Binocular disparity, Ophthalmology FAQ - Page 2

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Understanding Parallax Issues in Vision: A Guide for Patients

Parallax issue Doctor, I have had vision problems since the first grade of elementary school (right eye myopia -50, left eye hyperopia +50). Initially, it was pseudomyopia, but it later progressed to true myopia. When I first developed myopia, I experienced some dilation, but it ...


Dr. Cai Wenyuan Reply:
Hello, based on your description, the use of glasses and patching one eye for treatment suggests a case of amblyopia. After the age of 18, the likelihood of an increase in prescription is reduced, and there should not be significant changes in binocular disparity. Wishing you pea...

[Read More] Understanding Parallax Issues in Vision: A Guide for Patients


Chronic Keratitis: Managing Symptoms and Finding Relief

Keratitis has lasted for more than three months? Due to working long night shifts, my keratitis has not improved. What should I do? I have already visited the clinic five or six times and went to a large hospital once. My work schedule is unstable, making it difficult to return f...


Dr. Cai Wenyuan Reply:
Hello, the issue of keratitis is indeed not easy to resolve and it takes a long time for the cornea to recover its health. In addition to medication, it is also important to wear contact lenses less frequently and to limit screen time with electronic devices. With persistence, I ...

[Read More] Chronic Keratitis: Managing Symptoms and Finding Relief


Understanding Cataracts and Optic Nerve Atrophy: Key Questions for Your Doctor

I would like to ask the doctor some questions regarding cataracts and concurrent optic nerve atrophy? 1. Is it true that "preserving the disparity between the two eyes is less likely to cause visual imbalance"? 2. Is optic nerve atrophy leading to vision loss an irrev...


Dr. Gao Pilin Reply:
Dear Mr. Song, The narrowing of the visual field caused by neurodegeneration is an irreversible phenomenon, and currently, there is no way to reverse it. As for the binocular disparity, it may allow your father to avoid wearing glasses; without disparity, he would need glasses f...

[Read More] Understanding Cataracts and Optic Nerve Atrophy: Key Questions for Your Doctor


Understanding Binocular Disparity: Vision Clarity and Cataract Surgery

Binocular disparity? Hello, Doctor: I would like to ask a few questions. 1. If one eye has clear vision and the other is blurry, I have heard that this can lead to a decline in vision. Which eye is more likely to deteriorate, the clear one or the blurry one? 2. I originally h...


Dr. Gao Pilin Reply:
Hello, Ba Zi: 1. It will not happen. 2. The power of the intraocular lens depends on the degree of correction needed, and the final prescription can only be determined through an eye examination. You can wear contact lenses in your left eye, but it is advisable to avoid wearin...

[Read More] Understanding Binocular Disparity: Vision Clarity and Cataract Surgery


Understanding Unilateral Eye Pain: Causes, Symptoms, and Treatment Options

Unilateral eye pain? Hello, doctor. I am currently a graduate student preparing for my oral defense and I have been experiencing floaters. When looking at a white piece of paper, the blank areas are filled with moving black dots, similar to the static on a television screen. Addi...


Dr. Chen Anping Reply:
1. Due to binocular disparity, prolonged eye use can lead to fatigue. 2. 95% of cases of floaters are benign, but it is still important to see a doctor early for a thorough examination of the retina. 3. Replacing glasses will not improve this condition.

[Read More] Understanding Unilateral Eye Pain: Causes, Symptoms, and Treatment Options


Understanding Binocular Disparity: Do You Need Glasses After LASIK?

Binocular disparity Hello, after undergoing laser surgery for myopia, one eye has developed astigmatism of 75 degrees, while the other eye has myopia of 75 degrees. Does this constitute a disparity between the two eyes? Is it necessary to wear corrective glasses? Thank you.


Dr. Gao Pilin Reply:
Hello, regarding the degree of your vision, it is not significant. If you can see clearly, there is no need to wear glasses. The Ophthalmology Department of Puzi Hospital in Taiwan is open Monday to Friday from 8:00 AM to 12:00 PM and Wednesday afternoons from 1:00 PM to 4:30 PM....

[Read More] Understanding Binocular Disparity: Do You Need Glasses After LASIK?


Choosing the Right Intraocular Lens for Cataract Surgery in One Eye

Selection of Intraocular Lenses for Unilateral Cataract? Hello Doctor, I was recently diagnosed with cataracts in my right eye at a clinic near my home, and I was advised to go to a larger hospital for further examination. The results from the larger hospital confirmed the findin...


Dr. Wang Zhishun Reply:
Hello, it mainly depends on individual needs (work and daily life), as well as the condition of the other eye and overall health. 1. Monofocal lenses can accommodate up to 200 degrees, which allows for acceptable binocular disparity and may provide the opportunity to avoid readin...

[Read More] Choosing the Right Intraocular Lens for Cataract Surgery in One Eye


Understanding Eye Pain: Is It Related to Vision Discrepancy After Correction?

Corrected vision: Left eye 1.2, Right eye 0.8? Hello Doctor: Recently, I have been experiencing soreness and sharp pain in my right eye, and I am wondering if it is related to binocular disparity. After correction, my left eye is 1.2 and my right eye is 0.8. According to a test p...


Dr. Chen Anping Reply:
Hello, the stabbing pain in your right eye is likely not significantly related to the binocular disparity after correction. It may also be associated with prolonged use of computer screens. However, it is still recommended that you visit an ophthalmologist for a thorough examinat...

[Read More] Understanding Eye Pain: Is It Related to Vision Discrepancy After Correction?


Managing Anisometropia: Tips for High Myopia and Vision Discrepancies

Regarding parallax? Hello, Doctor Gao: I am highly myopic (left: -10.50, right: -13.00) and have binocular disparity. I usually wear rigid gas permeable contact lenses at work, which are properly prescribed. However, after work, I wear glasses (prescription: left -9.00, right -11...


Dr. Gao Pilin Reply:
Hello: When exercising and looking into the distance, the binocular disparity will not decrease. This is because the higher degree of myopia will not lessen. Covering the left eye and forcing the right eye to look far away will not change the disparity either. The difference in p...

[Read More] Managing Anisometropia: Tips for High Myopia and Vision Discrepancies


Managing Significant Myopia Difference in Children: Tips and Concerns

The two eyes have a difference of 300 degrees in myopia? My child is currently 14 years old, and there is a 300-degree difference in myopia between the left and right eyes. A year ago, the difference was 150 degrees, and a recent examination indicates that the disparity seems to ...


Dr. Qiu Hanqing Reply:
Thank you for your concern regarding your child's vision issues! Generally, myopia can be classified into: 1. Refractive myopia: caused by excessive curvature of the cornea or lens, spherical lens, or nuclear cataract. 2. Axial myopia: this type is common among school-aged c...

[Read More] Managing Significant Myopia Difference in Children: Tips and Concerns


Glaucoma and Military Service: Vision Requirements for Exemption

Regarding the military service issues related to glaucoma? Hello, doctor: I have currently been diagnosed with glaucoma but have no other pathological changes. The military service assessment mentioned exemption: glaucoma without pathological changes is determined by visual acuit...


Dr. Wang Zhishun Reply:
Hello, for simple refractive errors, it is necessary to perform dilation and measure the total spherical equivalent refractive error in one eye greater than 1000 diopters, or a binocular disparity greater than 500 diopters. Thank you.

[Read More] Glaucoma and Military Service: Vision Requirements for Exemption


Understanding Visual Disturbances: Eye Symptoms After Anxiety and High Blood Pressure

Experiencing discomfort in the eyes while looking at a screen? About two months ago, I experienced a panic attack that caused my blood pressure to spike rapidly (185/105~115). During that episode, I noticed a thin black line in my vision that pulsed with my heartbeat; I could see...


Dr. Liu Jingxian Reply:
Hello, sir: Based on your described symptoms, in addition to the presence of floaters, you also experience a difference in the perceived size of images between your two eyes. In most patients, the occurrence of floaters is due to the degeneration of the vitreous body within the e...

[Read More] Understanding Visual Disturbances: Eye Symptoms After Anxiety and High Blood Pressure


Post-Strabismus Surgery: Understanding Vision Changes and Solutions

Questions about strabismus surgery! I have had esotropia since childhood, which has led to amblyopia in my affected eye. This means that the eye with strabismus also has reduced vision, resulting in a significant disparity between my two eyes. After wearing glasses, one eye has a...


Dr. Liu Jingxian Reply:
Hello, Miss: Based on your description, the postoperative eye alignment results appear to be normal according to your friends' observations. However, you still feel something is off. Possible reasons for this situation include: 1. Poor stereopsis: The development of stereo...

[Read More] Post-Strabismus Surgery: Understanding Vision Changes and Solutions


Understanding Amblyopia: Which Eye to Treat with Atropine?

Amblyopia Dear Dr. Liang, my daughter is 6 years old and was diagnosed with amblyopia (right eye) six months ago. Could you please advise which eye should be treated with the cycloplegic agent? Thank you.


Dr. Liang Ce Reply:
I apologize for the delay in my response. My colleague forwarded your email to me yesterday at 5:30 PM, and I was almost shocked to see the date. We are still investigating the reasons for the delay and will certainly improve in the future. Regarding your question, there are ma...

[Read More] Understanding Amblyopia: Which Eye to Treat with Atropine?


Understanding Parallax Issues in Myopia Management: Can Medication Help?

Parallax issue Hello, doctor. Thank you for your previous response regarding my brother's issue with binocular disparity. In your earlier reply, you mentioned that medication could help prevent the progression of high myopia in one eye. Is that correct? So, is there medicati...


Dr. Wang Zhangji Reply:
Hello! I'm not sure how old your brother is this year, but generally, myopia stabilizes after the age of 20 and is unlikely to increase significantly. Therefore, at this point, prescribing medication can help us determine if he has myopic progression. The significance of pre...

[Read More] Understanding Parallax Issues in Myopia Management: Can Medication Help?


Understanding Myopia: Risks, Astigmatism, and Eye Health Tips

Myopia Hello, doctor: I have a refractive error of about 200 degrees (R-775-125, L-575-125). Am I at a higher risk for eye diseases? What should I pay attention to regarding my refractive error? I've heard that those with myopia often have astigmatism; is that true? Why is t...


Dr. Liang Ce Reply:
Binocular disparity itself does not necessarily indicate an eye disease, but your right eye is highly myopic, which increases the risk of degenerative eye conditions such as floaters and retinal degeneration. There is also a higher likelihood of developing glaucoma. Binocular dis...

[Read More] Understanding Myopia: Risks, Astigmatism, and Eye Health Tips


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