Halos around lights, Ophthalmology FAQ

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Light Sensitivity and Halo Effects After Steroid Eye Drops: What to Know

After using corticosteroids, symptoms such as photophobia, halos, and an increase in rainbow-colored rings may occur? Hello Doctor, I have posterior subcapsular cataracts and keratoconus (with astigmatism of 275 in the left eye and 200 in the right eye). On April 13, I visited th...


Dr. Cai Wenyuan Reply:
Observe and see if the symptoms persist; if they do, seek medical evaluation.

[Read More] Light Sensitivity and Halo Effects After Steroid Eye Drops: What to Know


Essential Eye Care: Regular Checkups and Important Tests for Vision Health

Regular Eye Examinations & Eye Care Knowledge Hello, I have been nearsighted for the past five years, with my prescription ranging from -3.50 to -5.00 diopters, and I also have astigmatism (50, 100) and floaters. In my daily life, I can drive, read, and use electronic devices...


Dr. Gao Pilin Reply:
Hello: Question 1: Regarding your vision condition, it is recommended that you have an eye examination annually, which includes a refraction test and a fundus examination. Additionally, glaucoma and cataract screenings will be conducted during the visit, and you can discuss wit...

[Read More] Essential Eye Care: Regular Checkups and Important Tests for Vision Health


Seeing Rainbow Halos: Is It a Sign of Glaucoma?

Rainbow halos around the eyes? Hello, Doctor Gao: I have elevated intraocular pressure (21, 22) and have optic nerve cupping (previous visual field tests were normal), so I have been worried about the possibility of glaucoma. At night, I tend to stare at lights because I read onl...


Dr. Gao Pilin Reply:
Hello: Rainbow halos may be one of the symptoms of certain eye conditions, including glaucoma. However, the symptoms of glaucoma typically include more than just seeing rainbow halos. Glaucoma is often accompanied by elevated intraocular pressure, blurred vision, eye pain, rednes...

[Read More] Seeing Rainbow Halos: Is It a Sign of Glaucoma?


Post-Cataract Surgery: Addressing Vision Issues and Concerns

Post-cataract surgery I recently had surgery on my right eye, and the doctor said my vision is 1.0. I received an Alcon non-diffractive presbyopia-correcting intraocular lens, but three weeks later, I still cannot see clearly at intermediate distances. My first question is whethe...


Dr. Gao Pilin Reply:
Hello: 1. Regarding your difficulty seeing at intermediate distances after surgery on your right eye, there are several possibilities. First, it may take some time to adapt to the new intraocular lens. Additionally, you may need to wear appropriate glasses post-surgery to ensure ...

[Read More] Post-Cataract Surgery: Addressing Vision Issues and Concerns


Do You Need New Glasses for Increased Myopia and Astigmatism?

If there is an increase in prescription strength and astigmatism, is it necessary to get new glasses? Hello Doctor: I would like to inquire about my current vision measurements. My right eye is -3.00 diopters and my left eye is -2.25 diopters, with astigmatism of -0.75 in both ey...


Dr. Gao Pilin Reply:
Hello: Based on the changes in your prescription, your right eye's myopia has increased from -2.75 to -3.00, while your left eye has increased from -1.75 to -2.25. The astigmatism in your right eye remains at -0.75, while the left eye has increased from -0.50 to -0.75. Such ...

[Read More] Do You Need New Glasses for Increased Myopia and Astigmatism?


Understanding Rainbow Halos Around Lights: Causes and Concerns

Appearance of rainbow halos around the eyes? Hello Doctor: I have myopia of -7.00 in my left eye and over -9.00, close to -10.00 in my right eye. Recently, I suddenly noticed that when wearing glasses, there is a rainbow halo appearing at the upper edge of the right lens when loo...


Dr. Cai Wenyuan Reply:
Observe the symptoms, and if they persist, seek medical evaluation.

[Read More] Understanding Rainbow Halos Around Lights: Causes and Concerns


Could Your Eye Symptoms Indicate Glaucoma?

Is it glaucoma? I noticed that when riding my bike tonight, I see halos around lights in my right eye (if the light is red, the halo is only red; if it's yellow, the halo is only yellow). However, when I wear my glasses, everything appears normal. Could this be glaucoma? My ...


Dr. Gao Pilin Reply:
Hello: Seeing halos around lights does not necessarily indicate glaucoma. Halos may occur because the eyes are unable to focus light correctly, which could be due to irregularities in the shape of the eyeball, refractive errors, corneal issues, or lens problems. Since you mention...

[Read More] Could Your Eye Symptoms Indicate Glaucoma?


Seeing Rainbow Halos Around Lights: Should You Be Concerned?

Seeing a halo of rainbow colors around the light? I recently noticed that when I look at lights at night, there is a rainbow halo around them. At home, the lights only have a halo, but when I look at streetlights outside, there is a complete rainbow circle. I'm worried that ...


Dr. Gao Pilin Reply:
Hello: Sometimes it is caused by corneal edema or discharge. Of course, elevated intraocular pressure can also lead to this phenomenon. It would be a good idea to schedule an examination.

[Read More] Seeing Rainbow Halos Around Lights: Should You Be Concerned?


Seeing Colorful Halos Around Lights at Night: Is It Glaucoma?

Seeing colored halos around streetlights at night? Hello Doctor: One night last week, while looking at an LED streetlight, I suddenly saw a ring of colorful halos around it. When I looked at the traffic lights, the halos around the red and green lights also appeared particularly ...


Dr. Gao Pilin Reply:
Hello Miao: There are many reasons that can cause halos. The halos you are referring to are likely related to the phenomenon of dispersion, which typically occurs when the corneal hydration level increases. A common condition associated with this phenomenon is acute glaucoma. How...

[Read More] Seeing Colorful Halos Around Lights at Night: Is It Glaucoma?


Seeing Rainbow Halos Around Lights After Dilation: Is It Normal?

After dilation, seeing halos around streetlights? Hello, doctor. I have high myopia (left eye -1050, right eye -1200) and floaters. Due to the combination of high myopia and floaters, I regularly undergo retinal examinations. In the past two weeks, I have had two dilated eye exam...


Dr. He Jianxian Reply:
It is possible to experience this phenomenon after dilation; there is no need to worry as long as it resolves once the pupils return to normal. Dr. Ho Chien-Hsien, Ophthalmology Department, Nantou Hospital.

[Read More] Seeing Rainbow Halos Around Lights After Dilation: Is It Normal?


Understanding Rainbow Halos in Glaucoma Patients: Is It Normal?

Glaucoma ring Hello, doctor. I would like to ask if it is normal to see rainbow halos around lights (specifically, the nearest white streetlight in a row of streetlights) at night while using prescribed glaucoma eye drops, even though my intraocular pressure is within the control...


Dr. Liang Ce Reply:
It is recommended that you discuss the above situation with your attending physician to determine if further examinations are necessary. Thank you, and wishing you good health!

[Read More] Understanding Rainbow Halos in Glaucoma Patients: Is It Normal?


Persistent Eye Pressure and Blurred Vision: Seeking Answers After Multiple Exams

Elevated intraocular pressure with blurred vision, but after six visits to the ophthalmologist, it has been deemed normal? Hello, doctor. I have high myopia (over 600 degrees in both eyes). In May 2021, I started experiencing frequent eye fatigue, floaters, and blurred vision. I ...


Dr. Liang Ce Reply:
It is recommended that you discuss the above situation with your attending physician to determine if further examinations are necessary. Thank you, and wishing you good health!

[Read More] Persistent Eye Pressure and Blurred Vision: Seeking Answers After Multiple Exams


Seeing Colored Halos Around Lights: Is It Astigmatism or Glaucoma?

The bulb has color on the outside? I have a prescription of -4.75 for my left eye and -4.50 for my right eye. Recently, when I look at a light bulb, I notice that there are red and blue halos around the outer edge of the bulb. This halo refers to the outermost ring of the bulb, b...


Dr. He Jianxian Reply:
It may be related to the lenses you are wearing; some lenses have a higher degree of dispersion, which could be the reason. This is provided for your reference. Dr. Ho Chien-Hsien, Ophthalmology Department, Nantou Hospital.

[Read More] Seeing Colored Halos Around Lights: Is It Astigmatism or Glaucoma?


Understanding Vitreous Degeneration: Symptoms and Concerns Explained

Vitreous degeneration 1. I see dark shadows in the corners of my eyes, but they disappear when I don't look. I'm not sure if this is related to floaters. What could this condition indicate? 2. When I strain my eyes or slightly close them, the floaters seem to increase...


Dr. Gao Pilin Reply:
Hello Mr. Chiu: This should be various phenomena associated with floaters. It's good that the retinal examination showed no issues, as floaters are located in the vitreous body. Seeing halos around lights at night is most commonly due to astigmatism or some degree of refract...

[Read More] Understanding Vitreous Degeneration: Symptoms and Concerns Explained


Understanding Rainbow Vision in Glaucoma: Symptoms and Concerns

The symptoms of glaucoma-related halos include the perception of colored rings or halos around lights, particularly at night or in low-light conditions. This phenomenon occurs due to increased intraocular pressure affecting the cornea and lens, Hello Doctor: I would like to ask i...


Dr. Gao Pilin Reply:
Hello, you may experience halos around lights, but this does not necessarily indicate glaucoma. Strong light can cause a white halo and a rainbow effect, which may sometimes be related to refractive issues in the eyes. To determine if you have glaucoma, it is essential to undergo...

[Read More] Understanding Rainbow Vision in Glaucoma: Symptoms and Concerns


Understanding Light Halos Around Lights: Eye Health Insights

Light and the Eyes Hello Doctor: While walking at night, I occasionally notice a halo of light surrounding certain streetlights (the color of the halo varies depending on the color of the light). I recently had my intraocular pressure measured, and it was normal; my cornea is not...


Dr. Gao Pilin Reply:
Hello, those who are afraid: As long as there is a refractive error in the eyes, seeing lights will create a halo effect, which is different from the halos associated with glaucoma. Please rest assured. The Ophthalmology Department of Puzi Hospital in Taiwan: Open Monday, Tuesday...

[Read More] Understanding Light Halos Around Lights: Eye Health Insights


Understanding Glaucoma: Is Your Rainbow Vision a Cause for Concern?

Glaucoma issues Hello Doctor: When I wear glasses and look at some white light bulbs, I notice that the straight light rays appear to have colors. However, when I take off my glasses, there are no colors. The phenomenon of halos seems to refer to a rainbow-colored halo surroundin...


Dr. Gao Pilin Reply:
Hello, for those who are anxious and unable to sleep: Have you taken off your glasses? If you see better with them on, it indicates that the glasses are the cause. So, it's not a case of halos, so please don't worry. Sometimes glaucoma can cause halos, but it doesn'...

[Read More] Understanding Glaucoma: Is Your Rainbow Vision a Cause for Concern?


Understanding Light Distortion and Double Vision with Glasses

Eyeglass issues? 1. The symptoms you are experiencing, such as seeing blue and yellow halos around lights, particularly when wearing glasses, could be indicative of several eye conditions. These may include astigmatism, which can cause light distortion, or issues related to the l...


Dr. Gao Pilin Reply:
Hello: The blue and yellow halos at the edges are due to the prism effect of the lenses, causing dispersion. This phenomenon is more pronounced in thicker lenses. The greater the angle at which you view the eyeglass lenses, the more severe the diplopia, which is also due to this ...

[Read More] Understanding Light Distortion and Double Vision with Glasses


Understanding Red Veins in Your Eyes: Causes and Concerns

Bloodshot eyes? Recently, I noticed many small blood vessels in my eyes upon waking up. The sclera itself is white, but I can see the blood vessels, and there seems to be a reddish blood clot around the edge of the pupil that has been present for some time. I do spend a lot of ti...


Dr. Liang Ce Reply:
It is recommended that you visit an ophthalmology clinic to see if any relevant examinations are needed. Thank you, and wishing you good health!

[Read More] Understanding Red Veins in Your Eyes: Causes and Concerns


Understanding Eye Symptoms: When to Seek Help for Vision Issues

Eye problems Hello, Doctor. 1. Last night, while looking at my phone in a dark place, I saw what looked like fine raindrops falling. I have experienced this before (occasionally a single drop), but this time it was more continuous (though not as heavy as a downpour). After rest...


Dr. Gao Pilin Reply:
Hello: 1. If it disappears, it is likely a type of photopsia, which should not be a concern. 2. Seeing rainbow halos indicates corneal edema, which may occur due to prolonged wear time; it is advisable to shorten the wearing duration to prevent corneal hypoxia. 3. (1) It could be...

[Read More] Understanding Eye Symptoms: When to Seek Help for Vision Issues


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