Impact of Eye Conditions on Visual Field Testing Accuracy
Visual field examination Hello, Doctor: I would like to ask if during a visual field test, if one eye is covered and the covered eye can still perceive some light from the instruments through a tissue, will this affect the accuracy of the test? For the next test, would it be bett...
Dr. Gao Pilin Reply:
Hello Ms. P: Having tissue paper in place should not affect the results of the examination, as the visual field test is conducted for only one eye at a time. High myopia can inherently cause some changes in the optic nerve head, which can sometimes be difficult to differentiate f...[Read More] Impact of Eye Conditions on Visual Field Testing Accuracy
Is Self-Testing Eye Pressure Reliable? Understanding Your Eye Health Concerns
Is the finger prick method accurate? Hello, I often feel pain and pressure in my left eye, along with headaches, so I saw two ophthalmologists last month. The first doctor measured my eye pressure using a puff test, which showed (left) 30 and (right) 28. However, the doctor said ...
Dr. Cai Wenyuan Reply:
Is the finger measurement method accurate? Please do not attempt it.[Read More] Is Self-Testing Eye Pressure Reliable? Understanding Your Eye Health Concerns
Understanding Eye Pressure, Glaucoma Concerns, and Self-Assessment Methods
Regarding intraocular pressure, glaucoma, and the method of palpation? Hello, I often feel pain and pressure in my left eye, along with headaches, so I saw two ophthalmologists last month. The first doctor measured my intraocular pressure using a puff test, which showed (left) 30...
Dr. Gao Pilin Reply:
Hello Isa: Your condition is likely due to eye strain from excessive use, causing a sensation of pressure and pain in your eyes. It is not glaucoma. Ciliary muscle tension can also lead to this feeling of pressure. Even experienced physicians cannot accurately assess intraocular ...[Read More] Understanding Eye Pressure, Glaucoma Concerns, and Self-Assessment Methods
Understanding Cataract Surgery: Common Concerns and Artificial Lens Choices
Could you please provide more specific questions regarding cataract surgery and intraocular lenses? Dear Doctor, A few days ago, my father underwent cataract surgery. He had been delaying the surgery for nearly ten years and decided to opt for a better quality intraocular lens (...
Dr. He Jianxian Reply:
Hello Mr. Bruce: Essentially, cataract surgery cannot be described as a "very quick and simple" procedure. The actual surgical process may take around ten to twenty minutes, but there are many preparatory steps involved, making the entire process take about 40 minutes t...[Read More] Understanding Cataract Surgery: Common Concerns and Artificial Lens Choices
Understanding Eye Pressure: Expert Answers to Common Concerns
Follow-up inquiry #155163 regarding intraocular pressure issues? Dear Dr. Gao, Thank you very much for your detailed response to my inquiry regarding the intraocular pressure issue in "<a href='https://adoctor.tw/article/155163'>#155163 Eye Pressure Consulta...
Dr. Gao Pilin Reply:
Hello, Dr. Gao: 1. Regarding the eye drop "EYEHELP EYE DROPS 0.01% (containing neostigmine methylsulfate 0.1mg)," thank you for providing the medication information leaflet. I have understood its effects and side effects. May I ask if this eye drop contains "stero...[Read More] Understanding Eye Pressure: Expert Answers to Common Concerns
Understanding Retinal Tears: Concerns, Symptoms, and Treatment Options
Follow-up on retinal traction issues? Hello Dr. Gao, I am the questioner Tong from #155019. I have a few more questions regarding retinal traction that I would like to ask you. Thank you. Regarding the previous questions: 1. Will retinal traction become more severe over time?...
Dr. Gao Pilin Reply:
Hello, 1. The pulling sensation is still present and slightly more than last time. This pulling is a normal phenomenon of vitreous degeneration and does not necessarily lead to retinal detachment; sometimes it is just a transitional phase. 5. Does vitreous degeneration always...[Read More] Understanding Retinal Tears: Concerns, Symptoms, and Treatment Options
Understanding Selective Laser Trabeculoplasty for Open-Angle Glaucoma
Issues Related to Laser Treatment for Open-Angle Glaucoma Hello, Doctor: May I ask if the current treatment for open-angle glaucoma in the country primarily uses selective laser trabeculoplasty (SLT), or are there hospitals that still utilize argon laser trabeculoplasty (ALT)? Is...
Dr. He Jianxian Reply:
Dear Mr. Dongdong: As I am not engaged in laser trabeculoplasty and have not had practical experience with patients undergoing this type of treatment during my learning process, I am unable to provide appropriate advice regarding this therapy. Dr. He Jianxian, Nantou Hospital[Read More] Understanding Selective Laser Trabeculoplasty for Open-Angle Glaucoma
Understanding Dilating Eye Drops for Fundus Examination Safety
Fundus examination and mydriatic agents? Dear Dr. Gao, Thank you very much for your responses to my previous inquiries. Recently, I have noticed a slight increase in my eye floaters, and you mentioned that this is likely a normal degenerative phenomenon, which I completely agree...
Dr. Gao Pilin Reply:
Hello, Ah-Hsiang: The risk of developing complications from the use of mydriatic agents during a fundus examination is very low. Complications may only arise if there is a pre-existing tendency for glaucoma. The presence of floaters will not be affected by this procedure. If ther...[Read More] Understanding Dilating Eye Drops for Fundus Examination Safety
Understanding Corneal Degeneration: Causes, Symptoms, and Progression
Corneal degeneration Hello Doctor: Recently, my physician diagnosed me with corneal degeneration, but did not provide much explanation, and I am unsure what this condition entails. Currently, I do not feel any discomfort in my eyes, and the doctor only performed a routine examina...
Dr. Gao Pilin Reply:
Hello Ken: Corneal degeneration is a form of corneal dystrophy. There are many symptoms and manifestations, and your specific situation should be discussed with the examining physician for a proper understanding. The cornea is the transparent outermost layer of the eye. Light mus...[Read More] Understanding Corneal Degeneration: Causes, Symptoms, and Progression
Steroid-Induced Eye Pressure Increase: Risks and Recovery Time
Steroids can cause an increase in intraocular pressure? Hello: A high school student developed increased intraocular pressure due to the use of steroid eye drops for conjunctival keratitis. The medication has now been discontinued, and they are using 0.5% pressure-lowering eye dr...
Dr. Gao Pilin Reply:
Hello, Mrs. Chen: Elevated intraocular pressure caused by steroids can return to normal if detected early and the medication is discontinued promptly. It rarely causes permanent damage, so please do not worry too much. However, it is still important to regularly monitor your intr...[Read More] Steroid-Induced Eye Pressure Increase: Risks and Recovery Time
Understanding Glaucoma: OCT Insights, Diagnosis, and Treatment Advances
Glaucoma-related 1. Can OCT directly show optic nerve atrophy, or does it only indicate the size of the optic disc? Does high myopia affect the interpretation? 2. If the OCT values are abnormal but the visual field test is normal, can it still be classified as glaucoma? (The pa...
Dr. He Jianxian Reply:
Hello Ms. Ching: 1. OCT (Optical Coherence Tomography) is used to collect population data to establish a database for comparative analysis. However, due to individual variations, there can be significant differences, especially in cases of high myopia where the optic nerve head...[Read More] Understanding Glaucoma: OCT Insights, Diagnosis, and Treatment Advances
Understanding Yellow Shadows in Vision: Causes and Concerns
The appearance of yellowish-blue shadows in the eyes, especially noticeable when closing them? Hello, doctor. I have high myopia and floaters. Recently, I noticed that the color temperature in my eyes is different; my left eye feels darker and has a warmer color tone. When I clos...
Dr. Gao Pilin Reply:
Hello Mr. Hsu: Seeing different colors of light and shadows with your eyes closed is usually a reaction caused by the ongoing activity of nerve cells, and in some cases, it can be a normal visual phenomenon. This is generally considered a harmless response. These symptoms are not...[Read More] Understanding Yellow Shadows in Vision: Causes and Concerns
Seeing Rainbow Halos Around Streetlights: Possible Causes Explained
Seeing a rainbow halo around a streetlight? Last week, I had a visual field test and a fundus examination, both of which were normal. A few days ago, I noticed rainbow halos around streetlights, so I immediately visited an ophthalmologist. My intraocular pressure was normal, and ...
Dr. He Jianxian Reply:
Hello Vivi: First, it is important to understand that glaucoma is not possible, as only acute glaucoma can cause such a condition. If you are wearing glasses, dirty lenses or impurities in your tears could also lead to similar issues. Dr. He Jianxian, Ophthalmologist, Nantou Hosp...[Read More] Seeing Rainbow Halos Around Streetlights: Possible Causes Explained
Understanding Selective Laser Trabeculoplasty for Open-Angle Glaucoma
Questions related to laser treatment for open-angle glaucoma? Hello, Doctor: May I ask if the current treatment for open-angle glaucoma in Taiwan primarily uses Selective Laser Trabeculoplasty (SLT)? Does National Taiwan University Hospital have this equipment? Are there hospital...
Dr. Cai Wenyuan Reply:
I'm sorry, but it would be best to discuss your question with your attending physician.[Read More] Understanding Selective Laser Trabeculoplasty for Open-Angle Glaucoma
Understanding Fixed Black Spots in Vision: Is It Floaters or Something Else?
Fixed black spots that disappear when blinking? Both eyes have high myopia, around 1000 degrees. I have had floaters since high school, and recently I noticed that sometimes my right eye sees a small black dot that is stationary and appears for about two to three seconds. It disa...
Dr. He Jianxian Reply:
Floaters typically move, but the spots you described are fixed, making it difficult to confirm whether they are floaters. I recommend undergoing a comprehensive dilated eye exam to check the retina for any abnormalities. If the retina is normal, there is no need for concern.[Read More] Understanding Fixed Black Spots in Vision: Is It Floaters or Something Else?
Understanding Glaucoma: Lifelong Treatment and Prognosis Insights
Eye problems 1. I would like to ask if being diagnosed with glaucoma means that I will need to use eye drops for the rest of my life? 2. Is the prognosis for mild glaucoma good?
Dr. He Jianxian Reply:
1. Most people will indeed be on medication for a lifetime. 2. The prognosis for most cases of glaucoma is generally good.[Read More] Understanding Glaucoma: Lifelong Treatment and Prognosis Insights
Can Early Detection of Glaucoma Prevent Vision Loss for Life?
Eye-related I would like to inquire if early detection of glaucoma can allow for lifelong control, meaning that vision loss can be prevented.
Dr. He Jianxian Reply:
In an ideal situation, with the help of medication or surgery to control intraocular pressure, the optic nerve theoretically should not undergo degeneration. However, in clinical practice, there are indeed patients whose intraocular pressure is well-controlled, yet their conditio...[Read More] Can Early Detection of Glaucoma Prevent Vision Loss for Life?
Understanding Glaucoma: Symptoms, Diagnosis, and Eye Health Concerns
About glaucoma? I found some information about glaucoma online and became worried that I might have it. Previously, I noticed rainbow halos around lights at night. After visiting an ophthalmologist, my intraocular pressure was measured and found to be within the normal range. The...
Dr. He Jianxian Reply:
1. An indirect ophthalmoscope can visualize the retina and the optic nerve. 2. The description of glaucoma you mentioned refers to the halo phenomenon seen in acute angle-closure glaucoma with corneal edema. With your -6.00 diopter myopia, it is highly unlikely for you to exper...[Read More] Understanding Glaucoma: Symptoms, Diagnosis, and Eye Health Concerns
Understanding Floaters: Causes, Symptoms, and Management Tips
Floaters-related conditions Hello, Doctor: Since early February, I've been experiencing discomfort in my eyes. My right eye has difficulty seeing distant objects clearly, but an eye exam showed no issues, and it was thought to be due to eye strain. One day, I gently pressed ...
Dr. Gao Pilin Reply:
Hello, Bozai: 1. Is it possible that lightly pressing on the eyelid or eyeball could cause floaters? It should not be the case. 2. If floaters are caused by eye fatigue, can they fade or disappear over a few months, or do floaters caused by eye fatigue typically resolve after a ...[Read More] Understanding Floaters: Causes, Symptoms, and Management Tips
Understanding Halo Effects Around Streetlights: Causes and Concerns
Seeing halos around streetlights at night? Hello, Doctor: When I look at streetlights at night, I see halos around them, with the center being brighter and the outer edges darker. Standing directly under the streetlight makes the halo larger, while moving further away makes it sm...
Dr. Gao Pilin Reply:
Hello Sharon: If there is no glaucoma and no cataract, seeing halos around lights is likely an issue with the cornea. Conditions such as corneal irregularity, corneal edema, and corneal opacity can cause this, but the most common cause is astigmatism. Your symptoms seem more alig...[Read More] Understanding Halo Effects Around Streetlights: Causes and Concerns