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18
Hu Shu Fang
Ophthalmology
About me
Loudi Central Hospital, Ophthalmology, Chief Physician, has been engaged in clinical work in ophthalmology for many years, with rich clinical experience in the diagnosis and treatment of common eye diseases.
Proficient in diseases
Specializes in common eye diseases such as dry eyes, sympathetic ophthalmia, night blindness, blindness, amblyopia, astigmatism, trachoma, cataracts, diabetic retinopathy, conjunctivitis, presbyopia, color blindness, etc.
Voices
What causes cataracts?
There are many factors that cause cataracts, the most common being age-related cataracts. As we age, we are exposed to ultraviolet rays which can cause degeneration of the lens. The older a person is, the more ultraviolet rays they absorb. Some cataracts are also caused by medications, such as long-term use of steroids. Additionally, some cataracts are caused by trauma; if the lens is accidentally punctured during an injury, it can rapidly deteriorate. There are also congenital cataracts caused by intrauterine infections. The causes are various, and in diabetic patients, their cataracts can progress more quickly because high blood sugar can lead to changes in the osmotic pressure of the lens.
Is refractive error in children a serious issue?
Refractive errors in children should catch the attention of parents. Some minor refractive errors may not affect a child's vision or visual development, but as they grow older and their studies become more demanding, if these errors are not corrected at the appropriate time, the myopia in some children can deepen quickly. If some children are hyperopic, a high degree of hyperopia can affect their visual development, causing strabismus and amblyopia. Some children with low degrees of astigmatism, which do not affect visual development, can just have regular check-ups. However, for high degrees of astigmatism, if a child cannot correct their vision to the best possible level or to the level of normal children their age, glasses should be prescribed to improve their vision.
Can glaucoma be contagious?
Glaucoma is not contagious. It is not an infectious disease; rather, it is a group of diseases characterized by increased eye pressure, leading to optic nerve atrophy and vision decline. The most common cause is genetic factors, meaning if elders or parents in the family have this condition, the incidence of glaucoma in their offspring will also be higher. It is an eye disease caused by anatomical abnormalities of the eye. Additionally, some cases of glaucoma are caused by trauma or other reasons, so glaucoma is not contagious.
How can children with myopia recover their eyesight?
Children with myopia should go to a formal optometric center for eye examinations and to get properly prescribed glasses. After wearing glasses, it is important in daily life to not read or write in dim environments and to maintain a correct posture while reading or writing. Abide by the "rule of three": the distance between the eyes and the book should be about one foot; the distance between the body and the desk should be about one fist; and the distance from the tip of the pen to the holding point should be about one inch. This can help prevent the deepening of myopia in children. Additionally, after using the eyes for forty minutes, it is recommended to gaze into the distance or perform eye exercises to relieve eye fatigue. Children should engage in outdoor activities for more than two hours per day, and more than fourteen hours per week, and they should have regular check-ups, generally every six months, to ensure the prescription of the glasses matches the degree of myopia. Currently, there are also options like orthokeratology lenses that can be worn at night to effectively control the progression of myopia.
Is it serious if glaucoma causes the pupil to enlarge?
Glaucoma is divided into many types, but the most common are primary angle-closure glaucoma and primary open-angle glaucoma. In these patients, if the pupil dilates or enlarges, the angle of the chamber becomes narrower, leading to increased intraocular pressure, which we refer to as an acute attack of glaucoma. After an attack, patients may experience headaches, nausea, and vomiting. Therefore, it is crucial for glaucoma patients to minimize the time spent in dark rooms to prevent pupil dilation and avoid triggering an acute attack of glaucoma.
What are the symptoms of cataracts?
Cataracts are caused by the clouding of the lens, leading to a decline in vision. Early symptoms include blurred vision, sometimes seeing black spots, and some patients report a significant decrease in vision in dim light, with both near and distant vision being unclear. As cataracts progress, the decline in vision becomes more pronounced, severely affecting the quality of life. Some patients with cataracts may also experience double vision, changes in color perception, and a significant decrease in vision, requiring surgical treatment.
Is nearsightedness surgery safe?
Myopia surgery is relatively safe, but it is essential to understand the specific indications and contraindications before undergoing such a procedure. Firstly, myopia surgery involves operations on the cornea, including the creation of a concave lens on the surface, and intraocular procedures, such as the implantation of artificial lenses for those with lens-related issues. If there are other underlying retinal problems, these conditions are absolute contraindications. For surgeries on the cornea, it is crucial to measure the corneal thickness and rule out conditions like keratoconus. Once the contraindications and indications are properly assessed, these surgeries are very safe to perform.
What is refractive error?
Refractive errors in ophthalmology include myopia, hyperopia, and astigmatism. The optical principle behind these is that parallel light rays, after passing through the optical system of the eyeball, do not focus on the retina, and therefore do not form a clear image. This condition is known as a refractive error. In everyday life, some people mistakenly believe that presbyopia is also a refractive error, but presbyopia is not a refractive error; it is a physiological condition. The common refractive errors are the three types I just mentioned: myopia, hyperopia, and astigmatism.