Understanding Small Black Spots on the Eyelid: Causes and Concerns
There are four small bumps inside my upper eyelid? Today, while removing my makeup, I felt like there was something in my eye, but I couldn't find the object. Later, I discovered four small black spots on my upper left eyelid, surrounded by white. I initially thought it was ...
Dr. Feng Jiefan Reply:
Hello: The eyelid contains conjunctival and skin tissue, and the presence of black spots may indicate a foreign body, black pigment deposition, or a mole. Generally, a foreign body can cause an inflammatory reaction, leading to discomfort or redness and swelling in the eye, while...[Read More] Understanding Small Black Spots on the Eyelid: Causes and Concerns
Choosing the Right Contact Lenses: Low vs. High Water Content
Contact lenses I recently bought a new pair of contact lenses, but I feel a warm sensation when wearing them. What could be the reason for this? When wearing contact lenses, I experience some dryness, redness, or an unusual feeling, especially after wearing them for a long time. ...
Dr. Zhang Yanrui Reply:
Hello: Experiencing a burning sensation while wearing contact lenses may indicate an allergic reaction to the solution or the lens material. It is advisable to consult an ophthalmologist to assess the severity of the allergy. High water content lenses have better oxygen permeabil...[Read More] Choosing the Right Contact Lenses: Low vs. High Water Content
Persistent Red Eyes: Causes, Treatments, and Solutions Explained
The eyes are very red? Hello Dr. Feng, I have been experiencing persistent redness in my eyes for about five years, which is quite severe. My eyes are red all day, regardless of the time. I have visited dozens of hospitals and clinics, and the diagnoses have all been either kera...
Dr. Feng Jiefan Reply:
Hello: Red eyes can be a symptom caused by various conditions, such as iritis, conjunctivitis, and keratitis. However, you did not mention experiencing any discomfort associated with the redness, making it difficult to determine the underlying cause. Vasoconstrictors can temporar...[Read More] Persistent Red Eyes: Causes, Treatments, and Solutions Explained
Essential Tips for Wearing Rigid Gas Permeable Contact Lenses
Regarding the use of rigid gas permeable (RGP) contact lenses..? Hello Dr. Feng, I am a wearer of rigid gas permeable contact lenses. May I ask if it is okay to rinse the lenses with regular tap water before wearing them? Or can I use saline solution? (I recall that saline solu...
Dr. Feng Jiefan Reply:
Hello: Hard contact lenses should not be rinsed with tap water, as it may contain amoebic protozoa and other pathogens that can cause corneal ulcers. Saline solution can be used to rinse the lenses, but it is prone to contamination and may carry viruses. Using a preservative solu...[Read More] Essential Tips for Wearing Rigid Gas Permeable Contact Lenses
Dealing with Discomfort: Issues with Contact Lens Wear
Issues with Wearing Contact Lenses Dear Dr. Chang, I wear rigid gas permeable contact lenses, but every time I put them on, my eyes often feel itchy. Initially, my vision becomes blurry with each blink, and then it clears up. I usually apply lubricating eye drops, but they only ...
Dr. Zhang Yanrui Reply:
Rigid gas permeable (RGP) contact lenses can shift slightly after blinking, which may cause a few seconds of blurred vision. This movement facilitates tear exchange and allows for better oxygen permeability, which is one reason why RGP lenses have a higher oxygen transmissibility...[Read More] Dealing with Discomfort: Issues with Contact Lens Wear
Understanding Astigmatism and Myopia: Do You Need Toric Lenses?
Astigmatism and myopia? Hello Doctor: I am nearing my age with myopia of R875-150 and L650-125. Is it possible that my condition will not worsen? Also, can I wear contact lenses without astigmatism correction? The optical shop said that wearing the full prescription is sufficient...
Dr. Zhang Yanrui Reply:
If you are over the age of 25, your vision will not worsen unless there are other eye conditions, such as cataracts or degenerative myopia. Generally, standard non-toric soft contact lenses can correct astigmatism of less than one diopter, while rigid gas permeable lenses can cor...[Read More] Understanding Astigmatism and Myopia: Do You Need Toric Lenses?
Are Contact Lens Trials Safe? Risks of Infection and Hygiene Concerns
excuse me? Hello Doctor: Today I went to an optical store to try on contact lenses. After trying them on, I noticed that the staff put the trial lenses back into the case and only soaked them in saline solution before storing them. It felt very unsanitary (I really regret it), an...
Dr. Ke Meilan Reply:
Hello, many bacterial infections are transmitted through contact, and a ruptured blood vessel does not cause transmission. Infections through bodily fluids or blood also require a wound or mucous membrane to invade. Next time you have a test, you should ask the staff to wash the ...[Read More] Are Contact Lens Trials Safe? Risks of Infection and Hygiene Concerns
Understanding Red Veins in the Eye: Causes and Solutions
There are blood vessels in the eyes? Hello, doctor! I have worn contact lenses about five times in the past three weeks. However, in the last week or two, I have been hesitant to wear them again. I have noticed a red line of blood vessels on the sclera of my left eye, extending f...
Dr. Feng Jiefan Reply:
Hello: Contact lenses can cause corneal hypoxia and recurrent corneal neovascularization; however, these blood vessels are very small and not easily visible to the naked eye, and they typically develop with prolonged wear. The blood vessels on the white blood cells are likely due...[Read More] Understanding Red Veins in the Eye: Causes and Solutions
Can You Wear Colored Contact Lenses After LASIK Surgery?
Can I wear colored contact lenses after LASIK surgery? Hello Dr. Tsai: I underwent laser surgery three years ago, and my condition is currently good. Is my cornea more fragile than that of an average person? Am I able to wear non-prescription colored contact lenses? If I can wear...
Dr. Cai Jingyao Reply:
After laser surgery, changes in corneal curvature may make it less suitable to wear standard contact lenses with colored tints, as they may not accommodate the alterations in the cornea post-surgery.[Read More] Can You Wear Colored Contact Lenses After LASIK Surgery?
Understanding Amblyopia and Corneal Damage: A 20-Year-Old's Vision Dilemma
Amblyopia or corneal damage? My brother is 20 years old and recently discovered that he has blurred vision in his right eye. He used to wear disposable contact lenses but wore them incorrectly, often leaving them in until his eyes felt uncomfortable, which could have lasted over ...
Dr. Ke Meilan Reply:
Hello: First, is your information absolutely accurate? Do you have any past ophthalmology records? Please have your brother visit the ophthalmology department at Zhu Medical Center for further discussion. Sincerely, Dr. Mei-Lan Ke, Head of Ophthalmology.[Read More] Understanding Amblyopia and Corneal Damage: A 20-Year-Old's Vision Dilemma
Understanding Eye Flashes and Floaters: When to Seek Help
Occasional flashes of light in the eyes? Hello, doctor. Since I was young, I have noticed some gray strands floating in my right eye (possibly floaters). Later, I developed myopia, which is now around -800 diopters (with over -100 diopters of astigmatism). The symptoms persist, a...
Dr. Zhang Yanrui Reply:
Actually, if there is a detailed examination after dilation, it is not necessarily required to change doctors. However, if there are "lightning" type visual disturbances, it may be necessary to have follow-up appointments every one to two weeks, as this indicates that t...[Read More] Understanding Eye Flashes and Floaters: When to Seek Help
Understanding Mydriatics and Contact Lens Use in Eye Care
Pupil Dilation Agents and Contact Lenses Hello Dr. Chang: I would like to ask at what age the effects of mydriatic agents typically diminish? Additionally, for someone who has worn contact lenses for an extended period of over 3 to 4 years, will they have difficulty adjusting to ...
Dr. Zhang Yanrui Reply:
Pupil-dilating eye drops are generally used until puberty, but if myopia continues to worsen, it may be necessary to use them into the twenties, with significant individual variation. When wearing contact lenses, there is no issue with pupillary distance, so it may take a few day...[Read More] Understanding Mydriatics and Contact Lens Use in Eye Care
Understanding Blurry Vision: Causes and Solutions for Eye Health
Blurred vision On my way to work, everything was fine while I was driving, but as I walked into the office, I started to notice that my vision became increasingly hazy. I initially thought it was due to dirty contact lenses, but after I took off my glasses, I was surprised to fin...
Dr. Cai Jingyao Reply:
Your issue seems to resemble corneal edema, which may be caused by wearing contact lenses. It would be safer to consult an ophthalmologist.[Read More] Understanding Blurry Vision: Causes and Solutions for Eye Health
Understanding Myopia Measurements: Hard vs. Soft Contact Lenses
Measurement of Myopia Degree I would like to ask a question... Today I went to get my glasses prescription. I visited two different places, and since I wear rigid gas permeable contact lenses, the first place advised me to temporarily switch to daily disposable lenses and come ba...
Dr. Zhang Yanrui Reply:
Rigid contact lenses can affect the curvature of the cornea due to their compressive effect; however, improper use of soft contact lenses can lead to corneal edema, which also impacts the accuracy of measurements. Wearing rigid lenses is less likely to cause neovascularization be...[Read More] Understanding Myopia Measurements: Hard vs. Soft Contact Lenses
Does Wearing Contact Lenses Affect Myopia Measurement Accuracy?
Measurement of Myopia Degree Does wearing rigid gas permeable contact lenses or soft contact lenses affect the measurement of myopia? Today I visited two different places; one said that rigid lenses would affect the measurement and advised me to wear disposable lenses for a few d...
Dr. Ke Meilan Reply:
Hello: Both types of lenses can affect the prescription. Rigid gas permeable lenses have a greater impact on astigmatism, while soft lenses and the method of lens removal generally have a lesser effect on astigmatism. If irregular astigmatism is detected, it is necessary to stop ...[Read More] Does Wearing Contact Lenses Affect Myopia Measurement Accuracy?
Can You Ever Wear Contact Lenses Again After Corneal Injury?
Is it true that once a corneal abrasion has healed, one can never wear contact lenses again for life? Hello Dr. Ke, I have a patient with amblyopia in both eyes who has been wearing contact lenses for about 20 years. However, two months ago, while riding a bike, a sand particle ...
Dr. Ke Meilan Reply:
Hello: 1. It is possible that wearing contact lenses for an extended period has affected the health of your epithelial cells. It is advisable to take a break from wearing them for a while before resuming. 2. Whether you can wear them for life depends on the condition of your corn...[Read More] Can You Ever Wear Contact Lenses Again After Corneal Injury?
Can I Wear Contact Lenses or Get LASIK After Eye Microvascular Issues?
Microvessels of the eye I previously experienced a rupture of the microvessels in my eye, which caused temporary blindness. It later resolved as the blood clot was absorbed on its own (it seems to be due to the microvessels being too small). I would like to inquire if I can wear ...
Dr. Ke Meilan Reply:
Hello~ The previous message was not clear enough for me to explain. When we refer to microvascular rupture in the eyes, we mean either conjunctival vessels or retinal vessels. If it is the conjunctival vessels, there should not be any temporary vision loss. Is it truly temporary ...[Read More] Can I Wear Contact Lenses or Get LASIK After Eye Microvascular Issues?
Considering LASIK for Myopia: Key Questions and Considerations
I want to undergo laser surgery for my myopia? Hello Doctor: I am very interested in undergoing laser surgery for my myopia, but I would like to ask: 1. Can I undergo surgery if I have myopia of 600 degrees and astigmatism? 2. Will there be any impact on future pregnancies and ch...
Dr. Ke Meilan Reply:
Hello: 1. A comprehensive examination is required; it is not just a matter of prescription. 2. It should not be a problem. 3. You can check the website for more information. 4. Please refrain from wearing contact lenses for more than two weeks. Sincerely, Dr. Komeilan, Ophthalmol...[Read More] Considering LASIK for Myopia: Key Questions and Considerations
Non-Surgical Solutions for Correcting Myopia: Can Glasses Be Avoided?
Issues related to myopia correction? Hello Doctor: My eyesight is -2.50 diopters in both eyes, and this degree has not changed for 4 to 5 years. I would like to ask if there are any non-surgical methods to reduce my myopia to a normal level or achieve significant improvement so t...
Dr. Wang Zhangji Reply:
Hello: There is a non-surgical method called orthokeratology, which uses special contact lenses to reduce refractive error. However, this method requires continuous use to maintain the reduced prescription; if interrupted, the eyes will revert to their original prescription. Sinc...[Read More] Non-Surgical Solutions for Correcting Myopia: Can Glasses Be Avoided?
Can Contact Lens Solution Replace Saline for Eye Care?
Can contact lens cleaning solution be used as a substitute for saline solution? Hello Doctor: I live abroad, but in recent years, multi-purpose contact lens solutions have become popular. In the city where I live, I can't find saline solution anymore, and the store staff tol...
Dr. Cai Jingyao Reply:
Hello Doctor: I live abroad, but in recent years, multi-purpose contact lens solutions have become popular. In my city, I can't find saline solution anymore, and the store staff told me that no one uses saline solution to rinse contact lenses anymore; one bottle of contact l...[Read More] Can Contact Lens Solution Replace Saline for Eye Care?