Understanding Yellow Flashes and Visual Disturbances in Eye Health
Waking up suddenly to see yellow flashes of light? Hello Doctor: I have floaters and have previously undergone laser surgery for retinal holes. I am nearsighted with a prescription of about -200 and astigmatism around -300. Recently, I have been experiencing a lot of issues. When...
Dr. He Jianxian Reply:
Dear Ms. Anonymous, 1. I cannot explain why your afterimage condition has worsened. 2. I cannot explain why you suddenly woke up to see a bright yellow light that then returned to normal; it may be due to pressure on the eyes, but clinically, it cannot be determined. 3. If you h...[Read More] Understanding Yellow Flashes and Visual Disturbances in Eye Health
Is Long-Term Use of Mydriatics Safe for Open-Angle Glaucoma Patients?
Is it suitable for patients with open-angle glaucoma to use mydriatics long-term to relieve eye fatigue? Hello, I am a 54-year-old patient with open-angle glaucoma, cataracts, and myopia. 1. What are the indications for using mydriatic agents in ophthalmology? From the informat...
Dr. He Jianxian Reply:
Dear Ms. Li, 1. Mydriatic agents are not intended for routine use to alleviate eye fatigue, and this applies to both glaucoma and non-glaucoma patients. 2. Clinically, the routine use of mydriatic agents as a choice for relieving eye fatigue is not recommended; please discuss th...[Read More] Is Long-Term Use of Mydriatics Safe for Open-Angle Glaucoma Patients?
Understanding Macular Holes: Risks of Vision Loss After Surgery
Vitreous macula Hello doctor, following up on the previous question regarding the macular hole: Is it possible to have very low vision or blindness after surgery? Both of my eyes are currently in this condition, and I can only observe. I'm really worried, thank you!
Dr. Gao Pilin Reply:
Hello: Macular holes are a condition that occurs in the macula of the eye, which is the area of the retina responsible for central vision. Macular holes can lead to symptoms such as decreased vision, central scotomas, or distortion. According to studies, approximately 90% of pati...[Read More] Understanding Macular Holes: Risks of Vision Loss After Surgery
Sudden Blackout in Vision: Understanding Eye Health Concerns
The eyes quickly turn black for a second? Hello Doctor: I have high myopia and a few months ago I discovered I have floaters, so I have been frequently visiting clinics for check-ups, even going to a retina specialist for further examinations. I went once at the end of February, ...
Dr. Gao Pilin Reply:
Hello: The symptoms and medical history you described, particularly the high myopia and the previous occurrence of floaters, are indeed concerning. High myopia increases the risk of retinal issues, including retinal tears and retinal detachment. Although the physician did not fin...[Read More] Sudden Blackout in Vision: Understanding Eye Health Concerns
Understanding Monocular Diplopia: Causes and Concerns for Eye Health
Monocular diplopia Hello, Dr. Gao. Thank you for your previous response! After researching some information and consulting with my doctor, I still have a few questions I would like to ask: 1. For individuals with congenital amblyopia (approximately +500 diopters in both eyes), i...
Dr. Gao Pilin Reply:
Hello: 1. Individuals with congenital amblyopia may not necessarily have inferior optic nerves compared to those without the condition. Thinning of the optic nerve may be associated with glaucoma, especially if there are signs of nerve fiber thinning, but the condition of the opt...[Read More] Understanding Monocular Diplopia: Causes and Concerns for Eye Health
Post-Retinal Detachment Surgery: Addressing Vision Distortion and Misalignment
After retinal detachment surgery, there is a distortion in the visual field and the images from both eyes cannot be fused? Hello! About a year ago, I underwent retinal detachment surgery on my right eye. Due to a strong inflammatory response because of my young age, the doctor me...
Dr. He Jianxian Reply:
Dear Mr. Hsu, The distortion or deformation of the visual field caused by retinal surgery or disease is indeed very challenging to address. The possibility of treatment and improvement varies from person to person, and it is essential to follow up with your surgeon for specific...[Read More] Post-Retinal Detachment Surgery: Addressing Vision Distortion and Misalignment
Understanding Floaters: What They Mean for Your Eye Health
Suspected floaters? Hello, doctor. When I look at the blue sky, I see objects that resemble floaters (worm-like, transparent like microorganisms under a microscope), but this phenomenon does not occur when I look at a white wall. I would like to ask if this situation could possib...
Dr. Gao Pilin Reply:
Hello: Based on your description, the appearance of worm-like, transparent floaters in your vision may be a symptom of vitreous floaters. Vitreous floaters are a common visual phenomenon, usually caused by the degeneration or liquefaction of the vitreous body, which can lead to t...[Read More] Understanding Floaters: What They Mean for Your Eye Health
Understanding Flashing Lights in Vision for High Myopia Patients
Flashes of light in the eyes? Hello Doctor, I have high myopia with prescriptions of -750 and -950 diopters. Recently, I have suddenly experienced flashes of light, but they only occur when I move from a dark area to a bright one. Specifically, if I stay in a dark place for about...
Dr. Gao Pilin Reply:
Hello: The phenomenon you mentioned, where flashes appear in your peripheral vision when blinking while transitioning from a dark to a bright environment, and which lasts for several minutes before disappearing, may be related to issues with the retina or vitreous body. Here are ...[Read More] Understanding Flashing Lights in Vision for High Myopia Patients
Understanding Dark Shadows in One Eye: Possible Causes and Next Steps
The left eye feels darker, with a shadow in a specific area? In recent days, I have noticed an imbalance in the light perception between my two eyes. Upon comparison, I found that my left eye perceives light as darker, and there seems to be an irregular circular shadow in the cen...
Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, the uneven light perception in your left eye and the irregular circular shape resembling an afterimage from looking at a bright light may indicate an issue related to eye health. Floaters are typically caused by the liquefaction of the ...[Read More] Understanding Dark Shadows in One Eye: Possible Causes and Next Steps
Understanding Cataract Checks: What Eye Exams Reveal About Your Vision
Cataract Examination (Sequence 207641) Thank you, Dr. Gao, for your previous response. I would like to ask about my recent visits to the ophthalmologist over the past three months regarding the issue of an enlarged optic disc. During this time, I have consulted several eye doctor...
Dr. Gao Pilin Reply:
Hello: Based on the information you provided, ophthalmologists typically conduct comprehensive eye examinations, including assessments of the retina and optic nerve, using various devices and techniques such as fundus photography and optical coherence tomography. These examinatio...[Read More] Understanding Cataract Checks: What Eye Exams Reveal About Your Vision
Understanding Cataract Checks: What to Expect During Eye Exams
Cataract examination I would like to ask if a general eye examination typically detects cataracts. If the doctor did not specifically mention it, does that mean there are none? Previously, I experienced blurred vision and went for an OCT examination, where the doctor did not indi...
Dr. Gao Pilin Reply:
Hello: A general ophthalmic examination typically includes an assessment of the lens to check for cataracts or other lens-related issues. However, if the ophthalmologist did not specifically mention any abnormalities with the lens during the examination, it may indicate that your...[Read More] Understanding Cataract Checks: What to Expect During Eye Exams
Post-Retinal Detachment Surgery: Understanding New Symptoms
Post-retinal detachment surgery? Hello doctor, I underwent retinal detachment surgery at Chang Gung Memorial Hospital on March 15 this year. The surgery was successful, but today, on April 17, I woke up to find that there are suddenly two small black circles connected to the air ...
Dr. Gao Pilin Reply:
Hello: It is possible that the two small bubbles nearby are not a concern. However, we cannot rule out the possibility of some new issues arising. It is advisable to consult your ophthalmologist as soon as possible if the small black circles persist, in order to determine the cau...[Read More] Post-Retinal Detachment Surgery: Understanding New Symptoms
Managing Complex Vision Issues: Myopia, Hyperopia, and Astigmatism in Teens
One eye has myopia with astigmatism, while the other eye has hyperopia with astigmatism, resulting in a significant disparity in vision? The patient is 14 years old, with hyperopia of +3.25 diopters and astigmatism of +0.75 diopters in the left eye, and myopia of -0.75 diopters a...
Dr. Gao Pilin Reply:
Hello: 1. The purpose of mydriatic agents is to paralyze the ciliary muscle, temporarily impairing the eye's ability to adjust focus. This helps relax the eye muscles for fitting glasses or examining the fundus, and can effectively suppress the progression of myopia, but it ...[Read More] Managing Complex Vision Issues: Myopia, Hyperopia, and Astigmatism in Teens
Understanding Temporary Vision Blackouts: Causes and Solutions
Blackout of vision for a second? Hello Doctor, my eyes occasionally experience a sudden blackout, similar to a light bulb flickering, lasting less than a second. This occurs in both eyes simultaneously and the frequency varies (from once every few days to infrequently). This has ...
Dr. Gao Pilin Reply:
Hello: This condition is medically referred to as "transient visual obscuration," also known as "temporary vision loss." It is a common ocular symptom that can be caused by various factors, including: 1. Ocular blood supply issues: This is one of the most co...[Read More] Understanding Temporary Vision Blackouts: Causes and Solutions
Understanding Vitreous Degeneration and Its Impact on Retinal Health
Vitreous degeneration Hello, doctor. I would like to ask if vitreous degeneration can lead to retinal degeneration. Besides retinal tears and detachment, are there any other possibilities?
Dr. Gao Pilin Reply:
Hello: Vitreous degeneration itself usually does not directly lead to retinal degeneration. The vitreous is a transparent gel-like substance within the eye that fills most of the posterior chamber, providing support and shape to the eyeball. As people age, the vitreous may gradua...[Read More] Understanding Vitreous Degeneration and Its Impact on Retinal Health
Understanding Vitreous Degeneration and Its Impact on Macular Health
Vitreous Macula Hello Doctor: I have vitreous degeneration, which is pulling on the macula and causing a tear. During my last two follow-up visits, the vitreous continued to exert traction, and the tear has been getting larger. The doctor mentioned that a vision of 0.9 is still g...
Dr. Gao Pilin Reply:
Hello: 1. Risk of Macular Hole The macula is an important area of the retina responsible for central vision. A macular hole refers to a defect in the macula that can lead to severe vision loss, distortion, and other symptoms. In some cases, a macular hole may result in blindn...[Read More] Understanding Vitreous Degeneration and Its Impact on Macular Health
Understanding Vitreous Degeneration: Symptoms, Causes, and Risks
Vitreous degeneration Hello, doctor. I am currently 18 years old. I have myopia of over 100 degrees in my left eye and over 300 degrees in my right eye. A few months ago, I noticed many transparent floaters in my vision, including round dots and thread-like shapes, and sometimes ...
Dr. Gao Pilin Reply:
Hello: 1. Yes, based on the symptoms you described, including the appearance of floaters and the results of the dilated fundus examination, this may be a manifestation of vitreous degeneration. The vitreous is the gel-like substance inside the eye, which may gradually degenerat...[Read More] Understanding Vitreous Degeneration: Symptoms, Causes, and Risks
Training Ciliary Muscles: Risks and Benefits for High Myopia
Ciliary muscle training and retinal tears? Hello, doctor. A while ago, I went to an optical shop to get glasses, and I mentioned to the optometrist that sometimes things appear double. The optometrist suggested that I could train my ciliary muscles by practicing convergence exerc...
Dr. Gao Pilin Reply:
Hello: Ciliary muscle training is generally considered a safe and effective method for improving vision. It can help relax the ciliary muscle, alleviate eye fatigue, and improve vision issues such as myopia and presbyopia. However, there is some controversy regarding the suitabil...[Read More] Training Ciliary Muscles: Risks and Benefits for High Myopia
Understanding Floaters and Light Spots: Are They Related to Myopia?
Occasionally, bright spots appear in the vision; this is known as floaters? Hello Doctor: I have high myopia (both eyes at -10.00 diopters); a few months ago, I noticed symptoms of floaters. Currently, the floaters I see are semi-transparent floating objects, and occasionally, wh...
Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, your eyes may be undergoing some changes that could be related to your high myopia. Floaters typically present as the translucent specks you mentioned, and the rapidly moving gray-black dots you see when tired also align with one of the...[Read More] Understanding Floaters and Light Spots: Are They Related to Myopia?
Understanding Asymmetrical Peripheral Vision: Causes and Concerns
Issues with peripheral vision in both eyes? Hello Doctor, I recently noticed that the afterimage in my left eye seems to be clearer than in my right eye. Additionally, I feel like my eyeball has a bit of difficulty turning to the right when looking at the afterimage on that side ...
Dr. Gao Pilin Reply:
Hello: 1. The afterimage in your left eye appears clearer than in your right eye, and you feel a slight difficulty in turning your eyeball to the right: This sensation may be related to visual coordination between your eyes. Sometimes, the coordination can be affected, leading ...[Read More] Understanding Asymmetrical Peripheral Vision: Causes and Concerns