Speaking of presbyopia, many people will not feel very strange. There are many causes of presbyopia. Once you unfortunately get presbyopia, it will have a great impact on the patient's daily life. Next, I will introduce the reasons for 40 year old presbyopia. I hope it will be useful to you!
1. Ametropia
Presbyopia appeared earlier in hyperopia than in myopia; After myopia wears frame glasses, the adjustment demand of the same reading distance is reduced because the corrected negative lens is 12 ~ 15mm away from the corneal apex. However, for myopia wearing corneal contact lenses, the corrected optical system is close to emmetropia because the corneal contact lenses are worn on the corneal surface. Therefore, presbyopia occurs earlier when wearing corneal contact lenses than when wearing ordinary frame glasses.
2. Eye method
The adjustment demand is directly related to the working distance. Therefore, those engaged in close-up fine work are prone to the symptoms of presbyopia. Those engaged in fine close-up work appear presbyopia earlier than those engaged in long-distance work.
3. Physical quality of patients
The tall man with long arms has a longer working distance than the short man with short arms and needs less adjustment. Therefore, the latter has presbyopia symptoms earlier.
4. Geographical location of the patient
Because of the influence of temperature on crystals, people living near the equator have presbyopia symptoms earlier.
5. Effects of drugs on patients
Patients taking insulin anti anxiety drugs, antidepressants, antipsychotics, antihistamines, antispasmodic drugs and diuretics will have presbyopia earlier due to the effect of drugs on ciliary muscles.
1. Cold water eye wash
Wash your eyes and face with cold water every morning and before going to bed. Soak your eyes in clean cold water for 1 ~ 2 minutes or pour water into your eyes with your hands, dry your eyes with a towel, and then gently rub around your eyes with your fingers for about 30 times.
2. Regular overlooking
Get up early, at noon and before dusk every day, overlook for 1 ~ 2 times. Choose the farthest target and keep your eyes on the object for about 10 minutes.
3. Blink often
Blinking often can stimulate and enhance the kinetic energy of eye muscles and delay aging. The method is to open and close your eyes, blink about 15 times each time, and gently rub your eyes with both hands to moisturize your eyes.
4. Rotating eyeball
Clockwise and counterclockwise circulation rotation can improve the blood circulation of eye muscles, refreshing and eye-catching.
5. Hot compress eye protection
Apply a hot towel on the eyes and exchange it for several times to make the blood vessels in the eyes flow smoothly and supply oxygen and nutrition to the eye muscles.
6. Anti eye fatigue
When reading newspapers and TV, keep a certain distance. The time should not be too long to prevent excessive fatigue of eye muscles and vision.
1. Face the old flower calmly. Don't "cover it up". When it's time to match the lens, you can only suffer from your own sin if you don't match the lens.
2. Don't blame Lao Hua for unclear vision. Many problems will cause vision problems, such as cataract and chronic glaucoma. It's the best way to diagnose ophthalmologists.
3. People who wear myopia glasses can't offset myopia with old flowers. They don't have to wear glasses. With old flowers, you will still have myopia. You should still use myopia glasses to see far away.
4, when there is cataract or poor control of diabetes, the crystal will experience edema, and the scene will be pulled before, causing temporary myopia and reducing the phenomenon of old flowers. At this time, do not be pleased with oneself, but look at the doctor's reasons.
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