retinal exam, Ophthalmology FAQ

Can Wide-Angle Imaging Check Retina Without Dilation for High Myopia?

Can a retinal examination be performed without dilation using the fundus camera? Due to light sensitivity, I find car headlights very bright at night, and I have a history of high intraocular pressure, which makes me unsuitable for dilated fundus examinations. 1. I would like to ...

Dr. Cai Wenyuan Reply:
Non-mydriatic fundus photography is generally used for screening diabetic retinopathy. However, to examine the retina thoroughly, dilation is still necessary.

Understanding Retinal Disorders: Holes, Myopia, and Future Risks

Retinopathy 1. Is a retinal tear considered a type of retinal disease? 2. If a person has high myopia but their retina is healthy, is the likelihood of developing a retinal tear in the future high? 3. If a retinal examination shows no thinning, will it thin out on its own in ...

Dr. Gao Pilin Reply:
Hello: 1. Yes, retinal tears are a type of retinal pathology. 2. High myopia is one of the risk factors for retinal tears, but not everyone with high myopia will experience a retinal tear. Other factors, such as age, overall eye health, and retinal thickness, can also influence t...

Understanding Flashing Lights in Vision: Causes and Eye Exam Alternatives

Flashes of light resembling shooting stars when closing the eyes? Hello, Doctor. 1) I have recently noticed that sometimes when I close my eyes tightly, I see bright white lights that resemble shooting stars, moving around the periphery of my vision. Could this be caused by a r...

Dr. He Jianxian Reply:
Hello Ms. Huang: 1. Forcefully closing your eyes may exert pressure on the eyeball, and this external pressure could potentially cause traction on the retina, which may explain the flashes of light you are experiencing. 2. Given your age, the likelihood of developing acute g...

Understanding Nighttime Visual Disturbances in High Myopia Patients

Objects seen in front of you when the lights are turned off at night? Hello Doctor: I have high myopia and have been experiencing floaters in both eyes for over three years. There is liquefaction in the vitreous body, but my retinal examination is normal. When I turn off the ligh...

Dr. Gao Pilin Reply:
Hello: Based on your description, you have high myopia, floaters, and vitreous liquefaction, and you experience the phenomenon of seeing white smoky objects at night. This situation is likely not caused by cataracts. Cataracts are a condition characterized by the clouding of the ...

Post-Laser Treatment Care for Retinal Holes: Tips and Precautions

Postoperative care after retinal tear laser surgery? Hello Doctor, I have myopia of 500-600 degrees and underwent laser surgery for myopia in the 90s. Recently, I have been experiencing floaters (which are fluctuating and not fixed, sometimes not visible) and visited a doctor for...

Dr. He Jianxian Reply:
Hello Tang Tang: 1. Applying a warm compress to the eyes is fine. 2. You can engage in normal activities, but you should still try to avoid sudden and intense changes in temperature. Dr. He Jianxian, Ophthalmology Department, Nantou Hospital.

Understanding Eye Flashes: Causes and Concerns for High Myopia Patients

Flashes of light in the eyes? Hello, Doctor. I have high myopia, with both eyes approximately over 900 degrees. I also have a lot of floaters. Last August, I experienced eye pressure and discomfort, along with flashes of white light. I had a fundus examination in October, and the...

Dr. He Jianxian Reply:
Hello Serein: If the retinal examination shows no issues, there generally shouldn't be any major problems. As for why you suddenly experienced a few seconds of darkness or a flash of white light, I apologize for not being able to provide a definitive answer regarding the sit...

Understanding High Eye Pressure: Treatment, Management, and Concerns

Ocular hypertension Hello, Doctor. I would like to ask some questions regarding ocular hypertension. During my first visit, I experienced frequent flashes of light, and upon measurement, my intraocular pressure was found to be elevated, with readings of 21 and 26 in each eye. I a...

Dr. He Jianxian Reply:
Hello, 1. Elevated intraocular pressure must be monitored several times before a definitive conclusion can be made. It is advisable to perform a visual field test at home after confirming high eye pressure, as this will help determine if glaucoma is present. 2. The current in...

Understanding Retinal Issues: What to Know About Floaters and Visual Disturbances

Retinal-related issues? Hello, Doctor Gao. I am a 31-year-old engineer with high myopia (both eyes over -10.00 diopters, and astigmatism over -4.00 diopters). Two days ago (March 10), I went to an ophthalmology clinic for a retinal examination. The doctor said there were currentl...

Dr. Gao Pilin Reply:
Hello: 1. Floaters are a common ophthalmic condition that causes you to see images resembling small flying insects in your field of vision. When a doctor mentions that "floaters have increased," it typically refers to these images becoming more prominent or appearing ...

Understanding Retinal Health: Risks and Precautions After Eye Trauma

Retinal issues Hello Doctor: Due to my high myopia and astigmatism (both eyes -1000, astigmatism -400), I had a retinal examination a few days ago at the age of 31. The doctor said my retinal condition is normal, but the peripheral retina has become thinner, and I was advised to ...

Dr. Gao Pilin Reply:
Hello: Your eye condition has progressed to high myopia and astigmatism, and the peripheral retina has become thinner. Therefore, any impact to the head should be taken seriously. Head trauma can lead to retinal detachment, especially if there are pre-existing issues with your ey...

Understanding the Eye Opening in Darkness Phenomenon: Insights from an Eye Specialist

Regarding the phenomenon of opening eyes in the dark? Hello, Dr. Gao. I'm glad that you are still providing consultation services to patients during the New Year. Thank you. Last night, while I was sleeping, I suddenly opened my eyes and saw a phenomenon resembling spider we...

Dr. Gao Pilin Reply:
Hello: This phenomenon of spider webs is most commonly caused by vitreous degeneration, similar to floaters, but with different shapes. You can observe it yourself; if there are no other issues, it should not be a concern.

Understanding Afterimages: Causes and Concerns for Eye Health

Afterimages from bright light? Hello doctor, I have floaters and my prescription is -800 degrees. Recently, a retinal examination indicated that everything is normal. However, after looking at a light source (like a round light bulb), when I close my eyes, I see multiple white ci...

Dr. Gao Pilin Reply:
Hello: It should be an afterimage, which is a physiological phenomenon of visual persistence. There's no need to worry. Please refer to: https://bit.ly/3XMUT7t

Understanding Retinal Exams: Do Non-Dilated Checks Work?

Questions about fundus examination? Hello, Doctor Gao. I am a patient with floaters and I regularly undergo dilated eye examinations. I previously visited a clinic for an examination where they did not perform dilation; they only used an indirect ophthalmoscope and a flashlight. ...

Dr. Gao Pilin Reply:
Hello: Using a direct ophthalmoscope or a slit lamp with lenses, sometimes it is possible to perform an examination without dilation. As for the directions—up, down, left, right, upper left, and lower left—they do not cause any impact.

Understanding Thin Optic Nerve and Astigmatism Issues in Myopia

Thinning of the optic nerve and astigmatism issues? Hello, Doctor Gao. Due to high myopia, I have been self-paying for eye examinations at an ophthalmology clinic for the past two years, with my prescription being around -7.50/-7.75. After reviewing my OCT report, I found that my...

Dr. Gao Pilin Reply:
Hello: 1. If the visual field is normal, there should be no issues. 2. Astigmatism should be corrected based on the measured degree, with clarity as the principle. 3. Regarding 4. An excessively large pupil can affect night vision; a diameter over 6mm may have an impact, but it s...

Understanding Eye Pressure Issues: Symptoms, Treatments, and Tests

Eye problems Hello Doctor: On around October 28, I went to the clinic for a fundus examination but was informed that my left eye had an intraocular pressure of 22 and my right eye had 19, making it impossible to perform the fundus examination. I was told that using a dilating age...

Dr. Gao Pilin Reply:
Hello: 1. If dilation is not performed and peripheral vision can still be assessed, non-dilated ultra-widefield fundus photography can be used, although this equipment may not be available everywhere. Therefore, dilation is the simplest method. 2. Elevated intraocular pressure is...

Understanding Eye Pressure: Concerns and Management for Glaucoma

Intraocular pressure issues? Hello, I apologize for the lengthy message. On July 12, I went to a general clinic for a retinal examination and found my intraocular pressure (IOP) to be 24 and 25 mmHg (after 5 air puffs). The doctor suspected glaucoma. Two weeks later, on July 18, ...

Dr. Gao Pilin Reply:
Hello: 1. It is beneficial to have follow-ups at the same clinic. This allows the physician to monitor your changes effectively. 2. The difference measured by a properly functioning machine should not be significant. You can go to a clinic you trust. 3. If managed properly, it is...

Understanding Eye Flashes: When to Seek Medical Attention

Flashes of light in the eyes? Hello Dr. Gao, I had retinal laser treatment about 6 to 7 years ago. On the morning of October 13th (Thursday), I suddenly noticed a flash of light in my eye, approximately the size of a smartphone, which has not disappeared since. I had a follow-up ...

Dr. Gao Pilin Reply:
Hello: It is advisable to get checked again; being cautious is always better. Inform your physician about your condition, and they will conduct the necessary examinations for you.

Understanding Eye Flashes: Symptoms and Causes Explained

Flashes of light in the eyes? Hello, doctor. Here's the situation: I have noticed that when I just wake up or am about to fall asleep, I see flashes of light in bright areas, but not in completely dark places. The flashes do not appear in the corners of my eyes; they occur i...

Dr. Gao Pilin Reply:
Hello A: This is more likely to be a visual phenomenon rather than vitreous detachment. The retinal examination showed no issues, so there is no need to worry.

Understanding Retinal Exams: Are Different Methods Effective?

Fundoscopic examination Hello, Doctor. I would like to ask you about an issue I experienced today with flashes in my vision. I went to a nearby hospital and received dilating drops for an examination. However, during a previous dilated examination for potential retinal tears or d...

Dr. Cai Wenyuan Reply:
There is also this method.

Understanding Retinal Ghost Images Upon Waking: Causes and Concerns

Upon waking and opening my eyes, I see a mesh-like afterimage? Hello, doctor. I have myopia of -5.50 diopters and floaters. I experience flashes in my peripheral vision several times a day, but I have had my retina examined (with dilation performed manually by a doctor) and there...

Dr. He Jianxian Reply:
Hello: Based on your description, it does not seem to be a case of photopsia. Currently, I have not encountered any patients with similar symptoms in clinical practice, so I am unable to answer your question. Dr. He Jianxian, Ophthalmology Department, Nantou Hospital.

Understanding Floaters: Causes, Concerns, and When to Seek Help

There are many cases of floaters? I recently have been experiencing some issues that I suspect might be related to psychological stress. I had a retinal examination that showed no problems, and usually, when I look at a blue sky or a solid background, I don't notice many flo...

Dr. Gao Pilin Reply:
Hello Mr. Chen: Based on your description, it seems you have floaters. Since the retinal examination showed no issues, there is no need to worry. Typically, floaters are not associated with retinal detachment, so there is no need for excessive concern.

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