menu

 

 

 

 

Search PubMed:   

 

 

 

E-Table Gallery

 

E-table 1
Properties Asteroid hyalosis Synchysis scintillans
Age of onset Elderly Usually young
Laterality Usually unilateral Usually bilateral
Incidence Rare Extremely rare
Appearance Spherical white Highly refractile multicolored flat angular or discoid crystals
Mobility Moves with vitreous structures and returns to original position on eye movement Moves freely and falls to floor of vitreous due to gravity
Chemistry Calcium soaps Cholesterol crystal
Associated ocular pathology None (except DM in some cases) Secondary to other ocular disease or trauma
Vitreous status Normal Liquefied
Visual acuity Impaired Depending on underlying cause



E-table 2

Rose bengal
Fluorescein
Vital stain
Vital stain
Brownish crystal
Brownish crystal
Water soluble
Water soluble
Non-fluorescent
Fluorescent
Used as 0.5-1% drop
Generally used as strips,also used as 1-2% drop
Available in strips
Available in strips
Stains bright red Stains bright green
Examined under white light Examined under cobalt blue filter
Less chance of contamination
Contamination with pseudomonas is high
Stain desiccated tissue, mucin and debris of conjunctiva and cornea
Stains dead, degenerated and recently traumatized corneal tissue, erosions

 

E-Table 3
Corneal Degeneration corneal dystrophies
Corneal degenerations are usually unilateral with asymmetric lesions Dystrophies are bilateral symmetrical vascular lesions mostly in the central part of the cornea
Normal cells of a particular structure undergo some pathologic changes under some abnormal circumstances such as ageing, inflammation, trauma or systemic diseases. They are primary lesions, not related to any systemic or local disease process
Usually no inheritance pattern or genetic predis­position seen often inherited (usually autosomal dominant)
Onset of lesions usually occurs in the middle of life or later and are often progressive Dystrophies occur early in life and may remain stationary or progress slowly causing gradual loss of vision

 

E-table 4
Episcleritis

Scleritis
A superficial disease of episclerical tissue, generally a mild condition A deep, severe destructive disease of sclera
Redness is the main presentation Severe boring pain is the main presentation
minimal or no tenderness More tender nodule
Bright red in colour Purplish in colour
Only superficial oedema. Sclera appears thickened

No feature of uveitis present.
Feature of uveitis like KPs are present
Quick blanching of blood vessels No such blanching of blood vessels
No or minimal complications
complications like dimness of vision, scleral thinning, staphyloma and sometimes perforation may occur.

 

E Table 5 Goldman 3 mirror lens 64D

Smallest mirror
(Has an inclination of 59 Degree)

used to view
AC angle
+

Occasionally periphery of the fundus.

Medium sized mirror
(has an inclination of 67Degrees)

used to view
retinal periphery  ant to the equator

Largest mirror
(Has an inclination of 730)

used to view
area with in the equatorial
+ 
post equatorial region of fundus

 

 

E-table 6
Dystrophies Structures Affected Examples
Anterior Dystrophies Epithelial, Epithelial BM, Bowman’s Membrane
  1. Epithelial Basement Membrane dystrophy,
  2. Meesman Dystrophy,
  3. Reis-Buckler Dystrophy
Stromal Dystrophies Between Bowman’s Membrane & DM
  1. Lattice Dystrophy
  2. Granular Dystrophy
  3. Gelatinous Dystrophy
  4. Macular Dystrophy
  5. Avellino Dystrophy
  6. Crystalline Dystrophy
Posterior Dystrophies DM & endothelium
  1. Fuch’s Endothelial dystrophy
  2. Posterior Polymorphous dystrophy
  3. Congenital hereditary endothelial Dystrophy
Ectatic Dystrophy a group of disorders of corneal shape
  1. Keratoconus
  2. Keratoglobus
  3. Pellucid marginal Dystrophy

 

More E-Tables