
Pseudomonas aeruginosa is the most common Gram-negative pathogen responsible for infectious keratitis, especially in contact lens wearers and immunocompromised patients.Its rapid progression and necrotizing purulent infiltration make early diagnosis and aggressive treatment essential.🔹 Clinical Features & ProgressionRapidly progressing stromal melting, with purulent dischargeMay result in ring-..

👁 “Streptococcal Keratitis – From Ulcer Serpens to Crystalline Keratopathy”Streptococcus species, particularly S. pneumoniae and S. viridans,are known to cause distinctive forms of bacterial keratitis, includingthe classic serpiginous ulcers and the more indolent infectious crystalline keratopathy (ICK).🦠 Summary Table of Streptococcal KeratitisOrganismClinical FeaturesS. pneumoniae – Starts a..

Staphylococcus species are the most common causative bacteria of microbial keratitis in South Korea. This article reviews the classification, clinical manifestations, prognosis, and rising antibiotic resistance among staphylococcal infections.🔹 Key Clinical InsightsClassificationCoagulase-positive: Staphylococcus aureusCoagulase-negative: Staphylococcus epidermidis, othersS. aureus KeratitisRis..

👁 “Bacterial Keratitis – A Sight-Threatening Ocular Emergency”Bacterial keratitis is a sight-threatening corneal infection, particularly concerning in contact lens users or those with prior ocular trauma or surgery.Modern antibiotics have reduced systemic infections, but corneal ulcers remain a major cause of irreversible vision loss.🧠 Risk Factors for Bacterial KeratitisCategoryRisk DetailsTr..

Dry eye disease results from either reduced tear production or instability of the tear film. Accurate diagnosis requires a combination of quantitative and qualitative tests to assess tear volume, tear film stability, lipid layer quality, and ocular surface integrity.This post summarizes the 9 major clinical diagnostic tools used in dry eye evaluation.🔹 Key Diagnostic CategoriesSlit-lamp Microsc..

✅ Detailed Overview of the Conjunctiva – Structure, Physiology, and Clinical SignificanceThe conjunctiva is a transparent mucous membrane covering the anterior surface of the eye and the inner eyelid, playing a central role in tear film stabilization, ocular surface immunity, and lubrication.🔹 1. Anatomical SubdivisionsThe conjunctiva is not a homogenous layer—it is subdivided by anatomical reg..

👁 “Corneal Nerve Distribution – From Trigeminal Roots to Subbasal Plexus”The cornea is the most densely innervated tissue in the human body.Its sensory innervation originates from the trigeminal nerve (CN V), specifically the ophthalmic division (CN V1),which branches into the nasociliary nerve, then further into the long ciliary nerves, ultimately reaching the cornea.🧠 Pathway of Sensory Inne..

🔹 1. Corneal StromaComprising 90% of total corneal thickness, it is made mostly of regularly aligned collagen lamellae and a sparse population of stromal keratocytes.Keratocytes help with collagen turnover and wound healing.These cells are interconnected via gap junctions, even across layers, enabling coordinated inflammatory responses during injury.🔹 2. Descemet’s MembraneA dual-layered basem..

👁 Coats' Disease – A Progressive Pediatric Retinal Vascular DisorderCoats' disease is a rare, typically unilateral pediatric retinal disordercharacterized by retinal telangiectasia, lipid exudation, and exudative retinal detachment.It most commonly presents in young boys ( and may lead to vision loss or enucleation.✅ Clinical SummaryFeatureDescriptionOnsetMean age ~5 years, 75% maleEye Involvem..