Eye Symptoms: When to Seek Medical Attention

Eye problems

Hello, doctor.
I would like to ask a few questions.

1.
For the past few days, I've noticed that when I open or close my eyes, I seem to see a faint rainbow (not very clear, but it feels like it’s there, wherever I look).
Is this normal?
2.
A few days ago, I sometimes felt a red light in my environment, possibly due to lighting, reflections, or fatigue.
Recently, I've been feeling a green light as well.
Both sensations are not clearly seeing light but rather a subtle feeling.
Is this due to being overly sensitive or an illusion, or could there be an underlying issue?
3.
Is it only acute glaucoma that causes halos around lights, while chronic glaucoma may not show symptoms in the early stages? Additionally, I tested by looking at the yellow light in my room several times (the result was negative); could this harm my eyes? After looking, I noticed an afterimage that was complementary blue-green, but later I felt it was red.
Is that normal?
3.
(1) I noticed my peripheral vision seemed to twist noticeably for a moment; is that okay? (2) I would like to know under what circumstances the appearance of floaters and flashes requires medical attention, as I occasionally see a small flash (both in light and dark) or experience brief movements.
How can I accurately assess this?
4.
If I experience brief eye pain, what level of pain would necessitate seeing a doctor? I apologize for being particularly sensitive about my eye condition lately, and it’s inconvenient for me to visit a hospital for an examination.
I hope you can help clarify my concerns.
Thank you very much!

Ni, 20~29 year old female. Ask Date: 2020/03/01

Dr. Gao Pilin reply Ophthalmology

Hello,
1.
Over the past few days, I have noticed that when I open and close my eyes, it seems like I can see a rainbow (though it's not very clear and I'm not completely sure, but it feels like it appears wherever I look).
Is this normal? Generally, this is normal and may be related to photopsia, which is associated with floaters.
2.
A few days ago, I sometimes felt like there was a red light in my environment, possibly due to lighting, reflections, or fatigue? Recently, I have also felt a green light.
Both sensations are not clearly seeing light but rather a faint feeling.
Is this due to being overly sensitive or an illusion, or is there a problem? Sometimes, this can be a response from neural activity that hasn't ceased, while other times it can be normal visual phenomena.
3.
Is it true that only acute glaucoma shows halos around lights, while chronic glaucoma may not have any symptoms in its early stages? Halos usually occur when intraocular pressure is elevated; if it's only slightly elevated, there may be no symptoms.
Additionally, I looked at the yellow light in my room several times to test (the result was negative); could this harm my eyes? The intensity of the light should not cause harm.
After looking, the afterimage was indeed a complementary blue-green color, but later I felt it was red.
Is this normal? This should be a normal phenomenon.
4.
(1) I noticed that my peripheral vision seemed to twist noticeably for a moment; is this okay? (2) I would like to know under what circumstances the appearance of floaters and flashes requires medical attention, as I occasionally see a small flash (both with and without light) or experience slight movements.
How can I accurately judge this? If it's just a little and hasn't changed much over time, it is likely just typical floaters.
Floaters are usually harmless, but there are no absolutes.
Therefore, a dilated eye examination should be performed once; if there are no issues, you can continue to self-monitor.
5.
If I experience a brief eye pain, what level of pain requires seeing a doctor? If it affects daily life, it is essential to get it checked.
However, any pain indicates that there is likely an issue, and no one can guarantee that there won't be any long-term effects afterward.
At the very least, an examination is necessary to determine the situation.
Taiwan E-Hospital Puzi Hospital Ophthalmology: Monday, Tuesday, Thursday, Friday from 8:00 AM to 12:00 PM; Wednesday from 2:00 PM to 4:30 PM.
Online responses can only serve as a reference; if necessary, you should visit a medical institution.
I hope to have the opportunity to serve you.
Gao Pilin

Reply Date: 2020/03/01

More Info

When it comes to understanding eye symptoms and knowing when to seek medical attention, it's essential to recognize the various signs your eyes may present and their potential implications. Let's address your questions one by one.

1. Seeing Rainbows or Color Effects: Experiencing visual phenomena such as seeing faint rainbows or color effects can be concerning. These symptoms may indicate a few possibilities, including visual disturbances related to migraines, retinal issues, or even corneal problems. While it might not be alarming in isolation, if this symptom persists or worsens, it would be wise to consult an eye care professional.

2. Perception of Red or Green Light: The perception of unusual colors, such as red or green light, can also stem from various causes. It could be due to light sensitivity, fatigue, or even reflections from surfaces. However, if these sensations are frequent or accompanied by other symptoms like headaches or visual disturbances, it is advisable to seek medical attention. Your eyes might be reacting to environmental factors, but persistent changes in vision should not be ignored.

3. Glare and Halos: Regarding halos around lights, while acute glaucoma is often associated with this symptom, chronic glaucoma can also present with similar visual disturbances, especially in its later stages. If you notice halos, especially if they are accompanied by pain, blurred vision, or headache, it is crucial to seek medical evaluation. Prolonged exposure to bright lights, such as yellow light bulbs, typically does not cause permanent damage, but it can lead to temporary discomfort or visual disturbances.

4. Visual Disturbances: If you notice your peripheral vision appearing to shift or distort, this could be a sign of a more serious condition. Sudden changes in your visual field, especially if accompanied by flashes of light or new floaters, warrant immediate medical attention. These could indicate retinal detachment or other serious ocular conditions.

5. Flashes and Floaters: The presence of floaters and flashes of light can be common, especially as one ages. However, if you experience a sudden increase in floaters, especially if they are accompanied by flashes of light or a shadow in your peripheral vision, you should seek medical attention promptly. These symptoms can indicate retinal tears or detachment, which require immediate intervention.

6. Eye Pain: Eye pain can vary in severity and duration. If you experience sharp, sudden pain, or if the pain persists, it is essential to consult a healthcare provider. Mild discomfort that resolves quickly may not be a cause for concern, but persistent or severe pain should always be evaluated.

In summary, while some visual disturbances can be benign, it is crucial to remain vigilant about changes in your vision. If you experience persistent symptoms, especially those that are new or worsening, it is advisable to seek medical attention. Regular eye examinations are essential, particularly if you have pre-existing conditions or a family history of eye diseases. Remember, early detection and intervention can significantly improve outcomes in eye health.

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