Keratitis

Several factors can elevate the likelihood of developing keratitis, including:

Contact Lenses

Wearing contact lenses heightens the risk of both infectious and non-infectious keratitis, particularly in the following situations:

• Sleeping while wearing lenses
• Using extended-wear contact lenses
• Improperly disinfecting lenses
• Neglecting to clean the lens case
• Using contaminated solutions to clean lenses
• Failing to replace used solution with fresh solution in storage cases
• Mixing fresh solution with previously used solution
• Rinsing or storing lenses with water
• Swimming or bathing with lenses on
• Sharing non-corrective cosmetic lenses

Eye Trauma

Previous eye injuries, such as scratches, tears, or other trauma, can increase susceptibility to keratitis.

Weakened Immune System

Individuals with compromised immunity due to underlying conditions or medications are at higher risk of keratitis.

Corticosteroids

Prolonged or excessive use of corticosteroid eye drops to manage eye conditions may heighten the risk of infectious keratitis or exacerbate existing cases.

Exposure to Intense Light

Prolonged exposure to intense natural sunlight, such as reflected sunlight from snow, water, ice, or sand, can contribute to keratitis. Staring directly at the sun without eye protection can also be harmful. Additionally, artificial UV light sources like tanning lamps and tanning beds can trigger photokeratitis.

If keratitis is suspected, it is crucial to seek medical attention promptly to prevent further complications. The diagnostic process includes:

Eye Examination

A thorough eye exam is conducted to assess visual acuity and check for signs of infection.

Slit-Lamp Examination

This diagnostic procedure, also known as biomicroscopy, utilizes a magnified light source to evaluate the nature and severity of keratitis and its impact on the eye’s structures.

Penlight Examination

A penlight is used to check for pupil irregularities. A dye may be applied to the eye to detect corneal surface abnormalities and ulcerations.

Laboratory Testing

A sample of tears or a corneal scraping may be collected for laboratory analysis to identify the cause of keratitis and aid in determining the appropriate treatment plan.

Although keratitis can develop in anyone, certain measures can help minimize the risk:

Contact Lens Care

• Follow your eye doctor’s instructions on wearing, cleaning, and replacing contact lenses.
• Wash and dry hands thoroughly before handling lenses.
• Replace contact lens cases every three to six months.
• Use only sterile solutions designed for contact lens care.
• Discard used solution after each disinfection cycle.
• Gently rub lenses during cleaning to avoid damage.
• Avoid wearing lenses while sleeping, bathing, or swimming.
• Never share cosmetic or colored contact lenses.
• Schedule regular eye checkups.

Protecting Your Eyes

Keratitis can also occur in non-contact lens wearers. Protect your eyes by:

• Wearing sunglasses to shield against intense sunlight.
• Using protective eyewear when performing agricultural work.
• Identifying and avoiding allergens when possible.
• Maintaining a diet rich in vitamin A.

Preventing Viral Keratitis

While some forms of viral keratitis cannot be entirely prevented, the following steps can reduce risk:

• Refrain from touching your eyes with unclean hands.
• Wash hands frequently with antiseptic soap.
• Use only doctor-prescribed eye drops.

Specialist Consultation

An ophthalmologist, a physician specializing in eye diseases and surgeries, conducts keratitis diagnosis. A detailed medical history and physical examination of the eyes are recorded, with additional lab tests or cultures recommended if necessary.

Infectious Keratitis

Infectious keratitis is a leading cause of preventable blindness, making early and appropriate treatment essential to reducing complications.

Bacterial Keratitis

• As bacterial keratitis progresses rapidly, prompt antibiotic treatment is crucial.
• A combination of antibiotics like cefazolin and tobramycin or gentamicin is commonly used.
• Methicillin-resistant Staphylococcus aureus (MRSA) infections may require topical vancomycin or linezolid.
• Aminoglycosides such as gentamicin and tobramycin are often applied as fortified eye drops.
• Cephalosporins like cefazolin are also employed.
• Amikacin is effective for gram-negative bacteria resistant to other aminoglycosides.

Protozoal Keratitis

• Early diagnosis is vital for treating Acanthamoeba keratitis, as it is challenging to manage due to its cystic form.
• Treatment often involves topical cationic antiseptics such as biguanides (e.g., polyhexamethylene biguanide [PHMB] and chlorhexidine) or pentamidine.
• Levofloxacin may be added for resistant cases.

Viral Keratitis

• Topical acyclovir is the standard treatment for viral keratitis.
• Corticosteroids may be prescribed in specific cases.
• Herpes simplex virus infections are typically managed with topical steroids.
• Herpes zoster keratitis is treated with oral acyclovir to prevent recurrence.

Fungal Keratitis

• Treatment depends on the fungal strain:
• Amphotericin B is effective against Aspergillus and Candida species.
• Natamycin is the first-line treatment for Fusarium and Aspergillus infections.
• Fluconazole is used when natamycin or miconazole fails, particularly for Candida keratitis.
• Ketoconazole is effective against Aspergillus, Candida, and Curvularia species.
• In severe cases where medication proves ineffective, a corneal transplant may be necessary.

Non-Infectious Keratitis

Treatment varies based on severity:

Local Causes

• Keratitis related to trichiatic lashes, entropion, or distichiasis requires early correction through electrolysis, lid eversion, or lid-splitting procedures.
• Giant papillary keratitis is managed with topical steroids, cyclosporine, and lubricants.

Systemic Causes

• Rheumatoid arthritis (RA): Managed with topical and oral steroids, as well as methotrexate.
• Granulomatosis with polyangiitis (GPA): Treated with cyclophosphamide along with topical and oral steroids.

Prompt treatment can facilitate a quick recovery from keratitis. However, if left untreated, it may lead to serious complications, including:

Corneal Scarring

• Infections, injuries, or degenerative conditions may cause corneal scarring, potentially leading to partial or complete vision impairment.

Chronic Inflammation

• Since keratitis affects the cornea, the complications vary depending on the depth of inflammation. If the middle layer of the cornea (stroma) is affected, scarring may occur, sometimes resolving on its own over time. However, inflammation reaching the innermost corneal layer (endothelium) can cause long-term vision problems.

Corneal Ulcers

• Prolonged corneal inflammation and scarring can trigger recurrent viral infections, which may result in corneal ulcers. These open sores can contribute to temporary or permanent vision reduction.

Recurring Infections

• If keratitis remains untreated for an extended period, the likelihood of recurrent infections increases. The condition can occur with or without an infectious agent.

Glaucoma

• In rare cases, keratitis may lead to glaucoma—a condition that damages the optic nerve, sometimes accompanied by increased eye pressure—potentially causing gradual vision loss.

Vision Loss

• While most cases of keratitis can be treated effectively, severe infections may lead to complications that cause irreversible damage to vision.

Homeopathic Remedies for Keratitis

Homeopathic treatments can serve as complementary support for keratitis, working alongside conventional medicine to help relieve symptoms such as burning, discomfort, and discharge. Below are some commonly used homeopathic remedies:

• Belladonna – Derived from the deadly nightshade plant, this remedy is frequently recommended for eye conditions involving redness and congestion.
• Apis Mellifica – Known for addressing pain associated with keratitis, Apis Mellifica is especially effective for sharp, stinging, or tearing sensations in the eyes.
• Euphrasia – Also called Eye-bright, this homeopathic remedy is beneficial for keratitis cases involving excessive tearing and sensitivity to light.
• Pulsatilla – Made from the Pulsatilla Nigricans plant, this remedy is useful for eye discharges, irritation, and sticky eyelids, particularly in the morning.

With timely diagnosis and suitable treatment, including regular follow-ups, keratitis can typically be managed without resulting in lasting vision problems. It is advisable to undergo periodic eye evaluations with a general physician if you experience any concerning eye-related symptoms. Depending on the severity of your condition, your doctor may recommend a consultation with an ophthalmologist.

For individuals who wear contact lenses, it is essential to remove them immediately if the eyes become red or irritated. Avoid rubbing or touching your eyes, as this can increase the risk of infection. Using lubricating eye drops can help alleviate discomfort associated with keratitis.

It is crucial to adhere to your healthcare provider’s instructions regarding the proper use, cleaning, and storage of contact lenses. Always wash your hands thoroughly before handling your lenses, and ensure they are removed before sleeping or swimming.

In cases of viral infections, hand hygiene is particularly important. Always wash your hands with an antiseptic solution before touching your eyes.

Seek immediate medical attention from an eye specialist if you experience symptoms such as eye redness, pain, or blurred vision.