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17
Wang Hui Zhen
Ophthalmology
About me
Ophthalmology, Associate Chief Physician.
Proficient in diseases
Diagnosis and treatment of common eye diseases.
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Can high myopia with bulging eyes be corrected?
High myopia with bulging eyes is caused by the elongation of the eye axis, which is irreversible. Myopia is when parallel light rays entering the eye are focused in front of the retina, after passing through the eye's refractive system, and thus cannot form a clear image on the retina. Myopia can be classified into low, moderate, and high degrees, with high myopia defined as 600 degrees or more. Once myopia progresses to true myopia, it is incurable, and one can only correct or control its progression. Before the age of 18, myopia can only be corrected and controlled by wearing frame glasses or orthokeratology lenses; after the age of 18, elective surgeries like myopic correction surgery or artificial lens implantation are also available options for correcting myopia.
Is the risk of surgery for floaters high?
Whether surgery is needed for floaters and whether the risks of surgery are significant depends on whether the condition is physiological or pathological. There are many treatment methods for pathological floaters. Some surgeries have higher risks, such as vitrectomy; while others have lower risks, such as intravitreal injection of anti-VEGF drugs. Clinically, floaters are referred to as vitreous opacities and can be divided into physiological and pathological types. Physiological floaters occur when one observes floating black spots in front of the eyes while looking at objects or the blue sky, with no pathological changes found in ophthalmological examinations, thus requiring no treatment. Pathological floaters manifest as a sudden appearance of floaters, a rapid increase in floaters, a fixed black shadow blocking vision, or even a decrease in central vision. These are often seen in conditions such as retinal vascular rupture, vitreous hemorrhage, or vitritis, and it is advisable to consult an ophthalmologist to determine the cause and receive targeted treatment.
Is it good to apply heat to the eyes every day for myopia?
Applying heat to the eyes every day cannot control myopia, but it can slightly relieve eye fatigue, dryness, and other discomforts. Myopia occurs when parallel rays of light enter the eye and focus in front of the retina through the eye's refractive system, failing to form a clear image on the retina. If myopia is pseudomyopia, it might recover through rest, relaxation, and pupil dilation. However, if it progresses to true myopia, it becomes irreversible and incurable; vision can only be corrected and its progression controlled. Before the age of 18, myopia can be corrected with glasses or orthokeratology lenses. After turning 18, corrective surgery for myopia might be an option. It is advised that adolescents and children actively control the progression of myopia.
What are the early symptoms of cataracts?
Cataracts are a vision-impairing disease caused by the clouding of the lens, a crucial optical component in the human eyeball, which is normally transparent. The clouding occurs due to the denaturation of lens proteins for various reasons, leading to various degrees of vision impairment in patients. Some patients with cataracts may not exhibit noticeable symptoms in the early stages, while others may experience mild blurriness in vision initially. As the cloudiness of the lens gradually worsens, the blurring of vision progressively intensifies. Some may even experience symptoms like nearsightedness, double vision, strabismus, or glare. If these symptoms occur, it is advised to seek prompt medical attention from an ophthalmologist, undergo relevant examinations, and based on the extent of lens cloudiness, decide whether cataract removal surgery is necessary.
Advantages and disadvantages of cataract surgery for the elderly
Any surgery carries risks, and cataract surgery is no exception. However, many elderly people have mature cataracts that require prompt surgical treatment. If not addressed timely, it can lead to blindness or even cause secondary glaucoma, leading to symptoms such as eye pain, headaches, nausea, and vomiting. In some advanced cases, it can lead to neovascular glaucoma, making it difficult to control intraocular pressure. Cataracts are a vision-impairing disease caused by the clouding of the lens, which is an important optical component in the human eyeball. Normally, the lens is transparent. In elderly people, the lens proteins often degenerate and age, leading to cloudiness and various degrees of vision impairment. It is advisable for those with cataracts to seek prompt ophthalmologic care and, if necessary, undergo cataract removal surgery. Complications and sequelae from cataract surgery may include postoperative infection, shallow anterior chamber, corneal edema, explosive bleeding, macular edema, and more.
What is the most effective treatment for floaters?
Clinically known as vitreous opacity, floater disease may require treatment depending on whether it is physiological or pathological. Physiological floaters refer to the observation of floating black shadows in front of eyes when looking at objects or a blue sky. Eye examinations reveal no pathologies, thus no treatment is necessary and there are no specific treatments available. In severe cases, consideration may be given to treatments such as iodamide eye drops or laser therapy. Pathological floaters occur when floaters suddenly appear in one eye, dramatically increase in number, or there are persistent black shadows that even diminish central vision, often associated with retinal vascular rupture, vitreous hemorrhage, or vitritis. It is advisable to seek ophthalmologic care to diagnose the cause and treat accordingly. Common and effective treatments include retinal laser photocoagulation, intravitreal injection of anti-VEGF drugs, or vitrectomy.
Can astigmatism wear orthokeratology lenses?
Astigmatism below 300 degrees generally can be corrected with orthokeratology (OK) lenses. Astigmatism is a type of refractive error where the eye has different refractive powers in different meridians, causing parallel light rays passing through the eye's refractive system to refract improperly and form two focal lines instead of a single focal point on the retina, resulting in a blurred image. Astigmatism can be categorized into regular astigmatism and irregular astigmatism. Regular astigmatism can be corrected using cylindrical lenses or glasses, while irregular astigmatism may require correction with corneal contact lenses, OK lenses, or surgical correction. Common symptoms of astigmatism include blurred vision, reduced visual acuity, and easy eye fatigue, and sometimes may also present with symptoms such as head tilting and headaches. Therefore, it is advisable to seek consultation in the ophthalmology refractive department if astigmatism symptoms appear.
What causes sudden night blindness?
There are many causes of sudden night blindness. Night blindness refers to blurry vision or even complete inability to see in low-light conditions such as nighttime, possibly even leading to difficulties in movement. Night blindness can be categorized into congenital, acquired, and temporary types. Congenital night blindness is mostly related to genetic factors, where the patient is born with a deficiency in synthesizing rhodopsin, leading to night blindness. Temporary night blindness is often due to a lack of Vitamin A in the diet, or due to some digestive system diseases that affect the absorption of Vitamin A. Acquired night blindness is usually caused by diseases of the retina or the eye itself. Therefore, if sudden night blindness occurs, it is recommended to go to a reputable hospital's ophthalmology department for comprehensive examinations such as visual acuity, intraocular pressure, slit lamp, dilated fundus examination, and if necessary, further tests like fundus fluorescein angiography to identify the cause and provide targeted treatment.
Early symptoms of glaucoma
There are many types of glaucoma, and the symptoms vary between different types. Some patients with glaucoma might not have noticeable symptoms in the early stages; others may only experience mild eye soreness and occasional blurred vision, which can improve with rest; some present with insidious vision decline and field defects. Glaucoma refers to a group of progressive optic nerve damage that eventually impairs vision, mainly associated with pathological elevation of intraocular pressure. Glaucoma is the second leading cause of blindness worldwide, and it is the top irreversible blinding eye disease. Common symptoms of glaucoma include blurry vision, vision decline, field defects, and acute attacks, often accompanied by eye pain, headache, nausea, vomiting, and more. If glaucoma symptoms occur, or there is a suspicion of glaucoma, it is advised to visit an ophthalmology clinic for comprehensive examinations like visual acuity, intraocular pressure, fundus examinations, etc., to determine the cause and provide targeted treatment, actively reduce intraocular pressure, and protect the optic nerve.
What are the early symptoms of cataract?
Early symptoms of cataracts are not obvious in some patients, while others may experience mild blurriness of vision. As the lens becomes cloudier, the blurriness will gradually worsen, and symptoms such as nearsightedness, glare, and double vision may also appear. In advanced stages, some may develop glaucoma, leading to symptoms like eye pain, headache, nausea, and vomiting, and in severe cases, it can cause blindness. Cataracts are a common and prevalent eye disease and are the leading cause of blindness worldwide. The lens, an important optical component of the human eye, is normally transparent. Cataracts can form due to various reasons leading to protein degeneration in the lens, causing it to become cloudy and result in various degrees of vision loss. It is recommended that patients with cataracts regularly visit ophthalmologists and consider cataract removal surgery if necessary.