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Peng Xi Feng
Ophthalmology
About me
Shenzhen Longgang Central Hospital, Ophthalmology Deputy Chief Physician.
Proficient in diseases
Familiar with the diagnosis of various common eye diseases such as cataracts, glaucoma, eye trauma, and ocular surface diseases, skilled in eye fluorescein angiography, electrophysiology, eye A/B ultrasound and other examinations.
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How is conjunctivitis caused?
Conjunctivitis is one of the most common diseases in ophthalmology. The causes can be divided into microbial and non-microbial categories, and based on different sources, they can be categorized as exogenous or endogenous. It may also be caused by the spread of inflammation from adjacent tissues, with the most common cause being microbial infections. The pathogens can be bacteria or chlamydia, with occasional fungal, Rickettsia, and parasitic infections.
Should people with conjunctivitis avoid certain foods?
Patients with conjunctivitis should avoid spicy foods, such as onions, leeks, garlic, chili peppers, lamb, dog meat, and other heat-inducing comfort foods, which are not conducive to the early recovery of the disease. Additionally, they should consume less shrimp, crab, and other seafood that may exacerbate the condition. Smoking is also prohibited due to the presence of nicotine in cigarettes, which constricts blood vessels and can worsen red eye, thus smoking must be strictly avoided. Furthermore, alcohol consumption should be avoided as it can prolong the disease.
Is conjunctivitis contagious?
Hyperacute bacterial conjunctivitis has a short incubation period and progresses rapidly. It can be transmitted through genital-eye contact. Acute or subacute bacterial conjunctivitis, commonly known as pink eye, is highly contagious, prevalent in the spring and autumn, and is generally spread through contact with items used by an infected person. Therefore, it is essential to take preventive measures.
Acute conjunctivitis is commonly known as pink eye.
Acute conjunctivitis, commonly known as pink eye or "fire eye," is more prevalent in spring and summer. It is a seasonal contagious disease, mainly transmitted through contact. Transmission often occurs by touching the secretions from the eyes of an infected person, shaking hands with someone who has pink eye, or by rubbing the eyes with dirty hands. Acute conjunctivitis is highly contagious, and the symptoms of eye irritation are quite severe, including sensations of stinging, burning, foreign body sensation, as well as photophobia, tearing, and purulent discharge. It is essential to seek medical attention promptly and to emphasize isolation and disinfection.
Precautions for Conjunctivitis
For conjunctivitis, strict attention must be paid to personal and public hygiene. Second, patients in the acute phase need to be isolated to avoid contagion and prevent an epidemic. Third, strict disinfection is required for face-washing items, towels, and medical instruments that have been used by the patient. Fourth, medical staff must wash and disinfect their hands after contact with patients to prevent cross-infection. Fifth, newborns should routinely be given antibiotic eye drops immediately after birth.
How is conjunctivitis transmitted?
Conjunctivitis is one of the most common eye diseases. The causes of conjunctivitis can be divided into microbial and non-microbial categories, and based on different sources, it can be classified as exogenous or endogenous. It can also be caused by the spread of inflammation from adjacent tissues, with microbial infection being the most common. Transmission primarily occurs through contact, hence it is necessary to strictly disinfect washbasins, towels, and other items that the patient has used.
Acute conjunctivitis etiology
Acute conjunctivitis, also known as acute catarrhal conjunctivitis and commonly referred to as pink eye, is highly contagious. It is most often seen in the spring and autumn seasons. The infection can occur sporadically or can spread in community settings such as schools and factories. The onset of the disease is sudden, with an incubation period of one to three days. Both eyes may be affected simultaneously or one to two days apart. The inflammation is most severe three to four days after onset and then gradually lessens, with the course of the disease generally lasting less than three weeks. The most common pathogens are Streptococcus pneumoniae, Staphylococcus aureus, and Haemophilus influenzae. The pathogens can vary with the seasons; studies indicate that infections in the winter are mainly caused by Streptococcus pneumoniae, while Haemophilus influenzae conjunctivitis is more common in the spring and summer.
How is a cataract formed?
Inside the eyeball, there is a relatively important transparent tissue called the lens. Clinically, clouding of the lens is referred to as cataracts. Many factors, such as aging, genetics, metabolic abnormalities like diabetes, trauma, radiation, poisoning, and local nutritional disorders, can lead to damage to the capsule of the lens, increasing its permeability and losing its barrier function, or causing metabolic disturbances in the lens. This can cause the proteins in the lens to denature, leading to cloudiness of the lens, which is known as cataracts. Under a slit lamp microscope, varying degrees of cloudiness in the lens can be observed.
What to do if conjunctivitis is accompanied by a fever?
Conjunctivitis, also referred to as acute or subacute conjunctivitis, commonly known as "pink eye," is caused by bacterial or viral infections, which can also lead to fever. It is a relatively common disease. It is important to rest, drink plenty of water, avoid staying up late, and consume a light diet with less oily food. Individual usage of washbasins and towels is recommended to prevent contagion. Treatment involves the use of anti-inflammatory and antiviral eye drops under medical supervision, typically resulting in recovery within about a week.
Common complications of trachoma
Trachoma is a chronic infectious conjunctival keratitis caused by Chlamydia trachomatis. It is named trachoma because it forms a rough, uneven appearance on the surface of the conjunctiva, resembling sand grains. The complications of trachoma mainly include common conditions such as entropion, trichiasis, trachomatous corneal ulcers, ptosis, trachomatous dry eye, tear duct obstruction, chronic dacryocystitis, symblepharon, and corneal opacity, among others.