Understanding Black Shadows in Vision: Causes and Solutions
Eye floaters Hello, doctor. Recently, I have been experiencing what seems to be excessive eye strain. When I look at things, I notice black shadows, but they don't resemble the spots described in floaters; they appear more like black flashes of light.
Dr. Gao Pilin Reply:
Hello: It could be 1. Vitreous floaters: The vitreous is a transparent gel-like substance that fills the interior of the eye. When some fibers or debris affect the passage of light, it may create the sensation of shadows or flashes. 2. Retinal tear: If there is a small tear or br...[Read More] Understanding Black Shadows in Vision: Causes and Solutions
Managing Dry Eye and Glaucoma: Key Questions and Considerations
Inquiry about dry eye drops and glaucoma issues? I have had dry eye syndrome for a year. Can I continue using preservative-containing artificial tears covered by health insurance? What conditions indicate that it has improved? Initially, I needed to use the drops three to four ti...
Dr. Gao Pilin Reply:
Hello: Regarding the use of artificial tears: Generally, artificial tears are considered safe, even if they contain preservatives. However, if you experience adverse reactions or worsening symptoms after using artificial tears, please consult your physician for an evaluation and ...[Read More] Managing Dry Eye and Glaucoma: Key Questions and Considerations
Understanding Astigmatism: Insights from Eye Exams and Fatigue Effects
Astigmatism issues? Today, I went for a fundus examination. After that, I had a refraction test done on the computer, and the doctor said my astigmatism suddenly increased by 200 degrees, but the fundus was normal. The doctor mentioned that it might be caused by fatigue and advis...
Dr. Gao Pilin Reply:
Hello: Based on the situation you described, I personally believe the following points are relevant: The sudden increase of 200 degrees in astigmatism in the computer-generated refraction test may have the following causes: 1. Fatigue - As your doctor mentioned, vision can experi...[Read More] Understanding Astigmatism: Insights from Eye Exams and Fatigue Effects
Understanding Strabismus: Symptoms, Causes, and When to Seek Help
Strabismus issues? I have high myopia, with both eyes around -700. Recently, I noticed that when I relax and remove my glasses, I see double when looking at my fingers at a distance of about 15 to 30 centimeters. However, when I look with one eye, I do not experience this. I aske...
Dr. Gao Pilin Reply:
Hello: Based on your description, there may be several issues: 1. Diplopia: Seeing two fingers while relaxed is a normal phenomenon, as your eyes are focused on a distance, causing nearby objects to appear double. 2. Focusing issues: You mentioned difficulty maintaining focus on ...[Read More] Understanding Strabismus: Symptoms, Causes, and When to Seek Help
Is Progressive Multifocal Lenses Suitable for Intermittent Exotropia?
Issues Related to Glasses for Intermittent Exotropia Hello, Doctor! Is it suitable for someone with intermittent exotropia to wear progressive multifocal lenses? I have intermittent exotropia, and I found online that it's not recommended to use progressive multifocal lenses,...
Dr. Liang Ce Reply:
Recommendation: Please consult an ophthalmology medical facility for medical advice. Thank you. Wishing you good health![Read More] Is Progressive Multifocal Lenses Suitable for Intermittent Exotropia?
Understanding Prescription Changes: Is 775 Degrees Normal for My Left Eye?
Prescription lens degree issues? Hello Dr. Gao, I have had my eyes examined about three times in the past year, and my left eye consistently measures -7.50 diopters. However, when I get my glasses, I need -7.75 diopters for clearer vision, and it seems relatively less sharp compa...
Dr. Gao Pilin Reply:
Hello: It is normal for there to be a difference in visual acuity between the two eyes, so it is not unusual for the left eye to be less sharp than the right eye. Regarding the prescription for glasses, I recommend not exceeding the measured prescription, but slight adjustments c...[Read More] Understanding Prescription Changes: Is 775 Degrees Normal for My Left Eye?
Understanding Strabismus: Symptoms, Types, and Treatment Options
Strabismus issues? Hello, doctor. Recently, I've noticed some differences in my eyes compared to before, and I'm unsure if it might be strabismus. 1. When I close my right eye and focus on an object with my right eye open, I notice that the pupil of my left eye is posit...
Dr. Gao Pilin Reply:
Hello: 1. Based on your description, when you close one eye and focus on an object, the pupil of the other eye may be positioned abnormally. This could be a sign of latent strabismus. 2. It is also possible that when looking at nearby objects, there is insufficient convergence, c...[Read More] Understanding Strabismus: Symptoms, Types, and Treatment Options
Understanding Astigmatism in Children: Causes and Treatment Options
Inquiry about Astigmatism in Children Hello Doctor: I recently took my child to the hospital for a vision check, and it was found that before dilation, the left eye had 25 degrees of hyperopia with no astigmatism. After dilation, it measured 25 degrees of myopia and 100 degrees o...
Dr. Gao Pilin Reply:
Hello: Based on the data you provided, some of the values measured before and after dilation seem unreasonable. Typically, after dilation, myopia tends to decrease. I recommend taking your child to an ophthalmologist for a re-evaluation. If the vision is good, differences before ...[Read More] Understanding Astigmatism in Children: Causes and Treatment Options
Understanding Post-Cataract Surgery Glare: Causes and Solutions
Glare after cataract surgery? Hello Doctor: I underwent cataract surgery on July 7, 2023, where the surgeon implanted a monofocal aspheric toric intraocular lens and informed me that I would retain 2.00 diopters of myopia (I was approximately -5.00 diopters preoperatively, with a...
Dr. Cai Wenyuan Reply:
Observe the symptoms; if they persist, you may visit a medical center for evaluation.[Read More] Understanding Post-Cataract Surgery Glare: Causes and Solutions
Understanding C-Shaped Light Flashes: Eye Health Concerns Explained
Upon waking, experiencing eye movement with closed eyes and seeing white light? Hello Doctor, I have approximately 700 degrees of myopia and experience floaters. A few days ago, I underwent a thorough examination of my retina, and there were no issues at that time. However, start...
Dr. Cai Wenyuan Reply:
Observe the symptoms, and if they persist, seek medical evaluation.[Read More] Understanding C-Shaped Light Flashes: Eye Health Concerns Explained
Understanding Retinal Detachment Recovery and Flashing Lights in Vision
Hello, doctor? 1. I had retinal detachment in my right eye and underwent surgery on June 15, being discharged on June 20 (scleral buckle and cryotherapy). 2. After the retinal laser surgery, I experienced flashes of light. 3. Will the flashes eventually go away? 4. Is a second su...
Dr. He Jianxian Reply:
Hello, Mr. Flash: If the retina is well attached after surgery and there is no subsequent external traction, the sensation of flashes should gradually diminish. Dr. Ho Chien-Hsien, Ophthalmology Department, Nantou Hospital.[Read More] Understanding Retinal Detachment Recovery and Flashing Lights in Vision
Understanding Floaters: When to Seek Medical Attention and Management Tips
Changes in the condition of floaters? Vitreous degeneration and retinal traction can lead to the occurrence of flashes and floaters. I understand that if there is a sudden increase in floaters or if their increase affects vision, it is essential to seek immediate medical attentio...
Dr. Gao Pilin Reply:
Hello: Retinal traction and vitreous degeneration can indeed lead to the occurrence of flashes and floaters. If you notice a sudden increase or rapid escalation in floaters, or if these symptoms have any significant impact on your vision, it is advisable to seek medical attention...[Read More] Understanding Floaters: When to Seek Medical Attention and Management Tips
Understanding Visual Distortion: Is It a Cataract or Vision Defect?
Distortion of cataracts During the examination, the doctor mentioned that the distortion might be caused by cataracts. However, I noticed that when I look at the distorted area with one eye and place my finger on it, a portion of my finger seems to disappear (meaning a segment of...
Dr. Gao Pilin Reply:
Hello: Based on your description, you notice a missing area when viewing with one eye, and when you place your finger in that area, it also appears to be missing. Similarly, when you look with both eyes, you experience a similar situation where the defect area corresponds to the ...[Read More] Understanding Visual Distortion: Is It a Cataract or Vision Defect?
Understanding Visual Phenomena When Eyes Are Closed: What You Need to Know
Closed-eye imagery If you see light and shadow with your eyes closed, it is likely due to some electrophysiological phenomena generated by the retina and optic nerve continuing to function. This is something that everyone experiences and is generally not a cause for concern. If t...
Dr. Gao Pilin Reply:
Hello: Seeing light and shadow when closing your eyes is usually a normal physiological phenomenon. These light patterns may be caused by the electrical physiological responses of the retina and optic nerve, which can persist for a while after the eyes have been exposed to light ...[Read More] Understanding Visual Phenomena When Eyes Are Closed: What You Need to Know
Post-PRK Laser Surgery: Managing Eye Health and Digital Strain
Post-Retinal Laser Surgery Hello, doctor. I am 19 years old. When I was 15, I underwent PRK laser surgery due to high myopia, with both eyes having a vision exceeding 1000. During the period from 15 to 18 years old, I had multiple examinations of the fundus and found signs of ret...
Dr. Gao Pilin Reply:
Hello: Regarding the issue of eye degeneration and the possibility of undergoing laser surgery again, eye degeneration and retinal detachment are serious ocular conditions that require a thorough examination and diagnosis by a qualified physician. Whether degeneration is present ...[Read More] Post-PRK Laser Surgery: Managing Eye Health and Digital Strain
Understanding Eye Focus Issues: Causes, Symptoms, and Solutions
Focusing issues with the eyes? Hello, doctor. I am patient 198351. Today I visited the clinic, and they said that excessive fatigue can lead to convergence insufficiency, which causes my right eye to drift inward when I lose focus. They used a device similar to a flashlight and m...
Dr. Gao Pilin Reply:
Hello: Based on the symptoms you described, the physician at the clinic believes that your blurred vision may be due to eye strain and prolonged use of electronic devices. It is possible that there is some superficial damage to the cornea, which should heal on its own. Therefore,...[Read More] Understanding Eye Focus Issues: Causes, Symptoms, and Solutions
Understanding Eye Conditions: From High Pressure to Dry Eye Syndrome
Eye problems The eye condition initially involved elevated intraocular pressure and excessive discharge. Recently, the discharge has decreased, but there is a yellowish scar-like lesion on the inner lower eyelid. There was also a history of conjunctival edema. Currently, the intr...
Dr. Gao Pilin Reply:
Hello: Based on your description, you are experiencing occasional elevated intraocular pressure, a yellowish scar-like lesion on the inner lower eyelid, and conjunctival edema. These symptoms and diagnoses may be related to your vision issues and could result in inadequate improv...[Read More] Understanding Eye Conditions: From High Pressure to Dry Eye Syndrome
Understanding High Myopia: Symptoms, Concerns, and Common Myths
High myopia Hello, doctor. I have a few questions to ask: 1. I have high myopia of over 1000 degrees and experience floaters. Recently, when I turn off the lights at night and look at things, I notice a flickering similar to an old television (not flashes), but it only lasts for...
Dr. Gao Pilin Reply:
Hello: 1. This condition may be related to your myopia and floaters, but a specific diagnosis requires evaluation by an ophthalmologist. The sensation of flashing lights may be due to irregularities in the vitreous body, which is a common symptom of floaters. Additionally, an inc...[Read More] Understanding High Myopia: Symptoms, Concerns, and Common Myths
Understanding Vision Decline: Causes and Treatment Options
Vision deterioration Hello, doctor. I have been experiencing issues with allergic conjunctivitis and dry eye syndrome. Previously, I was using medications like Azelastine and Loteprednol. I tend to use my eyes a lot, and I also noticed floaters in my vision about two years ago, b...
Dr. Gao Pilin Reply:
Hello: 1. Glasses Prescription Issue: Since you have recently experienced a decline in vision, it may be due to the need for an adjustment in your glasses prescription. Changes in vision could be related to an increase in myopia. It is advisable to visit an ophthalmologist for ...[Read More] Understanding Vision Decline: Causes and Treatment Options
Understanding Eye Focus Issues: Causes and Solutions for Blurry Vision
Focusing issues with the eyes? Hello doctor, I am the person referred to as #198282. According to what you said, it might be due to inaccurate focus adjustment when fatigued. However, I still noticed this issue when I woke up this morning, although the frequency was less than in ...
Dr. Gao Pilin Reply:
Hello: Based on the video you provided, I believe your issue may be insufficient convergence or strabismus. Your left eye (or the right eye if mirrored) tends to drift outward after prolonged use. Insufficient convergence can have various causes. Here are some possible reasons: ...[Read More] Understanding Eye Focus Issues: Causes and Solutions for Blurry Vision