EYE am FINE

👁 Can Onion Juice Lower Blood Pressure? Why Clinical Trials MatterMany people turn to folk remedies like onion juice to manage conditions like hypertension.But before trusting such claims, it’s essential to understand the importance of clinical trials —the gold standard for verifying a treatment's effectiveness and safety.✅ What Is a Clinical Trial?‘Clinical’ comes from “bedside” — trials condu..

👁 What is ARK?ARK (AutoRefractor & Keratometer)AutoRefraction: Measures refractive errors (myopia, hyperopia, astigmatism)Keratometry: Measures corneal curvature➡️ Combined in a single automatic device📌 Standard tool in eye clinics📌 Fast, automated measurement: ~1 second × 3 trials → average result ⚠ Accuracy in Pediatrics: ARK vs Manual RefractionIn children (especially inaccurateGreater dis..

👁 Ocular Anatomy: Anterior vs Posterior SegmentThe human eye is structurally divided into two major parts:Anterior Segment and Posterior Segment,separated by the posterior lens capsule / anterior vitreous face.🔹 Anterior SegmentStructures:CorneaIrisCiliary bodyLensChambers:In front of the iris: Anterior chamberBehind the iris: Posterior chamberFluid:Aqueous humorFlow: Produced by ciliary body ..

👁 What is Central Corneal Thickness (CCT)?CCT refers to the thickness of the central cornea,playing a critical role in refractive surgery screening and intraocular pressure (IOP) correction in glaucoma patients.🔍 Clinical Importance of CCTRefractive Surgery PlanningDetermines suitability and surgical safetyOverestimated CCT → Risk of overcorrection or ectasiaUnderestimated CCT → Patient wrongl..

👁 Corneal Size & White-to-White (WTW) / Visible Iris Diameter (VID)The cornea makes up the anterior 1/6 of the eye,with a radius of approximately 8 mm, forming part of the eye's spherical structure.🔍 How is corneal size measured?From a front view, the horizontal distance from limbus to limbus (white sclera to white sclera)is termed White-to-White (WTW) or Visible Iris Diameter (VID).TermMeanin..

👁 What is Axial Length of the Eye?Axial Length (AXL) refers to the distance from the anterior corneal pole to the posterior scleral pole—essentially the front-to-back length of the eyeball. 🧬 Basic Eye AnatomyCornea (anterior 1/6):Radius: ~8mmSclera (posterior 5/6):Radius: ~12mmThe eye is a non-perfect sphere, composed of two fused spherical parts. 📏 Axial Length GrowthAgeAxial LengthAt bir..

👁 Ocular Surface Stains + Staining Score SystemsOphthalmic dyes likeFluorescein, Rose Bengal, and Lissamine Greenhelp visualize corneal and conjunctival damage in patients with dry eye and other surface disorders.🔍 Stain Color & Use SummaryDye NameColorUsed ForFluoresceinGreen (fluorescent)CorneaRose BengalPink/RedConjunctiva, devitalized cellsLissamine GreenGreenConjunctiva, dry eye assessmen..

👁 What is the SPEED Questionnaire?The SPEED (Standardized Patient Evaluation of Eye Dryness) is a self-assessment tooldesigned to measure symptoms of dry eye based on a patient's subjective experience.🔍 StructureThe SPEED test consists of 3 main components:Listing of symptoms (e.g., dryness, irritation, burning)Frequency ratingSeverity rating🧪 Scoring SystemFrequency (0 to 3 points per sympto..

👁 Common Ocular Surface Dyes in Eye ExaminationsIn ophthalmology, three major vital stains are used to assess the health of the corneal and conjunctival surfaces:🔸 Fluorescein🟢 Appears green under cobalt blue light🔶 The solution itself is orange-colored🧪 Used primarily to highlight corneal epithelial defects✅ Most common and essential in corneal staining 🔸 Rose Bengal🌺 A red dye, reminisc..