantou Hospital.[Read More] Seeing Lightning in Closed Eyes: Is It Normal or a Cause for Concern?
Understanding Eye Floaters: Recovery Time and Dietary Tips
Eye floaters Hello Doctor: Recently, I accidentally experienced a flash from a white light bulb at home, and I've been seeing persistent visual floaters in my right eye. Since they haven't disappeared after a day, I went to an ophthalmologist for a dilated fundus examin...
Dr. He Jianxian Reply:
The absorption of hemorrhage can vary depending on the location and the individual. However, based on your description, the bleeding is likely located in the superficial layer of the retina. This type of hemorrhage typically gets absorbed within a few weeks, and there should be n...[Read More] Understanding Eye Floaters: Recovery Time and Dietary Tips
Understanding Congenital Cataracts: Key Considerations and Care
Congenital cataract Recently, during a routine check-up for high myopia (after having undergone laser surgery for myopia), I was suddenly informed that I have congenital cataracts. However, other aspects (fundus examination and optical coherence tomography) showed no issues. The ...
Dr. Gao Pilin Reply:
Hello Lin: Congenital cataracts may be very mild, and if there is no impact on vision, observation is sufficient. If the physician has not mentioned anything specific, treatment may not be necessary; regular check-ups should be adequate.[Read More] Understanding Congenital Cataracts: Key Considerations and Care
Understanding Retinal and Optic Nerve Issues: Key Questions Answered
Retinal and optic nerve issues? Hello, Doctor Gao! Two years ago, I underwent retinal repair, and the doctor also performed a fundus examination using other instruments. Since then, I have been regularly monitoring my retinal condition approximately every six months, but I haven&...
Dr. Gao Pilin Reply:
Hello Jessie: 1. The doctor should have mentioned that the peripheral retina is thinner when looking downward, not the macula. 2. There may be a loss of central vision. If this leads to retinal detachment, vision can deteriorate significantly. 3. Avoid eye strain, prevent worseni...[Read More] Understanding Retinal and Optic Nerve Issues: Key Questions Answered
Understanding Occasional Flashing Afterimages When Using a Computer
Inquiry Consultation Dear Dr. Gao, I apologize for bothering you again. Recently, I have noticed that when I look at my computer screen and then shift my gaze to a nearby white wall, I occasionally see a brief flash or afterimage that resembles a firework lighting up for a momen...
Dr. Gao Pilin Reply:
Hello, Ah-Hsiang: 1. It should be an afterimage. 2. It should be unrelated. 3. It should have no connection.[Read More] Understanding Occasional Flashing Afterimages When Using a Computer
Understanding Flashing Lights and Floaters in Your Vision
The appearance of flashing spots or floaters in the eyes? Dear Dr. Gao, I experienced floaters in April and mid-May and underwent a dilated fundus examination, which diagnosed my retina as intact with no tears, only ordinary floaters. Recently, when I look down and then raise my...
Dr. Gao Pilin Reply:
Hello Mr. Ching: This is likely a substance within the vitreous body. It is also a type of floaters. It should not be related to retinal detachment. You can observe it on your own.[Read More] Understanding Flashing Lights and Floaters in Your Vision
Can Retinal Dilation Exams Detect Macular Degeneration?
Regarding macular degeneration examination? Hello Doctor, I would like to ask if I have undergone a dilated fundus examination of the retina (I have high myopia). Can macular degeneration be detected during the dilated fundus examination? Since I have this examination done once a...
Dr. Gao Pilin Reply:
Hello, the dilated fundus examination can reveal most macular diseases. If there are no symptoms, this examination is sufficient. However, if symptoms are present, the physician may arrange for additional tests, such as fundus fluorescein angiography or optical coherence tomograp...[Read More] Can Retinal Dilation Exams Detect Macular Degeneration?
Understanding Visual Distortions: When Straight Lines Appear Wavy
Follow-up question - The line is not straight? Hello, Dr. Gao. I previously inquired about the following issues: 1. When I focus on a straight line with my right eye, it appears slightly distorted with a mild wave-like sensation. The Amsler grid test seems fine. The images of m...
Dr. Gao Pilin Reply:
Hello Ant: 1. The material of the glasses themselves can also cause image distortion; if the optical properties of the lenses are poor, this can occur. 2. If it is a refractive issue with the eyes, sometimes it cannot be fully corrected with glasses. When glasses are first prescr...[Read More] Understanding Visual Distortions: When Straight Lines Appear Wavy
Understanding Optic Nerve Examination: What You Need to Know
Regarding optic nerve examination? Hello, Doctor. I apologize for the interruption. I would like to ask about the optic nerve examination. I just had a fundus examination, and the doctor determined that the condition of my eyes is normal, with no high intraocular pressure, and bo...
Dr. Gao Pilin Reply:
Hello: Glaucoma is a type of optic nerve disorder, but an examination of the optic nerve does not necessarily mean that glaucoma is being assessed. However, if glaucoma is suspected, some neurological examinations may be conducted.[Read More] Understanding Optic Nerve Examination: What You Need to Know
Understanding High Astigmatism in Preschool Eye Exams: What Parents Need to Know
Pediatric Vision Screening for High Astigmatism Hello Doctor: My child has just turned 3 years old and underwent their first vision examination. The results from the computerized refraction indicated a high astigmatism of 450 degrees in both eyes. After dilation, the measurements...
Dr. Gao Pilin Reply:
Dear Concerned Parents, Hello: Ophthalmologists at large community hospitals, who have undergone complete specialized training, should still be trustworthy. Please follow the physician's instructions and monitor the situation for a period of time. If further examinations ar...[Read More] Understanding High Astigmatism in Preschool Eye Exams: What Parents Need to Know
Sudden Blackout in Vision: Causes and When to Seek Help
A brief moment of blackness in the vision lasting less than a second? Hello Doctor: Since last year, my vision has occasionally flashed black for less than a second, about 0.1 seconds, happening a total of five or six times. I have a history of floaters, and when I went to a clin...
Dr. He Jianxian Reply:
This phenomenon of visual darkness lasting less than 0.1 seconds does not correspond to any known clinical conditions. The precursor symptoms of a stroke that you referred to as "amaurosis fugax" typically last for several seconds, which is caused by a thrombus obstruct...[Read More] Sudden Blackout in Vision: Causes and When to Seek Help