tag:blogger.com,1999:blog-17106534594143148812024-09-14T00:01:42.107+03:00Multiple choice questions covering all aspects of Clinical Ophthalmology: questions and detailed answers..Shehab Al-Abedhttp://www.blogger.com/profile/10639705588059962742noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-1710653459414314881.post-11642356457013982962011-10-26T09:16:00.000+03:002011-10-26T13:09:08.303+03:00<b><span class="Apple-style-span" style="color: red;">QUESTIONS</span></b><br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html" name="q1"></a> <b>1. Rosette cataract is seen due to:</b> <blockquote class="tr_bq"> a) Trauma<br /> b) Foreign&nbsp;body<br /> c) Diabetes<br /> d) Hyperparathyroidism</blockquote> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html#ans1" target="_self">Check Answer</a> <br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html" name="q2"></a> <b>2. Cataract is seen with:</b> <blockquote class="tr_bq"> a) Galactosemia<br /> b) Congenital Rubella<br /> c) Toxoplasmosis<br /> d) All of the above</blockquote> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html#ans2" target="_self">Check Answer</a> <br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html" name="q3"></a> <b>3. The lens derives its nutrition from:</b> <blockquote class="tr_bq"> a) Aqueous<br /> b) Sclera<br /> c) Vitreous<br /> d) None of the above</blockquote> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html#ans3" target="_self">Check Answer</a> <br /> <hr /> <b><span class="Apple-style-span" style="color: red;">ANSWERS</span></b><br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html" name="ans1"></a> <b>1. (a) Trauma</b> <br /> Direct mechanical effects of injury on lens fibers that could be:<br /> <br /> <ol style="text-align: left;"> <li>Discrete subepithelial&nbsp;opacities.</li> <li>Early Rossette (flower) cataract: feathery lines of opacity along star shaped suture lines usually in posterior cortex.</li> <li>Late Rossette cataract: it develops in posterior cortex 1 to 2 years after injury.</li> </ol> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html#q1" target="_self">Back To Question</a> <br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html" name="ans2"></a> <b>2. (d) All of the above</b><br /> Causes of cataract include all but not exclusive to:<br /> <br /> <ol style="text-align: left;"> <li>Hereditary causes: e.g. Cataracta Pulveranta, Coronary cataract</li> <li>Maternal&nbsp;causes:</li> <ul> <li>Infections e.g. Rubella and Toxoplasmosis</li> <li>Drug ingestion: corticosteriod</li> <li>Radiation</li> </ul> <li>Fetal&nbsp;causes:&nbsp;</li> <ul> <li>Metabolic Disorder: e.g. Galactosemia and galactose kinase deficiency</li> <li>Oxygen&nbsp;deficiency</li> </ul> <li>Idiopathic</li> </ol> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html#q2" target="_self">Back To Question</a> <br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html" name="ans3"></a> <b>3. (a) Aqueous</b><br /> Crystalline lens being an avascular structure is dependent on aqueous humor for its nutrition. <br /> <a href="http://ophthalmologymcqbank.blogspot.com/2011/10/cataract-mcq-part-1.html#q3" target="_self">Back To Question</a> <br />Shehab Al-Abedhttp://www.blogger.com/profile/10639705588059962742noreply@blogger.com0