Understanding Nighttime Visual Afterimages: Causes and Concerns
After blinking at night, the residual image (light spot) is visible? Hello, doctor. Five days ago, I noticed that when I blink in the dark, I see an afterimage as if I were exposed to a bright light. The faster I blink, the brighter the color becomes (a cyan-green hue). During th...
Dr. He Jianxian Reply:
Dear Ms. Anonymous: I have not encountered this situation in clinical practice, so I am unable to provide an answer to your question. If you continue to experience discomfort, I recommend consulting with your attending physician. Sincerely, Dr. Ho Chien-Hsien, Department of Ophth...[Read More] Understanding Nighttime Visual Afterimages: Causes and Concerns
Understanding Visual Afterimages: Causes and Concerns in Low Light
Afterimages (light spots) that can only be seen when blinking in the dark or in low-light conditions? Hello Doctor, about five days ago, I noticed that when I blink in the dark, I see a small square-shaped afterimage as if I were exposed to bright light. The faster I blink, the m...
Dr. He Jianxian Reply:
Hello Ms. Anonymous: I have not encountered this situation in clinical practice, so I am unable to address your question. If you continue to experience discomfort, I recommend consulting with your attending physician. Dr. He Jianxian, Ophthalmology Department, Nantou Hospital.[Read More] Understanding Visual Afterimages: Causes and Concerns in Low Light
Understanding High Eye Pressure and Its Impact on Vision Health
Elevated intraocular pressure, slightly compromised optic nerve, normal visual field examination? Hello, Doctor. I have myopia of -9.00 diopters and astigmatism of -1.50 in my left eye, and myopia of -9.75 diopters and astigmatism of -7.51 in my right eye. I have been wearing gla...
Dr. Liang Ce Reply:
It is recommended that you discuss the above situation with your attending physician to determine if further examinations are necessary. Thank you, and wishing you good health![Read More] Understanding High Eye Pressure and Its Impact on Vision Health
Understanding Flashing Lights in Vision: Causes and Concerns
The eyes may perceive a brief flash of light? Yesterday, the ophthalmological examination, including fundus examination and optic nerve assessment, was normal. I have a history of floaters and panic disorder, which has recently recurred. I have noticed that in brighter lighting c...
Dr. Gao Pilin Reply:
Hello: If there are no issues found during the ophthalmic examination, you can feel reassured. If you are concerned about elevated intraocular pressure, it is necessary to measure it to know for sure. You may also consult a psychiatrist to determine if it is an anxiety issue. The...[Read More] Understanding Flashing Lights in Vision: Causes and Concerns
Understanding Flashing Lights in Dark Rooms: Is It Normal?
Entering a dark room from a bright area? Hello doctor, I recently noticed that when I enter a completely dark room from a bright area, my eyes sometimes experience a sensation of flashes or electrical discharges. However, I just had a fundus examination and optic nerve assessment...
Dr. Gao Pilin Reply:
Hello, Xiao Xiao: It may be due to vitreous traction causing discharge from the retina. If recent examinations showed no issues, you can monitor the situation yourself. However, if the condition worsens, you should seek medical attention for further evaluation. At Taiwan E-Hospit...[Read More] Understanding Flashing Lights in Dark Rooms: Is It Normal?
Understanding Right Eye Pain: Causes and Self-Care Tips
Right eye pain? Hello, doctor. I have the following concerns: 1. My right eye has a prescription of -700 diopters and I experience floaters. For the past four days, I have been experiencing pain in my right eye and orbit, which is more intense when I look towards the 3 o'c...
Dr. He Jianxian Reply:
Dear elderly lady: Based on your description, it is difficult to determine the cause of your pain. Regarding the visual field loss, I recommend that you visit a large hospital for further examination. As for the phenomenon of visual persistence when closing your eyes, it likely d...[Read More] Understanding Right Eye Pain: Causes and Self-Care Tips
Post-Retinal Detachment Surgery: Concerns and Recovery Tips
Post-retinal detachment surgery Hello, since September, I have undergone two surgeries on my left eye and I am very concerned about my vision after healing. Here is my medical history: I have been taking medications to control my blood sugar and hypertension (including BOKEY) for...
Dr. Gao Pilin Reply:
Hello Mr. Zhang: Currently, there is a dark area in your left eye with some imaging, but it is not very clear. The lower third appears slightly brighter with some imaging, but again, it is quite unclear. Overall, it presents as a patchy appearance. May I ask if there is damage to...[Read More] Post-Retinal Detachment Surgery: Concerns and Recovery Tips
Understanding Congenital Optic Nerve Pits and Their Relation to Glaucoma
Eye problems 1. If someone has a congenital larger optic nerve pit, will it also enlarge over time like in glaucoma? 2. When an ophthalmologist flips the upper eyelid to check for foreign bodies, does the process involve touching the conjunctiva, or does it only touch the eyeli...
Dr. Gao Pilin Reply:
Hello, Hao Han: 1. It should not happen. 2. It will only touch the eyelid. If it touches the conjunctiva, it will be very painful. 3. No, it is not. In Taiwan, the ophthalmology department at Puzi Hospital is open: Monday, Tuesday, Thursday, and Friday from 8:00 AM to 12:00 PM, a...[Read More] Understanding Congenital Optic Nerve Pits and Their Relation to Glaucoma
Understanding Common Eye Issues: Floaters, Eye Care, and Exams
Eye problems 1. Can benign floaters disappear on their own? 2. Is it possible for benign floaters to not cause any retinal issues throughout a person's life, or do benign floaters inevitably lead to retinal holes as one ages? Are individuals with physiological benign floater...
Dr. Gao Pilin Reply:
Hello Sun: 1. It may or may not happen, but it usually lasts for a while, and then you get used to it. 2. Benign floaters do not cause retinal disease. Floaters do not lead to retinal tears because tears occur due to vitreous traction or if the retina itself is thinner. 3. Ey...[Read More] Understanding Common Eye Issues: Floaters, Eye Care, and Exams
Understanding Optos 200-Degree Ultra-Widefield Imaging in Eye Care
Optos 200-degree ultra-widefield non-dilated fundus photography? 1. I would like to ask if, during the Optos 200-degree ultra-widefield non-dilated retinal imaging examination, it is possible for the device to come into contact with the cornea. During the procedure, my eyes had t...
Dr. Gao Pilin Reply:
Hello Kuan-Ying, 1. To see a wider field, according to optical principles, one should be closer to the eye. However, under normal circumstances, this should not touch the cornea, so there should be no risk of infection. 2. Traditional dilated fundus examinations and photography ...[Read More] Understanding Optos 200-Degree Ultra-Widefield Imaging in Eye Care
Understanding OCT and Visual Field Tests in Age-Related Eye Health
Glaucoma examination 1. When visiting an ophthalmologist, the doctor mentioned that everyone's optic nerve will inevitably degenerate with age, and that the optic nerve at age 20 will be different from that at age 50. I would like to ask, when I undergo an OCT examination, w...
Dr. Gao Pilin Reply:
Hello, Mr. Tao: 1. Normal values are relative to your age and will change. The physician will interpret them for you to avoid misjudgment. 2. Assessments will be based on your age. 3. I apologize, but I have not encountered that before. 4. The plate is less likely to change. 5. ...[Read More] Understanding OCT and Visual Field Tests in Age-Related Eye Health
Are Dilating Eye Drops Safe for Open-Angle Glaucoma Patients?
Mydriatic eye drops 1. I have open-angle glaucoma with elevated intraocular pressure and floaters. I have used mydriatic eye drops four times in three weeks for examinations. Could this cause harm to my eyes? Specifically, I administered the drops twice within a short interval of...
Dr. Gao Pilin Reply:
Hello James: 1. It should not happen. 2. Closed-angle glaucoma is more likely to trigger acute attacks, while open-angle glaucoma does not. 3. It will not happen. In Taiwan, the ophthalmology department at Puzi Hospital is open on Monday, Tuesday, Thursday, and Friday mornings fr...[Read More] Are Dilating Eye Drops Safe for Open-Angle Glaucoma Patients?
Understanding Glaucoma: Key Questions and Insights for Patients
Glaucoma issues? 1. If a person has over 200 degrees of myopia and astigmatism, will the visual field testing instrument, which corrects refractive errors, adjust for astigmatism in addition to myopia? Does the existing astigmatism affect the visual field test results? 2. Since ...
Dr. Gao Pilin Reply:
Hello, Ah Hou: 1. I have not used this type of visual field instrument, so I am unsure if it can correct astigmatism. However, mild astigmatism may not require correction. 2. Unless the pupil is very small, it generally does not significantly affect the visual field and can be o...[Read More] Understanding Glaucoma: Key Questions and Insights for Patients
Understanding Glaucoma and Eye Care: Key Questions Answered
Glaucoma and Eye Care Issues Dear Dr. Gao, Thank you very much for your kind and prompt responses to my previous inquiries. I am the patient who previously inquired about suspected glaucoma (https://reurl.cc/x0oG3e). I apologize for bothering you again. I have a few questions I ...
Dr. Gao Pilin Reply:
Hello: 1. If the angle is narrow, dilation can sometimes trigger glaucoma; however, if it is open-angle glaucoma, dilation will not cause an issue. 2. It can occur immediately. 3. Symptoms may include sudden blurred vision, photophobia, redness of the eyes, headache/eye pain, acc...[Read More] Understanding Glaucoma and Eye Care: Key Questions Answered
Understanding Brightness Discrepancy in Eyes: Causes and Concerns
There is a difference in brightness between the two eyes? Doctor, my father has recently experienced a difference in brightness between his two eyes over the past two weeks. For example, when looking at a wall, the right eye appears darker than the left. Additionally, he has a se...
Dr. Gao Pilin Reply:
Hello, 1. There are many possible scenarios; I recommend that your father undergo an eye examination. If there are issues with the retina, such as retinal detachment, it needs to be addressed promptly. 2. The problem could be related to the retina, optic nerve, or lens. 3. It...[Read More] Understanding Brightness Discrepancy in Eyes: Causes and Concerns
Understanding Chalazion Surgery: Insights on Eye Health and Treatment
Chalazion surgery Hello Doctor: I have a growth inside my lower eyelid that looks like a bag under my eyes. After being referred to a specialist, it was found that both eyelids have protrusions of varying sizes. The doctor used terminology I didn't quite understand, but it s...
Dr. Gao Pilin Reply:
Hello, regarding the chalazion surgery, it is not an urgent procedure, and you can wait until you return to Taiwan to have it done. As for glaucoma, it is sometimes detected through elevated intraocular pressure measurements or by examining the optic nerve for abnormalities. Ther...[Read More] Understanding Chalazion Surgery: Insights on Eye Health and Treatment
Understanding Glaucoma Risks: High Myopia and Eye Pressure Concerns
Questions related to glaucoma? Hello Doctor: I have high myopia (approximately 800 degrees in both eyes). Yesterday, during a visit to an ophthalmology clinic, it was mentioned that my intraocular pressure was slightly elevated (19 and 21 in both eyes). Therefore, I went to a maj...
Dr. Gao Pilin Reply:
Hello: Glaucoma is a progressive disease, so it is important to compare its changes over time. Therefore, a single examination serves as a baseline for future comparisons. It is the same regardless of how many hospitals you visit; each time is considered a first visit. Currently,...[Read More] Understanding Glaucoma Risks: High Myopia and Eye Pressure Concerns
Understanding High Myopia: Risks, Symptoms, and Eye Care Tips
Various Issues Related to the Eyes Dear Dr. Gao, I previously visited a clinic for a fundus examination due to the appearance of floaters in my eyes. After a thorough examination, the doctor calmly stated that there were no significant issues with my retina, but due to my high m...
Dr. Gao Pilin Reply:
Hello, Mr. Shuangji: 1. Although 800 degrees indicates high myopia, if there is no significant degeneration upon examination and no pathological changes are present, the risk of blindness should be low. As long as you have regular check-ups and maintain healthy eye habits witho...[Read More] Understanding High Myopia: Risks, Symptoms, and Eye Care Tips
Understanding Vision Issues: Insights on Optic Nerve Health and Protection
Eye problems Hello, doctor. I had a follow-up appointment yesterday for a visual field test. The doctor mentioned that there is a dark spot in the center of my right eye, indicating an abnormality with the optic nerve (my right eye has normal vision). In my left eye, there are tw...
Dr. Gao Pilin Reply:
Hello, if there is an issue with the optic nerve, any visual field loss may not be recoverable. However, it is sometimes necessary to monitor the condition over a period of time and conduct visual field tests to check for any changes. If the defects remain in the same areas, the ...[Read More] Understanding Vision Issues: Insights on Optic Nerve Health and Protection
Understanding Glaucoma: Key Questions and Concerns for Patients
Questions about glaucoma? Dear Doctor, My father experienced blurred vision in his left eye about six months ago and initially visited a local clinic. The doctor diagnosed him with cataracts, but stated that it had not progressed to the point of requiring surgery, so my father o...
Dr. Gao Pilin Reply:
Hello Mr. Wang: 1. Visual field (VF) testing is a passive examination. In addition to optic nerve disorders, cataracts can sometimes also affect the results. Optical coherence tomography (OCT) is a subjective method of examination that can reveal the condition of the optic nerve...[Read More] Understanding Glaucoma: Key Questions and Concerns for Patients