Does Wearing Plano Glasses Affect Vision in Non-Myopic Individuals?
Plano glasses Hello Dr. Lin, thank you for taking the time to respond to my question. I would like to ask another question: If a person without myopia wears plano glasses for an extended period, will their vision deteriorate? As I mentioned in my previous message, I have noticed ...
Dr. Lin Zhengyi reply Ophthalmology
Theoretically, wearing plano glasses should not affect vision in the same way as not wearing glasses, and prolonged use should not worsen vision unless the lenses are dirty or scratched. For individuals without refractive errors, wearing plano glasses is not recommended. The phen...[Read More] Does Wearing Plano Glasses Affect Vision in Non-Myopic Individuals?
Understanding Cataract Surgery: Questions and Answers for Patients
Cataract issues~~~ Hello Dr. Lin, My father has recently been experiencing some blurred vision, and we suspect he might have cataracts. I would like to ask you about cataract phacoemulsification surgery, which uses ultrasound. Will this method involve contact with the eyeball? W...
Dr. Lin Zhengyi reply Ophthalmology
1. Cataracts are a condition characterized by clouding of the lens inside the eye. There are many causes of cataracts, with age-related cataracts being the most common. As people age, the lens gradually hardens and becomes cloudy, leading to vision impairment. Currently, there is...[Read More] Understanding Cataract Surgery: Questions and Answers for Patients
Understanding Eye Pressure and Choosing the Right Glasses
Eyes and glasses? Hello Dr. Lin, I have a few questions to ask you. 1. I often feel a swelling sensation in my eyeballs right after I close my eyes to sleep, as if they are about to pop out. Could this be a sign of high intraocular pressure? If so, how should I address this iss...
Dr. Lin Zhengyi reply Ophthalmology
1. Symptoms of glaucoma include eye pain, redness, blurred vision with halos, unilateral headache, nausea, and vomiting. Additionally, some patients with early-stage glaucoma may be asymptomatic. However, eye pain does not necessarily indicate glaucoma, so it is advisable to have...[Read More] Understanding Eye Pressure and Choosing the Right Glasses
Understanding Contact Lens Water Content: High vs. Low and Orientation Differences
The water content of contact lenses and their orientation: horizontal or vertical? Hello Doctor: Recently, I noticed that my contact lens prescription seems insufficient, so I wanted to get a new pair of contact lenses. However, when I visited the optical store, the so-called &qu...
Dr. Lin Zhengyi reply Ophthalmology
1. Soft contact lenses do not move as noticeably with blinking as rigid gas permeable lenses, which prevents the tear film underneath from circulating. As a result, most of the oxygen required by the cornea must penetrate through the soft contact lenses to reach the surface of th...[Read More] Understanding Contact Lens Water Content: High vs. Low and Orientation Differences
Understanding Small Bumps on the Eyeball: When to See an Eye Doctor
I have a small bump on my upper eyelid? Hello doctor, I have noticed a small bump on the surface of my right eye. I can feel it when I touch my eyelid with my finger, but it doesn't hurt when I press on it. Is this bump concerning? Should I see an ophthalmologist? Thank you.
Dr. Lin Zhengyi reply Ophthalmology
The small painless particles on the eyeball are most commonly known as pinguecula, which are yellowish-white spots located on the conjunctiva between the upper and lower eyelids. They are usually asymptomatic and do not require treatment. However, if you can feel the particle by ...[Read More] Understanding Small Bumps on the Eyeball: When to See an Eye Doctor
Understanding Color Vision Deficiency: Solutions and Exam Considerations
About color vision deficiency? Dear Sir/Madam, I have some questions regarding color vision deficiency. I have a color vision issue and am planning to participate in related examinations. However, I am facing the challenge of the medical examination. I would like to know if ther...
Dr. Lin Zhengyi reply Ophthalmology
Eric: Some individuals with color vision deficiency can wear orange-red or red tinted glasses to enhance their ability to distinguish colors.[Read More] Understanding Color Vision Deficiency: Solutions and Exam Considerations
Understanding Amblyopia and Binocular Vision Disparity in Eye Exams
Amblyopic disparity I would like to ask... I have congenital amblyopia in my left eye, approximately 250 degrees, while my right eye has myopia, around 150 degrees. I want to know if the calculation of the visual disparity between both eyes during an eye exam involves adding the ...
Dr. Lin Zhengyi reply Ophthalmology
Do you know if your left eye is hyperopic or myopic? If it is hyperopic, it should be written as +250 diopters; if it is myopic, it should be written as -250 diopters. The right eye, which is "myopic 150 degrees," should be written as -150 diopters. If one eye is hypero...[Read More] Understanding Amblyopia and Binocular Vision Disparity in Eye Exams
Understanding Inward Growing Eyelashes: Risks, Treatments, and Insurance Coverage
Regarding inverted eyelashes? I have a severe case of trichiasis, where both my upper and lower eyelashes are growing inward. A doctor once suggested surgery, but I have been hesitant due to concerns about the risks involved. I understand that this condition can be covered by hea...
Dr. Lin Zhengyi reply Ophthalmology
The corrective surgery for ingrown eyelashes is covered by health insurance, and this procedure is performed by an ophthalmologist without the need for hospitalization.[Read More] Understanding Inward Growing Eyelashes: Risks, Treatments, and Insurance Coverage
Understanding Inward-Growing Eyelashes: Solutions and Concerns
Inwardly turned eyelashes Hello, doctor. I have been experiencing issues with eyelashes falling into my eyes and ingrown eyelashes. One of my eyes has a double eyelid while the other has a single eyelid. I previously consulted a doctor who suggested that double eyelid surgery cou...
Dr. Lin Zhengyi reply Ophthalmology
Any surgery carries a certain risk of failure. If one avoids surgery out of fear of complications but must endure the inconvenience of ingrown eyelashes for an extended period, isn't that counterproductive? It is advisable to consult multiple physicians and choose a well-exp...[Read More] Understanding Inward-Growing Eyelashes: Solutions and Concerns
Understanding Retinal Detachment: Hope for Recovery After Eye Injury
Retinal detachment Hello, Dr. Lin. It has been over four years since my car accident. Initially, the strong impact caused a fracture in the left cheekbone, which penetrated the left eye. The doctor initially told me that my eye was fine, but after nearly a month of hospitalizatio...
Dr. Lin Zhengyi reply Ophthalmology
Four years ago, a traumatic injury caused retinal detachment and optic nerve rupture. With current medical technology, there is no way to restore your vision. The anatomical structure and physiology of a frog's eye are still significantly different from that of humans, so st...[Read More] Understanding Retinal Detachment: Hope for Recovery After Eye Injury
Understanding Inward Growing Eyelashes: Causes, Symptoms, and Treatments
Inwardly turned eyelashes Hello Doctor: I am a high school sophomore, and I would like to ask you some questions. I have a problem with ingrown eyelashes that often causes itching, and my eyes frequently produce a watery discharge, which is quite bothersome. I tend to rub my eyes...
Dr. Lin Zhengyi reply Ophthalmology
Eyelash trichiasis can be broadly classified into primary and secondary types. Primary trichiasis is caused by the inversion of the hair follicle. Treatment methods vary depending on the underlying cause and the severity of the trichiasis, and a physician's examination is ne...[Read More] Understanding Inward Growing Eyelashes: Causes, Symptoms, and Treatments
Understanding Presbyopia: Adjusting Prescription Glasses and Costs
Regarding presbyopia? Hello Dr. Lin: Regarding the degree of presbyopia after experiencing light therapy, considering the possibility that the degree may continue to worsen in the future, is it advisable to prescribe a slightly stronger prescription when fitting glasses? If so, w...
Dr. Lin Zhengyi reply Ophthalmology
When the eyes focus on nearby objects, the ciliary muscles within the eye contract, causing the lens to thicken and bringing the focal point closer; this is known as the eye's accommodation function. In middle-aged and older adults, the lens gradually loses its elasticity, r...[Read More] Understanding Presbyopia: Adjusting Prescription Glasses and Costs
Understanding Visual Distraction: Causes and Solutions for Eye Focus Issues
Vision I have always had difficulty maintaining a straight line of sight; my vision tends to scatter and I cannot focus. What could be the factors behind this? Thank you.
Dr. Lin Zhengyi reply Ophthalmology
Strabismus, commonly known as squint or cross-eyed, occurs when the eyes cannot align properly to focus on the same object simultaneously. The signals for eye movement are sent from the brain through the third, fourth, and sixth cranial nerves to the extraocular muscles, which co...[Read More] Understanding Visual Distraction: Causes and Solutions for Eye Focus Issues
Understanding the Differences Between Hyperopia and Presbyopia
Hyperopia and presbyopia? Hello, doctor: Could you please explain the difference between hyperopia and presbyopia? Both conditions result in clearer vision at a distance while making near vision less clear, and both are corrected with plus lenses (sph +). What distinguishes these...
Dr. Lin Zhengyi reply Ophthalmology
1. Hyperopia is a congenital refractive error that can be corrected with plus lenses (sph+); presbyopia refers to the gradual loss of the lens's ability to accommodate due to aging in middle-aged and older adults, which worsens with age (simply put, it is due to elastic fati...[Read More] Understanding the Differences Between Hyperopia and Presbyopia
Understanding Eye Issues: Chronic vs. Acute Conjunctivitis Explained
What problems do I have with my eyes? Hello, Dr. Lin. I would like to ask about the issues with my eyes. Since the sixth grade, my eyes have been consistently filled with blood vessels. I have seen many ophthalmologists, some of whom diagnosed me with chronic conjunctivitis, othe...
Dr. Lin Zhengyi reply Ophthalmology
There are many causes for red eyes, bloodshot appearance, and discharge. In addition to the three you mentioned, there are also allergic conjunctivitis, dry eye syndrome, and trachoma, among others. It is advisable to consult a more experienced ophthalmologist for a thorough exam...[Read More] Understanding Eye Issues: Chronic vs. Acute Conjunctivitis Explained
Understanding Inward-Growing Eyelashes: Surgical Solutions and Costs
Inward-growing eyelashes Hello Dr. Lin: I have noticed that my eyelashes seem to be growing inward recently. I used to think it was due to a foreign object getting into my eye. Is there a surgical procedure available that involves stitching the eyelid slightly to allow the eyelas...
Dr. Lin Zhengyi reply Ophthalmology
Inverted eyelashes can be corrected through surgery to ensure that the eyelashes grow outward, preventing them from rubbing against the eye. This type of surgery is covered by health insurance; however, if the procedure is solely for double eyelid surgery without inverted eyelash...[Read More] Understanding Inward-Growing Eyelashes: Surgical Solutions and Costs
Insurance Coverage for Double Eyelid Surgery Due to Inward Eyelashes
Inverted eyelashes Hello Dr. Lin: I have single eyelids and my eyelashes are growing inward. I have been visiting an ophthalmology clinic for about a month, and I go to the clinic once a month to have my eyelashes removed. The doctor has suggested that I consider double eyelid su...
Dr. Lin Zhengyi reply Ophthalmology
According to the principles of health insurance coverage, corrective surgery for entropion (or trichiasis) is covered when it is not performed for cosmetic reasons. However, if the procedure is solely for double eyelid surgery without any trichiasis, it is considered a cosmetic s...[Read More] Insurance Coverage for Double Eyelid Surgery Due to Inward Eyelashes
Understanding Follicular Conjunctivitis: Causes, Treatments, and Lens Use
Follicular conjunctivitis Hello Dr. Lin, a few months ago, I experienced a prickling and itchy sensation in my eyes (which occurs after noon). I visited a nearby ophthalmology clinic and received short-term medication treatment, but my symptoms have not improved since then. The d...
Dr. Lin Zhengyi reply Ophthalmology
1. If symptoms are mild, you can switch to wearing soft contact lenses from another brand (preferably disposable contact lenses) and reduce the daily wearing time of contact lenses, or switch to rigid gas permeable lenses. If symptoms are severe, you should stop wearing them. Con...[Read More] Understanding Follicular Conjunctivitis: Causes, Treatments, and Lens Use