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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.
Voices
Does conjunctivitis require an IV drip?
Conjunctivitis generally does not require intravenous treatment; it is mainly treated according to the cause, with local administration of medication being the primary approach. Systemic medication may be required when necessary. Eye drops are the most basic method of administering medication for conjunctivitis. Eye ointment can also be applied to the eyes; since it remains in the conjunctival sac for a longer duration, it is advisable to use it before bedtime. When there is a lot of secretion in the conjunctival sac, a non-irritating rinse solution can be used to wash the conjunctival sac. In severe cases of conjunctivitis, such as gonococcal conjunctivitis and chlamydial conjunctivitis, systemic antibiotics or sulfa drugs are needed in addition to local treatment.
Causes of cataracts
Various causes, such as aging, genetics, local nutritional disorders, immune and metabolic abnormalities, trauma, poisoning, radiation, etc., can lead to metabolic disorders of the lens, causing the denaturation of lens proteins and resulting in cloudiness; this is called cataract. Cataracts can be divided into congenital and acquired. Congenital cataracts, also known as developmental cataracts, are divided into anterior polar cataracts, posterior polar cataracts, nuclear cataracts, and total cataracts. Acquired cataracts are divided into senile cataracts, complicated cataracts, traumatic cataracts, metabolic cataracts, radiation cataracts, and those related to medications and poisoning.
Trachoma conjunctivitis symptoms
Trachoma is a chronic infectious conjunctivitis and keratitis caused by Chlamydia trachomatis, which can lead to blindness. During the acute phase in both eyes, symptoms include redness, pain, foreign body sensation, tearing, and purulent discharge, along with swollen lymph nodes, increased papillary formation in the palpebral conjunctiva, and multiple follicles covering the superior and inferior fornices. After the acute phase, which lasts one to two months, it enters a chronic phase where conjunctival congestion decreases, and the conjunctiva thickens with increased papillary and follicular formation. Complications in the later chronic stage mainly include entropion and trichiasis, eyelid ptosis, symblepharon, essential keratoconjunctivitis sicca, and chronic dacryocystitis leading to corneal opacity, among others.
How long does it take for conjunctivitis to heal?
Conjunctivitis can be categorized by the speed of onset into hyperacute, acute or subacute, and chronic. Depending on the severity of the condition, it can be classified as mild, moderate, or severe. Acute conjunctivitis is usually self-limiting, with the condition lasting about two weeks. After treatment with sensitive antibiotics, recovery can occur within a few days. Chronic conjunctivitis is not self-limiting and is more challenging to treat.
Can you take a bath with conjunctivitis?
Patients with conjunctivitis can bathe, but should strictly pay attention to personal and collective hygiene, advocate frequent handwashing and face washing, and avoid wiping eyes with hands or sleeves. Do not share a towel with others. Patients in the acute phase need to be isolated to prevent transmission and curb the epidemic. When one eye is infected, precautions should be taken to prevent the other eye from being infected.
What eye drops are used for trachoma?
Once diagnosed with trachoma, not only is it necessary to use local eye drops, but also systemic treatment is required. Commonly used local eye drops for trachoma include 0.1% rifampin eye drops, 0.5% penicillin eye drops, yellow safety eye drops, tetracycline eye ointment, erythromycin eye ointment, sulfa eye ointment, and the treatment course needs at least ten to twelve weeks. In the acute phase or severe cases of trachoma, systemic antibiotic treatment is also needed, generally for three to four weeks. Adults take oral tetracycline, while it is contraindicated for pregnant women, nursing women, and children under seven years old, who may alternatively use erythromycin. Note: Medication should be used under the guidance of a doctor.
What are the symptoms of conjunctivitis?
According to the onset speed of conjunctivitis, it can be divided into hyperacute conjunctivitis, acute or subacute conjunctivitis, and chronic conjunctivitis. The symptoms of conjunctivitis mainly include foreign body sensation, burning sensation, itching eyes, photophobia, tearing, and significant signs include conjunctival congestion, edema, increased secretions, papillary hyperplasia, follicles, pseudomembranes and true membranes, granuloma, and so on.
Is conjunctivitis prone to recurrence?
Conjunctivitis is a type of localized inflammation, similar to other inflammations. This disease may recur frequently, especially in children, infants, elderly or frail patients, or those with chronic debilitating diseases such as diabetes. Due to weaker bodily resistance, these individuals are more susceptible to repeated bacterial infections. To avoid such situations, it is advised to pay attention to healthy dietary habits, avoid spicy and irritating foods, and appropriately increase physical exercise to enhance resistance, thereby minimizing the chances of disease recurrence.
Does conjunctivitis require a dietary restriction?
When we look at our phones and computers for long periods, it can lead to conjunctivitis due to eye strain. Among conjunctivitis cases, allergic conjunctivitis is the most common, especially during the spring and autumn seasons when symptoms like itchy eyes often occur. During such times, it is best to avoid spicy, irritating foods and seafood, as consuming these can exacerbate the itching. Additionally, if it is bacterial conjunctivitis, it is also recommended to limit the intake of spicy and irritating foods.
How to treat refractive errors of the eyes?
Refractive error refers to the condition where, without accommodation, parallel light rays passing through the refractive media of the eye do not form a clear image on the retina, but rather form an image in front of or behind the retina. This includes hyperopia (farsightedness), myopia (nearsightedness), and astigmatism. For myopia treatment, light to moderate myopia can be corrected with appropriate concave lenses; in cases of hyperopia, if vision is normal and there are no subjective symptoms, no treatment is needed. However, if there are symptoms of visual fatigue, appropriate convex lenses should be used for correction; astigmatism requires the correction with cylindrical lenses.