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Li Zhen Dong
Ophthalmology
About me
Li Zhendong, male, graduated from Chengde Medical College, engaged in this profession for over 30 years, deputy chief physician, discipline leader, member of the Ophthalmology Association of the Medical Association, has participated in numerous domestic and provincial ophthalmology academic conferences. Also involved in teaching at the hospital.
He is conscientious and responsible in his ophthalmic work, pays attention to improving his professional qualities and abilities, keeps up to date with new developments in international and domestic ophthalmology, has a solid foundation of theoretical knowledge, is familiar with ophthalmic diagnostic, treatment, and surgical methods, specializing in ophthalmic microsurgery, especially cataract and eye trauma.
In clinical practice, he is bold yet meticulous, good at critical thinking and innovation. In recent years, he has introduced and performed cataract removal surgery with implantation of artificial lenses, restoring sight to many patients. He has accumulated rich clinical experience in the diagnosis and treatment of pediatric refractive errors, eye trauma, and coal mine eye injuries, showing unique skills in surgical treatment.
He has published over 20 papers in international, domestic, provincial, and municipal journals. Among them, the papers on "Diagnosis and Treatment of Coal Mine Eye Injuries" and "Clinical Diagnosis and Treatment of Pediatric Eye Injuries" were presented and published at international ophthalmology conferences, earning praise from peers. He has received multiple awards in science and technology.
Proficient in diseases
Diagnosis and treatment of common eye diseases, prevalent diseases, and challenging diseases.
Voices
Can inverted eyelashes be plucked out?
Ingrown eyelashes should not be plucked, as this can cause the new eyelashes to grow back thicker and harder, leading to more severe damage to the conjunctiva and cornea. If there are only a few, electrolysis treatment for the eyelashes is possible. If the condition is severe, surgical treatment to correct the ingrown eyelashes is entirely feasible. During this period, using eye drops such as levofloxacin eye drops and sodium hyaluronate eye drops can be beneficial. Do not apply heat, monitor your vision, and have regular check-ups. Eat a light diet and avoid spicy and irritating foods. (Note: The use of medications should be under the guidance of a professional doctor.)
What is the cataract OCT examination?
OCT is used for examining the macula and optic nerve head of the retina. It is a non-destructive, non-contact method that performs cross-sectional scanning of the ultrastructure on the retina. It primarily replaces ultrasound by using light waves to drive sound waves, conducting tomographic scans on biological tissues with low coherence, and displaying the results in forms of graphics and numbers. In this context, it is mainly used for diagnosing macular lesions and optic nerve head lesions. For cataract examinations, this method is generally not used; instead, ocular B-ultrasound and slit lamp microscopy are sufficient for detection.
Conjunctivitis systemic symptoms
Conjunctivitis is an inflammation of the white part of the eye, and it can be categorized into bacterial, viral, and fungal conjunctivitis. Generally, conjunctivitis does not produce systemic symptoms. The symptoms related to the eye include redness, swelling, pain, tearing, foreign body sensation, burning, increased discharge, without obvious impact on vision. If conjunctivitis is accompanied by a lymphatic infection, there might be a mild fever. In such cases, active treatment with eye drops and ointments is recommended. Do not apply heat, maintain a light diet, adjust your mental attitude, rest adequately, regularly check up on your condition, and pay attention to any changes in vision.
What is the uncorrected visual acuity of high myopia?
Myopia can be classified as mild myopia from 200-400 degrees, moderate myopia from 400-600 degrees, and high myopia as above 600 degrees. What is the uncorrected visual acuity for high myopia? There is no clear pattern for this because a visual acuity of 0.1 may be corrected to 1.0 with just 50 degrees, or it might not reach 0.5 even with 1000 degrees. Therefore, uncorrected visual acuity is not a standard measure for high myopia. The level of uncorrected visual acuity depends on the condition of the eye's axial length and diopter. If the change in the axial length is not significant, a minor uncorrected visual acuity is not crucial, and the required correction might be very low. Conversely, the longer the axial length, the higher the correction needed might be.
Can people with trichiasis wear orthokeratology lenses?
If you have trichiasis, it is generally not advisable to wear orthokeratology lenses until the trichiasis is treated. The treatment for trichiasis is straightforward. If there are only a few inverted eyelashes, electrolysis can be performed. If there are many, surgical treatment can be carried out. This is because trichiasis can easily lead to various pathological changes in the conjunctiva and cornea, such as conjunctivitis and keratitis. Keratitis can lead to the formation of corneal nebula, plaques, leukoma, or neovascularization. Therefore, it is crucial to treat the condition actively. Once the condition is stable and completely healed, then orthokeratology lenses can be worn. If there are only a few inverted eyelashes, electrolysis can be performed, and if there are many, surgical treatment can be considered, which is relatively simple.
The difference between transparent and black flying mosquito disease
Floaters appear before the eyes as either transparent or opaque, black objects—it's a matter of severity, generally not affecting vision. Floaters can be classified as physiological or pathological. Physiological floaters generally require only rest, reducing close-up tasks, and avoiding eye fatigue. Treatments can include using Ametiodine eye drops and Sodium Hyaluronate eye drops. If the floaters are pathological, one should visit an ophthalmologist for examinations such as an ultrasound (B-scan), intraocular pressure test, uncorrected visual acuity, corrected visual acuity, and fundus photography. Active treatment and regular follow-ups should be pursued, with close attention to vision changes. (Please use medication under medical supervision.)
Can eye fatigue lead to nearsightedness?
Myopia is characterized by clear vision up close but blurry vision at a distance, primarily caused by changes in the eye's axial length. Several factors contribute to the development of myopia: first, hereditary factors; second, inappropriate use of eyes, such as prolonged usage leading to eye fatigue, which can worsen the degree of myopia. Typically, the development of myopia occurs under the age of 20. After 20, there shouldn't be further development; if there is, it is referred to as pathological myopia. Therefore, it is important for patients with myopia or eye fatigue to use their eyes correctly, reduce close-up activities to avoid eye strain, and have regular check-ups to monitor their vision.
Severe cases of floaters can lead to what outcomes?
Floaters, also known as vitreous opacities, can be divided into physiological and pathological types. Physiological vitreous opacities, even if severe, do not affect vision, but simply result in a higher number of floating objects seen in the field of vision. Pathological vitreous opacities, on the other hand, can significantly decrease vision and may even lead to blindness. Therefore, during an examination, it is important to first check the uncorrected visual acuity, corrected visual acuity, intraocular pressure, ocular B-ultrasound, and fundus photography. If there are any underlying eye conditions, they should be actively treated to potentially restore vision as soon as possible. It is also advisable to ensure adequate rest, reduce close-up activities, and maintain a light diet.
Can teenagers get floaters?
Floater syndrome can also occur in adolescents. Floater syndrome is also known as vitreous haze. Mild vitreous haze does not affect vision, but it is more noticeable under bright light. The shapes vary, and they seem to fly in front of the eyes, typically not visible in darker environments, which means they are hard to see at night. In such cases, it is important to rest properly and use one's eyes correctly. If there is any refractive error, it should be correctly addressed with appropriate glasses. If conditions like myopia, hypermetropia, or astigmatism are not actively treated, they can lead to varying degrees of amblyopia or strabismus, thus they should be taken seriously.
How to distinguish between viral conjunctivitis and allergic conjunctivitis?
Allergic conjunctivitis mainly presents with itching and conjunctival edema, generally without obvious secretions. Viral conjunctivitis usually has watery secretions and lacks significant itching. In terms of treatment, viral conjunctivitis is primarily treated with antiviral medications, such as aciclovir eye drops and ganciclovir eye drops. The treatment for allergic conjunctivitis mainly involves steroid eye drops and non-steroidal eye drops, and also requires the use of anti-inflammatory eye drops. Neither type of conjunctivitis should be treated with warm compresses. For allergic conjunctivitis, it is also important to avoid allergens, while for viral conjunctivitis, it is crucial to be aware of any visual impairments. (Note: The use of medications should be carried out under the guidance of a professional doctor.)