Showing posts with label cornea mcqs. Show all posts
Showing posts with label cornea mcqs. Show all posts

Saturday, October 10, 2009

282 - PGI Chandigarh December 2007 Mcqs with answers part 5

24. The following are true about Optic disc ?

a. Forms an absolute scotoma in the eye field
b. Optic disc measures vertically 1.84 mm and horizontally 1.76 mm
c. Approximately 1 million nerve fiber
d. Supplied by central retinal artery
e. Fovea centralis situated nasally to disc



25. True about adult cornea ?

a. Diameter is 10 mm
b. Diameter is 12 mm
c. Diameter is 14 mm
d. Vertically it is about 1 mm more than transverse
e. Microcornea - diameter less than 10 mm



26. Soft exudates are found in ?

a. DM
b. HTN
c. Toxemia
d. Coat's disease
e. All



27. First retinal abnormality in diabetic retinopathy ?

a. Microaneurysm
b. Hard exudates
c. Soft exudates
d. Cotton wool spots



28. Bull's eye lesion is due to toxicity of ?

a. Chloroquine
b. Ethambutol
c. Chlorpromazine
d. Dapsone
e. Tamoxifen



29. Pigment deposition on cornea is seen in ?

a. Chloroquine
b. Digoxin
c. Ranitidine
d. Amiodarone



30. Regarding colour blindness, true is ?

a. Mainly congenital
b. Can be tested with Fansworth100 hue test
c. Isihara chart tests red/green color blindness
d. Jerlin-Merlin cotton wool tests it



31. Medial wall of orbit formed by ?

a. Body of sphenoid
b. Lesser wing of sphenoid
c. Greater wing of sphenoid
d. Frontal process of maxilla
e. Anterior and posterior ethmoid canals



32. Retinal detachment seen in ?

a. Myopia
b. Hypermetropia
c. Eale's disease
d. Cataract extraction
e. Nd Yag photocoagulation



33. Ocular manifestations in AIDS ?

a. Kaposi sarcoma
b. Retinitis
c. Lymphoma
d. Tuberculosis
e. Herpes


Thursday, August 13, 2009

277 - Random Mcqs from various Medical PG entrance tests part 9

41q: Methotrexate is used in all except ?


a. choriocarcinoma
b. rheumatoid arthritis
c. psoriasis
d. osteoarthritis




Actually it is used in all the above conditions...but the best answer here will be osteoarthritis coz methotrexate is used only in a subset of patients with Erosive form of osteo which is not responding to standard line of managment....as such methotrexate isnt indicated in osteoarithritis..


Methotrxate is considered to be DOC in case of psoriatic arthropathy though nowdays Etanarecept is increasingly being used.


Choriocarcinoma is one of the tumors that is most sensitive to chemotherapy. The cure rate, even for metastatic choriocarcinoma, is around 90-95%. Virtually everyone without metastases can be cured; however, metastatic disease to the kidneys and/or brain is usually fatal. At present, treatment with single-agent methotrexate or actinomycin D is recommended for low-risk disease, while intense combination regimens including EMACO (etoposide, methotrexate, actinomycin D, cyclosphosphamide and oncovin) are recommended for intermediate or high-risk disease.


and obviously methotrexate is one of the DMARDs for RA...


42q: this layer of cornea has no regenerative capacity-


a. stroma/bowmans capsule
b. endothelium
c. epithelium
d. descemets membrane




This is the best answer here . Actually the Corneal Endothelium is a misnomer..its isn't the actual endothelium that we know of, it isnt bathed by blood or lymph and its origin are completely different.
Unlike Corneal epithelium.. the corneal endothelium cells do not regenerate...instead they stretch to accomadate the dead cells.....this has certain effect on the fluid balance of the stroma.


If there was no bowmans membrane along wid stroma, i would have been tempted to mark that too as its just a condensation of collagen fibres with no keratinocytes.
You might argue that even corneal stromal layer is aggregation of collagen fibres, but it does have kertainocytes interpresed in between the parallely arranged collagen fibres.


Hence the best answer here would be Corneal Endothelium according to best of my knowledge..

Wednesday, July 1, 2009

267 - PGI chandigarh june 2009 mcqs with answers part 6

31q: What are the causes of corneal neovascularisation ?

a. contact lens
b. eales disease
c. DM
d. CRVO
e. chemical burn


32q: Which of the following are true about Retinoblastoma ?

a. leucocoria is the most common presentation
b. always unilateral
c. there may be a family history
d. most common age group involved is 2-3 years
e. enucleation is the only treatment


33q: treatment of diabetic retinopathy is ?

a. LASIK
b. Anti VEGF antibody
c. para plana vitrectomy
d. phacoemulsion
e. retinal laser photocoagulation


34q: which of the following are true about active transport ?

a. require energy
b. require carrier
c. non saturated
d. along concentration


35q: which of the following is true about PCR ?

a. specific
b. thermostable enzyme
c. it produces blunt ends
d. oligonucleotide determines site

Thursday, March 26, 2009

180 - comedk january 2008 paper mcqs with answers part 26


126q: the first line of treatment of open angle glaucoma is ?

a. timolol
b. pilocarpine
c. epinephrine
d. carbonic anhydrase inhibitor


127q: the following bacteria can invade intact corneal epithelium except ?

a. neisseria gonorrhea
b. haemophilus influenzae
c. staphylococcus aureus
d. listeria species


128q: duffy blood group antigen negativity confers protection against infection by ?

a. plasmodium falciparum
b. plasmodium ovale
c. plasmodium vivax
d. plasmodium malariae


129q: in a 6 year old child with burns involving the whole of head and trunk , the estimated body surface area of burns is ?

a. 44 %
b. 52 %
c. 55 %
d. 58 %


130q: most common medial meniscal tear is ?

a. longitudinal tear
b. oblique tear
c. radical tear
d. horizontal tear


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