Can You Use Artificial Tears with Eye Drops? Dry Eye Concerns Explained
Can artificial tears be used when instilling eye drops? And other dry eye issues? I have been feeling that my eyes are getting drier lately. I visited an ophthalmologist three times, but they couldn't diagnose me with dry eye syndrome. It wasn't until I went to Changhua...
Dr. Zhang Yuhua reply Ophthalmology
Hello: When adding eye drops, it is essential to wait at least five minutes between applications and to use them under the guidance of the prescribing physician. There are many treatments for dry eye syndrome; please do not self-diagnose or purchase medication to avoid potential ...[Read More] Can You Use Artificial Tears with Eye Drops? Dry Eye Concerns Explained
Troubles with Contact Lenses: Seeking Advice for Discomfort and Dizziness
Contact lens issues - I'm abroad, please help me. Thank you! I normally wear glasses with a prescription of over -800 and astigmatism of around -200. Due to an incident while swimming, I lost my glasses, so I temporarily started wearing my friend's disposable contact le...
Dr. Zhang Yuhua reply Ophthalmology
Wearing improperly fitted contact lenses can lead to various issues. If the curvature is incorrect, or if the lenses are too tight or too loose, it can cause corneal hypoxia or a foreign body sensation. Dry eye conditions can also result in similar symptoms. It is advisable to un...[Read More] Troubles with Contact Lenses: Seeking Advice for Discomfort and Dizziness
Can High Myopia and Astigmatism Qualify for Mild Disability Certification?
Mild disability If a person has myopia and astigmatism of approximately 1000 degrees, does this qualify for applying for a mild disability certificate?
Dr. Zhang Yuhua reply Ophthalmology
Hello: The degree of refractive error and visual acuity are not entirely linearly related, so there is no absolute correlation between the degree of refractive error and disability.[Read More] Can High Myopia and Astigmatism Qualify for Mild Disability Certification?
Understanding the Impact of Dilating Drops on Vision Measurements
Issues with Mydriatic Agents Hello, doctor. I would like to ask about the use of dilating drops during an eye examination. They are used to more accurately determine the degree of myopia. I would like to understand what the typical difference in prescription might be before and a...
Dr. Zhang Yuhua reply Ophthalmology
Hello: The function of mydriatics is to eliminate pseudomyopia, and the degree of reduction varies from person to person. After instillation, due to the paralysis of the ciliary muscle, the ability to adjust focus is impaired, so even if the refractive error is reduced, vision ma...[Read More] Understanding the Impact of Dilating Drops on Vision Measurements
White Bump Under Eye: When to See an Eye or Skin Specialist?
There is a white spot under the eyelid? Hello, two weeks ago a small white bump appeared on my right lower eyelid. Initially, I thought it was similar to a pimple and would disappear on its own, but it still persists. I'm unsure whether I should consult an ophthalmologist or...
Dr. Zhang Yuhua reply Ophthalmology
Hello, Xiaoyanzi: My suggestion is to see an ophthalmologist, as there is a small independent lesion that is very close to the eye. It would be more appropriate for an eye specialist to handle it. What do you think?[Read More] White Bump Under Eye: When to See an Eye or Skin Specialist?
Effective Eye Care Tips for Redness and Discomfort
How to maintain health? Hello, doctor. I have red bloodshot eyes (it's been about 10 years) that become even redder after showering or just waking up. My eyes also appear yellow (I've heard from others that this might indicate liver issues). How can I improve and take c...
Dr. Zhang Yuhua reply Ophthalmology
Dear netizens: Red eyes may indicate conditions such as conjunctivitis, uveitis, or glaucoma. Yellowing of the eyes could be a sign of jaundice or conjunctival degeneration, among other issues. Some of these conditions may resolve on their own, while others require treatment. It ...[Read More] Effective Eye Care Tips for Redness and Discomfort
Understanding Retina Exams for High Myopia: What to Expect
Question Hello Doctor: I have high myopia and need to have regular retinal examinations. Since I have never had this examination before, I would like to know how it is performed. Thank you.
Dr. Zhang Yuhua reply Ophthalmology
Dear netizens: High myopia often leads to retinal diseases, and in severe cases, it can even cause retinal detachment. Therefore, ophthalmologists frequently recommend that patients undergo a fundus examination every six months to a year. The examination process involves the appl...[Read More] Understanding Retina Exams for High Myopia: What to Expect
Does Lack of Sleep Affect Eye Exam Results and Eye Pressure?
May I ask the doctor? If you don't sleep all night before an eye exam, will your vision prescription be more severe and lead to inaccurate results? Will your intraocular pressure also increase?
Dr. Zhang Yuhua reply Ophthalmology
Dear Jacky, Poor sleep can lead to inaccurate vision measurements or elevated intraocular pressure. Although there are no formal statistical reports or confirmed error values, clinical observations have shown that insufficient sleep the previous night can result in a slight incr...[Read More] Does Lack of Sleep Affect Eye Exam Results and Eye Pressure?
Understanding Misaligned Pupils in Newborns: Impact on Vision
Abnormal pupillary alignment in newborns? The child is otherwise normal, but the eyes in the photos appear a bit unusual. A pediatric check-up confirmed that there is a misalignment of the pupils. I would like to know if this will affect vision or if it is just a common developme...
Dr. Zhang Yuhua reply Ophthalmology
Dear Ms. Cheng, Newborns may exhibit misalignment of the eyes due to the incomplete development of their ocular muscle coordination. However, it is also possible that this could be a sign of strabismus or heterotropia. It is best to have an examination by a specialized ophthalmo...[Read More] Understanding Misaligned Pupils in Newborns: Impact on Vision
Understanding Abnormal Eye Symptoms in High Myopia Patients
Ocular abnormalities Hello Dr. Chang: I am a patient with high myopia. In the past month or two, I have noticed an abnormal condition in my right eye. Now, when I look at things with my right eye, I see irregularly shaped translucent objects (sometimes they even appear bright). I...
Dr. Zhang Yuhua reply Ophthalmology
Dear online friend, It is difficult to speculate on potential conditions without actually seeing the patient. You may be experiencing vitreous degeneration or a hematological disorder (though at your young age, this is unlikely!). Retinal issues are certainly a possibility as we...[Read More] Understanding Abnormal Eye Symptoms in High Myopia Patients
Understanding Retinal Issues: Insights on Degeneration and Treatment Options
Retinal issues Hello Dr. Chang: I previously underwent a dilated fundus examination, and the doctor mentioned signs of retinal degeneration, stating that this phenomenon is quite common. I then went to Chang Gung Memorial Hospital to see a retinal specialist, who said everything ...
Dr. Zhang Yuhua reply Ophthalmology
Dear netizens; since you have already consulted two ophthalmologists and both found no issues, try not to worry too much. Generally, patients with high myopia often experience peripheral retinal degeneration and vitreous degeneration. It is possible that you are experiencing phys...[Read More] Understanding Retinal Issues: Insights on Degeneration and Treatment Options
Understanding Myopia: Converting Diopter Measurements Explained
Myopia degree Hello! I would like to ask, if my myopia is over 0.2 diopters, how does that translate to the common measurement of myopia in diopters? If I exceed 600 diopters, is that considered above or below 0.2? Thank you!
Dr. Zhang Yuhua reply Ophthalmology
Dear Xiao Wei, Basically, the degree of myopia is not directly proportional to visual acuity. In other words, having a prescription of -500 diopters does not necessarily mean one will see 0.1, and -600 diopters does not guarantee seeing 0.1 either. Visual performance depends not...[Read More] Understanding Myopia: Converting Diopter Measurements Explained
Understanding Light Sensitivity: Causes and Solutions for Eye Discomfort
My eyes are sensitive to light? I have light sensitivity in my eyes, which makes it difficult for me to maintain eye contact when chatting with others. I visited the hospital last time, but since my eyes are small and I blink a lot, they only measured my vision, which was fine (6...
Dr. Zhang Yuhua reply Ophthalmology
Dear online friend, Photophobia can commonly be caused by corneal issues (such as keratitis or corneal injury) and anterior uveitis. Less common causes include conjunctivitis, posterior uveitis, albinism, achromatopsia, and aniridia. If you have previously undergone an examinat...[Read More] Understanding Light Sensitivity: Causes and Solutions for Eye Discomfort