Monthly Archives: May 2011 - Page 2

Features of Pterygium and its difference from pinguecula.

Pterygium and Pinguecula are two names which are so similar that we often make mistakes when either is asked.So let us differentiate. Pterygium Wing shaped fold of conjunctiva encroaching upon the cornea from either side of interpalpebral fissure Common in …

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Types of renal calculi and their properties.

Calcium Oxalate Calculus Most common renal calculi Hard and small Phosphate calculus Smooth, white and solitary. Triple phosphate calculus-Calcium Ammonium magnesium phosphate/struvite calculus. Staghorn calculus- When they fill all or most of renal pelvis. Seen in alkaline urine especially with …

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Physiology of respiration, respiratory centres, effects of transection of brainstem.

Human respiration is controlled by two mechanisms. Voluntary control Automatic control Voluntary control of respiration is by Cerebral cortex.Voluntary control is needed for respiration at one’s will as in whistling,singing etc. Automatic control of respiration is via the Pontomedullary centers …

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Nuclear and cytoplasmic inclusion bodies.

Intracytoplasmic Inclusion bodies Negri bodies – Rabies Guarneiri bodies – Vaccinia Bollinger bodies – Fowlpox Molluscum bodies -Molluscum Contagiosum Poschen bodies- Small Pox Nuclear inclusion bodies Cowdry type A – Herpes virus, yellow fever virus. Cowdry type B- Adenovirus.

Vision 2020:Right to sight

Vision 2020:Right to sight, is an internatioonal initiative started by WHO in 1999 along with Task force of International NGO’s. It aims at dealing with 5 major conditions which cause blindness. Cataract Childhood blindness Trachoma Refractive errors and low vision …

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