전체 글34 👁 Modern Cataract Surgery: Phacoemulsification & IOL Insertion, Corneal incision, CCC, capsular tear 👁 Modern Cataract Surgery: Phacoemulsification & IOL InsertionThe current standard method for cataract surgery isphacoemulsification followed by posterior chamber intraocular lens (IOL) implantation.Though femtosecond laser is occasionally used, ultrasound remains central to cataract removal. 🧬 Key Surgical Steps (Simplified)Corneal IncisionCreates an entry point for surgical toolsCCC (Contin.. 2025. 4. 19. Cataract Surgery & Lens Anatomy Explained, lens capsule, zonule 👁 Cataract Surgery & Lens Anatomy ExplainedModern cataract surgery typically uses phacoemulsification with intraocular lens (IOL) implantation,a method first introduced by Kelman in 1967.📌 Surgical Goal EvolutionTransitioned from restoring cloudy vision to achieving→ better refractive outcomes→ fewer surgical complicationsBut complications like posterior capsule rupture, iris prolapse, radial .. 2025. 4. 19. Cataracts: Causes and Antioxidant Eye Drops 👁 Cataracts: Causes and Antioxidant Eye DropsCataracts remain the leading cause of blindness worldwide,accounting for nearly 48% of all blindness cases.While surgery is well-established, pharmacological prevention or delay is still under-researched.🔍 Key Risk FactorsAging, diabetes, UV exposure, malnutrition, smoking, renal diseaseMost importantly: Oxidative Stress→ Free radicals damage lens p.. 2025. 4. 19. 👁 What is Central Corneal Thickness (CCT)? 👁 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.. 2025. 4. 19. Corneal Size & White-to-White (WTW) / Visible Iris Diameter (VID) 👁 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.. 2025. 4. 19. Axial Length of the Eye?, AXL, IOL master? A-scan, ultrascan 👁 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.. 2025. 4. 19. Ocular Surface Stains + Staining Score Systems 👁 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.. 2025. 4. 19. SPEED Questionnaire, dry eye symptom, Standardized Patient Evaluation of Eye Dryness 👁 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.. 2025. 4. 19. Common Ocular Surface Dyes in Eye Examinations 👁 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.. 2025. 4. 19. Prev 1 2 3 4 Next
