Halos around lights, Ophthalmology FAQ

Understanding High Eye Pressure and Its Connection to Visual Disturbances

Elevated intraocular pressure with halos? Hello, doctor. Last month, I noticed that I have persistent halos around lights, both day and night. I went to the medical school, and the doctor said my intraocular pressure exceeded the critical point but did not specify the exact value...

Dr. Gao Pilin Reply:
Hello, Xiao Neng: A visual field test is necessary to assess whether there is any optic nerve damage. However, it is advisable to lower the intraocular pressure slightly; I recommend starting medication and following your physician's instructions for examination. The ophthal...

Understanding Rainbow Vision: Is It Normal or a Sign of Glaucoma?

Could you please provide more context or specify your question? I would like to ask the doctor: I have a refractive error of -4.50 diopters in both eyes, with approximately -1.00 diopter of astigmatism in each eye. When I wake up in the morning, I see rainbow halos around lights,...

Dr. Gao Pilin Reply:
Hello XXX: 1. It is possible that the cornea is causing this issue; pressure during sleep may have led to some deformation, resulting in the appearance of halos. 2. Glaucoma could potentially cause such symptoms, but it would not resolve in just a few minutes, so it is likely ...

Understanding Optic Nerve Cupping: Signs, Risks, and Eye Care Tips

Optic nerve and cupping issues? Dear Dr. Gao/Director, Happy Lunar New Year! I am currently abroad and today I went to an ophthalmologist for a routine vision health check. My visual acuity was measured (it hasn't worsened compared to last year), and my intraocular pressur...

Dr. Gao Pilin Reply:
Hello, Big Eyes: 1. Disc cupping refers to the excavation of the optic nerve head. When the optic disc is affected by intraocular pressure, it may initially lead to an increase in the cupping of the optic nerve head. Therefore, an increase in disc cupping can be considered an in...

Concerns About Vision Loss: Managing High Myopia and Eye Health

Worried about going blind? I am severely myopic (both eyes close to 1000 degrees). In recent years, I have been paying close attention to my eyes while studying, having regular check-ups every three to six months to monitor my retina at an ophthalmology clinic. Fortunately, the d...

Dr. He Jianxian Reply:
Hello: Basically, you have been undergoing regular check-ups, so there is no need to worry too much. Your work will not cause blindness, and you can feel reassured. Wishing you good health.

Understanding Glaucoma: What Do Rainbow Halos Around Lights Mean?

Glaucoma halos The halos seen in glaucoma can appear as rainbow-colored rings around lights. If you are experiencing severe eye pain accompanied by nausea and seeing halos around streetlights, it is important to seek medical attention promptly, as these could be symptoms of acute...

Dr. Zhuang Yamin Reply:
Dear "Handsome," Hello! The halos seen in glaucoma are very similar to what you described. Due to elevated intraocular pressure leading to corneal edema, you may see a ring of light around light sources. Additionally, the symptom of "eye pain so severe it makes y...

Glaucoma or Migraine? Understanding Eye Health Concerns

Is it glaucoma or a migraine? Hello Doctor: My girlfriend fainted due to severe headaches about three to four years ago and was hospitalized at National Taiwan University Hospital for examination. Eventually, a neurologist diagnosed her with basilar-type migraine. After being dis...

Dr. Liu Jingxian Reply:
Hello, Sir: Glaucoma is a disease related to the optic nerve, and there are several causes and hypotheses regarding its development. The two most commonly discussed types are: one caused by elevated intraocular pressure leading to mechanical damage to the optic nerve, and the oth...

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