Lens Flashcards
Vacuoles, clefts and Wedges seen with this type of cataract.
Cortical
This type of cataract is common with uveitis, RP and trauma
Posterior subcapsular
Complete opacification &Lens starts to swell
Advanced - mature
Complete liquefaction of the cortex
Hyper mature- morgagnian
What type of cataract caused from these systemic diseases? Diabetes Galactosemia Wilson’s disease Atopic dermatitis Steroids Miotics Chloroquine Amiodarone
Anterior/posterior sub capsular
From Anterior segment ischemia, what type of cataract is caused?
Nuclear s.
UV-B causes……..
Cortical cataract
lens-particle glaucoma
immediate post op 3 days. Cortex material. Physical blockage of AC. Effecting the outflow. Snow balls in AC.
Lens-induced Ocular Disease
phacolytic glaucoma (Leakage of lens proteins)
lens-particle glaucoma
phacoanaphylaxis (rxn to lens antigens)
Significant concerns from surgery
NVG, Chronic uveitis, Blind eye, decreased endothelial cell count
Moderate concerns
Mono.pt., Diabetic retinopathy, POAG, and previous RD
Advanced Cataract Evaluation
-B-scan
-Macular/Retinal Function. . .
Entoptic images
80% report + finding
-Maddox rod
-Endothelial Cell Count
A-scan
Types of Surgery
- Intracapsular Cataract Extraction (ICCE)
- Extracapsular Cataract Extraction (ECCE)
Extracapsular Cataract Extraction (ECCE)
Planned ECCE
Phacoemulsification
ECCE – phacoemulsification
May cause more endothelial damage
common
heals fast
on what type of IOL, you cant dilate patient
clipped IOL on iris
Types of IOL’s
Iris Clip anterior chamber Post Chamber (most common) Apodized Diffractive IOL – ReStor ReZoom – Multifocal IOL Crystalens
Crystalens IOL
Designed to mimic the eyes natural ability to focus on distance, intermediate and near objects.
“Hinges” – to change focus from dist /near
Complication = “Vaulting”
High amounts of astigmatism is contraindication for what type of IOL
ReZoom – Multifocal IOL
Early post-op complications
Conjunctiva Seidel’s sign Corneal edema Hypotony/Flat AC Anterior Chamber-Hyphema Endophthalmitis Iris Atrophy Iris prolapse
Endophthalmitis
Serious intraocular bacterial infection that occurs within 2-3 days post-op.
Late complications
Bullous Keratopathy Rebound Iritis Posterior Capsular Opacification Windshield wiper syndrome Uveitis-glaucoma-hyphema syndrome CME RD
More common with ICCE than with ECCE
CME & RD
Most common in first 3 years following surgery
RD
Types of cataracts effecting vision
Coraliform
Sutural ( if posterior )
Types of cataracts unlikely effect vision
Anterior polar
Lamellar
Cerulean
Cataracts with blue dots
Sutural
Cerulean
