High myopia, Ophthalmology FAQ

Understanding Black Shadows in Vision: Causes and When to Seek Help

Blinking shadows Hello, last night when I turned off the lights to go to sleep, I noticed a black afterimage in the center of my vision when I blinked (similar to the brief afterimage you see after looking at a bright light, and it occurs in both eyes, circular in shape). It grad...

Dr. Gao Pilin Reply:
Hello, college student: It would be best to have your condition checked for peace of mind. If it is not floaters, it may be a retinal issue. However, it should be harmless. The ophthalmology department at Puzi Hospital in Taiwan is open on Monday, Tuesday, Thursday, and Friday mo...

Is Bending Over While Washing Hair Safe for High Myopia?

Eye problems Hello, Dr. Gao: I would like to inquire whether bending over to wash my hair is good for high myopia. Thank you.

Dr. Gao Pilin Reply:
Hello Amy: Bending over to wash your hair should not affect high myopia. At the Puzih Hospital Eye Department in Taiwan, the hours are Monday, Tuesday, Thursday, and Friday from 8:00 AM to 12:00 PM, and Wednesday from 2:00 PM to 4:30 PM. Online responses can only serve as a refer...

Understanding Floaters and Retinal Health: Key Questions Answered

Floaters and related issues? Thank you, doctor, for your response. I would like to ask the doctor the following questions: 1. What lifestyle habits or bad habits have a greater impact on retinal diseases? 2. Regarding the increase in floaters (such as spots), does a slight incr...

Dr. Gao Pilin Reply:
Hello Hank: 1. What bad habits or hobbies in daily life have a greater impact on retinal diseases? Answer: Excessive eye strain (overuse of electronic devices), exposure to ultraviolet rays, and blue light can significantly harm the retina. 2. Does a slight increase in floate...

Understanding High Myopia and Its Connection to Floaters and Retinal Risks

High myopia and floaters? Hello, doctor. I would like to ask you a few questions: 1. I have high myopia, with pre-dilation measurements of 1025/1050 and post-dilation measurements of 925/950. At my age, will my myopia continue to increase? 2. I have regular check-ups for floa...

Dr. Gao Pilin Reply:
Hello HANK: 1. I have high myopia, with measurements of 1025/1050 before dilation and 925/950 after dilation. Will my myopia increase at this age? Answer: Generally, it is unlikely to increase. 2. I regularly check for floaters, and there are no major issues. I observe that b...

Understanding Optic Nerve and Retina Thinning in High Myopia

Optic nerve & retina Hello Doctor: I have high myopia (550, 600). Yesterday, I underwent a routine dilated eye exam (showing retinal thinning, non-patterned degeneration) and also had a fundus scan. The report indicated that the optic nerves in both eyes are thinning, and I n...

Dr. Gao Pilin Reply:
Hello May: The thinning of the optic nerve can sometimes be congenital, so a visual field test is necessary to determine if there are any abnormalities. High myopia can lead to thinning of the peripheral retina, but it does not necessarily result in holes or retinal detachment. T...

Understanding Floaters After Eye Injury: Causes and Solutions

Traumatic floaters Hello, doctor. Three days ago, I was hit near my temple by a volleyball while playing. The next day, I noticed a strange black spot and a black circle appearing in my vision, and it almost always looks the same. I quickly went to an ophthalmologist that evening...

Dr. Gao Pilin Reply:
Hello Mr. Hsu: If you have a corneal injury, you should not see black dots or black circles. The black circles may be Weiss rings, which occur when the vitreous detaches from the retina, creating a ring at the optic nerve. Over time, this ring may deform, shrink, or sink. You can...

Understanding Physiological Blind Spots and Visual Distortions

Questions about physiological blind spots? My left eye has a prescription of nearly 800 to 900, while my right eye is 750. I have a significant number of floaters in both eyes, which has been a longstanding issue. I have been taking lutein for over a year, and during my annual he...

Dr. Gao Pilin Reply:
Hello, Hsuan: The blind spot refers to an area where no visual information is perceived. Are you referring to the regions surrounding the blind spot? The blind spot is located at the optic nerve head, and in cases of high myopia, there may be some traction or undulation of the re...

Sudden Blurry Vision in Left Eye Upon Waking: Causes and Concerns

Sudden blurred vision in the left eye upon waking up? Hello doctor, today when I woke up, my left eye suddenly had blurred vision (like looking through a veil) for about 3 to 5 minutes. Could this be related to dry eye syndrome? I have been suffering from dry eye syndrome for ten...

Dr. Cai Wenyuan Reply:
Hello: If you have pressed on your eyeball, observe the situation. If the symptoms persist, seek medical attention. Wishing you safety and health. Sincerely, Dr. Tsai Wen-Yuan, Director of the Ophthalmology Department, Taoyuan General Hospital, Ministry of Health and Welfare.

Do You Need New Glasses After Strabismus Surgery?

Is it necessary to get new glasses after strabismus surgery? Two weeks ago, I underwent strabismus surgery to correct an inward deviation of my left eye, which was between 30 to 35 degrees. I did not have any issues with double vision or strabismus during my childhood, but severe...

Dr. Gao Pilin Reply:
Hello Lillian: If you are concerned about different prescriptions, you can have the optical company check your glasses to determine if the prescription of your old glasses matches the current one. If there is not much difference, there is no need to worry about the recovery of yo...

Impact of Vitreous Opacity and Dental Cleaning on Eye Health

Does vitreous opacity affect the eyes after dental cleaning? Dear Director Gao, I apologize for the interruption. My left eye underwent scleral buckle surgery for retinal detachment in 2007, caused by high myopia. I had cataract phacoemulsification surgery on both eyes in June l...

Dr. Gao Pilin Reply:
Hello Benjamin, 1. Is there a chance for my left eye's vision to recover to at least 0.4? After undergoing laser treatment for secondary cataracts, vision should improve. If there is no improvement, we need to consider several factors. The most important factors are high my...

Impact of Eye Drops on Vision Clarity and Eyeglass Prescription

Issues with Prescription Glasses Hello Doctor, thank you for your previous response, and I apologize for bothering you again. I would like to ask about my current use of eye drops (presumably referring to "Aifume"). I am experiencing side effects that include blurred vi...

Dr. Gao Pilin Reply:
Hello, C123: The blurriness caused by astigmatism is likely not due to a change in refractive error. You can try checking if the prescription obtained from an eye exam can improve your vision; if it does, you may need to get new glasses. If it does not improve, please consult a p...

Understanding Visual Field Tests for High Myopia and Cataracts

I would like to inquire about issues related to visual field testing in individuals with high myopia? Hello, doctor. I would like to ask some questions regarding visual field testing. Aside from glaucoma, which can show localized areas of vision loss, 1. In patients with high myo...

Dr. Gao Pilin Reply:
Hello, 1. Changes in the retina caused by high myopia can lead to visual field defects, which are discontinuous and related to the location of the retinal damage. The visual field changes associated with high myopia and glaucoma include arcuate defects extending from the superi...

Understanding Sudden Flashing Lights in Vision: Causes and Concerns

Sudden appearance of flashing lights in the vision, resembling visual noise? Hello, doctor. Recently, due to paperwork, I have been spending a lot of time in front of the computer screen. However, this afternoon and evening, after using the computer for about an hour, I experienc...

Dr. Gao Pilin Reply:
Hello Ashu: Usually, seeing flashes of light is caused by traction on the retina. Sometimes it lasts for a short time, just a quick flash, and there may not be any changes in vision; it is not related to fatigue, and warm compresses are not very helpful. If there are no abnormali...

Understanding Retinal Thinning: Should You Consider Preventive Laser Treatment?

Retinal thinning I would like to ask the doctor: I have high myopia, and during my examination last week, my left eye was fine, but my right eye had a thin area. The doctor said to just have regular check-ups, but I found online that some doctors perform preventive laser treatmen...

Dr. He Jianxian Reply:
If your mental state is affected by this situation, you can directly ask your physician for a retinal laser treatment, which should help alleviate your anxiety.

Understanding Out-of-Pocket Costs for Cataract Surgery with High Myopia

What is the out-of-pocket cost for cataract surgery? Hello, I have high myopia (1200-1300 degrees) and about 10 years ago, I underwent laser surgery for retinal detachment with an unspecified lateral retinal tear. During a routine follow-up eye examination last year, my doctor fo...

Dr. Gao Pilin Reply:
Hello, Ajie: The other eye can undergo cataract surgery at your own expense. The costs vary by hospital; if you opt for the artificial lens covered by health insurance, it may total around 30,000 to 40,000 TWD. If you choose to pay for the artificial lens out of pocket, there are...

Concerns About Retinal Thinning and Air Travel Safety

Regarding retinal thinning and flying issues? Good evening, Director. I apologize for interrupting your busy time! I have referred to previous questions from others, but it seems there are no similar inquiries, so I would like to ask you—my father has a history of two retinal tea...

Dr. He Jianxian Reply:
Basically, if there are issues with the retina, an annual follow-up examination once or twice is sufficient. If a recent follow-up has been done, there is no need to have another examination specifically for flying. Air travel should not cause retinal tears. Generally, just be ca...

Understanding Retinal Issues: Managing Blurry Vision and High Myopia

Retinal issues causing blurred vision? Hello, Doctor. Today, I noticed that my distance vision in my left eye is blurry, so I immediately went to see an ophthalmologist. Additionally, my left eye has elevated intraocular pressure. The doctor promptly arranged for a dilated eye ex...

Dr. Gao Pilin Reply:
Hello, 1. The doctor mentioned that a thinner peripheral retina is a common condition among individuals with high myopia and advised not to panic. Is that correct? Answer: Yes, that is correct. People with myopia tend to have larger eyeballs, which results in a thinner periphe...

Understanding Floaters, Myopia, and Allergic Conjunctivitis: Key Insights

Floaters, myopia, allergic conjunctivitis? Hello Doctor, I have been seeing transparent lines or small black dots in my vision, with about one on the left and two on the right. I have a prescription of -6.00 diopters and astigmatism of -1.25, indicating high myopia. I would like ...

Dr. Gao Pilin Reply:
Hello, Ah Yu: 1. About six months ago, I had a dilated eye exam, and there were no issues with my macula. Is there anything specific I need to pay attention to? Answer: Just keep an eye on your vision; if you notice any changes from your usual sight, please consult a doctor im...

Understanding Visual Disturbances: Shadows, Afterimages, and Conjunctivitis

After seeing red light in the dark, the eyes immediately perceive a cyan-green afterimage, along with conjunctivitis and retinal issues? Hello, I have high myopia. I just had an eye examination in March of this year (which included OCT and slit lamp examination of the retina). Th...

Dr. He Jianxian Reply:
1. Afterimages are a normal phenomenon and should not be a cause for concern. 2. It may feel like floaters. 3. I cannot answer without knowing what you are describing. 4. Conjunctivitis and eye discharge are not significantly harmful to the eyes, but they can cause discomfo...

Impact of Welding Flash on Retinal Health: Risks and Recovery

The effects of arc welding flash on the retina? Hello Doctor: I have high myopia (left eye -775, right eye -650) and experience floaters. I work in a factory and occasionally come into contact with welding-related tasks. This afternoon, while working, I accidentally looked direct...

Dr. Gao Pilin Reply:
Hello, Ashu: 1. The ultraviolet rays generated during welding can more easily cause damage to the cornea, but there should be no significant harm to the retina in a short period of exposure. 2. The black shadow experienced at that moment is due to the metabolism of rhodopsin in ...

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