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Deng Jiang Tao
Ophthalmology
About me
With 6 years of experience in ophthalmology clinical work, I am familiar with the diagnosis and treatment of various common eye diseases such as cataracts, glaucoma, ocular trauma, ocular surface diseases, and refractive errors.
Proficient in diseases
Cataracts, glaucoma, eye trauma, strabismus, amblyopia, hyperopia, eyelid surgery and other diagnostic and treatment services.
Voices
How is refractive error treated?
Refractive errors come in several types, commonly including myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. Generally, these are the four main categories. Regardless of the type, the treatment methods for refractive errors typically involve the following: one method is wearing frame glasses to improve or maintain good vision. Another method is using contact lenses to achieve good vision. Lastly, corrective surgery, such as LASIK, can be performed to correct the vision permanently. These are the three basic approaches.
Is vitreous opacity cataract?
Vitreous opacity and cataract are two different concepts; they are two different diseases. Vitreous opacity occurs when the collagen in the vitreous cavity slowly emulsifies into a turbidity. A cataract occurs when the lens inside the human eye becomes cloudy, forming a cataract. These are two completely different diseases, and their treatment methods are generally different as well. Cataract treatment primarily involves surgery, whereas vitreous opacity, including floaters, does not require surgical treatment.
Consequences of not undergoing cataract surgery
First, it is important to understand what cataracts are. Cataracts are the clouding of the lens cortex, which commonly refers to the gradual whitening of the central pupil area, the black part of the eye. Cataracts, based on their stage of development, are divided into early, middle, and late stages. In the early stage of cataract, the vision is slightly impaired. In the middle stage, the cortex becomes moderately clouded, and vision might still be around 0.4 or 0.5. In the late stage, the cataract is severely matured, generally with vision lower than 0.3. Cataract in its early and middle stages might not necessarily require immediate surgery. However, in late stages, when vision drops below 0.3, surgery should be considered. If not treated surgically, the mature cataract can completely block light, progressively decreasing vision and eventually leading to blindness. Therefore, it is advisable to consider surgical treatment for cataracts in the late stage.
Does myopia correction rebound?
Will there be a rebound after myopia correction surgery? Generally, it relates to two aspects. The first is associated with your pre-surgery degree of myopia; the second relates to your habits in using your eyes after the surgery. Generally speaking, the higher the degree of myopia before the surgery, the more likely a rebound will occur. Roughly speaking, if your degree of myopia was above 700 degrees before the surgery, there's about a 20% to 30% chance of rebounding. However, a rebound does not mean it will return to the previous degree of over 700; typically, it might rebound by around 100 to 200 degrees. The second aspect is significantly related to your post-surgery visual habits. If, after the surgery, you frequently use computers, read documents, or use your phone, there’s a higher chance of experiencing some degree of rebound. Conversely, if your screen time is less, the proportion of myopia rebound tends to be smaller.
Where is the incision made for nearsightedness surgery?
Firstly, myopia surgery essentially involves thinning the cornea by cutting it, which is like transferring the degree of myopia onto the cornea itself. Let's first talk about the layering of the cornea. From front to back, the cornea is divided into five layers, generally consisting of the epithelial layer, anterior elastic layer, stromal layer, posterior elastic layer, and the corneal endothelial layer. Among these layers, the stromal layer is the thickest, about 500 microns, accounting for over 90% of the total corneal thickness. Therefore, during myopia surgery, the main area of cutting is in the stromal layer of the cornea.