Thread: Ophthalmology Clinical Viva

I'll Post All Here..

1. Which Test Is Done For Colour Vision In Mature Cataract Patient?

2. What's Imp. Of Detecting BloodSuger Level 1 day Before The Cataract Surgery?

color visionin mature catract??? if they hav some vision left.. i think there r some computer aided devices..

buti dont know much ophthal vitrag.. may b sm un wil answer..

2nd answer i know
answer of 1st que. even i dont know...my HOD asked me that in viva and tld if u will answer i'll give credit marks.

Damn..Even i have never heard of that...

so is the 2nd one (explained by dhaval) just a general one...not just applicable to cataract surgery..but all surgeries! Or is vitrag looking for something more specific for cataract surgery

Originally Posted by mgt9

so is the 2nd one (explained by dhaval) just a general one...not just applicable to cataract surgery..but all surgeries! Or is vitrag looking for something more specific for cataract surgery

This is answer to First one...

Color vision can be tested with an anomaloscope, in which a yellow light whose intensity may be varied is matched against red and green lights whose intensity is fixed...The Nagel Anomaloscope was first developed in the early 1900's. It is an instrument designed for clinical evaluation of those with abnormal color vision after the individuals have been identified using flash cards.

For more details about ANAMALOSCOPE follow this link..
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http://4colorvision.com/files/newnagel.htm
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I dont think that this should be done routinely..@ VITRAG as it is credit Question..It is okay......Otherwise what is important of knowing colour vision when there is no vision..First operate that patient and then check for colour visin..Ha...Ha..Ha..It is not the RFT-Retinal Function Test which must be carried out before any Cataract Surgery...





This is the specific answer for the Second one...

In diabetic patients, Following problems are seen during hte surgery if blood glucose is not controlled well....

- Pupil does not dilate readily..
- Delayed wound Healing..
- More Chances of Infection..
- Intraoperatively, there are more chances of Iris Pigment Exfoliation...

Some Details are as Follow..

Diabetes mellitus may affect any part of the visual system. Common ocular complications of diabetes include blepharoptosis which may resolve spontaneously, respond to topical phenylephrine or eventually require surgical correction.
Increased glucose content of the tears occurs in diabetes without any apparent structural abnormality.
Fusiform and saccular aneurysms are a common finding in the bulbar conjunctiva of diabetics, in individuals suffering from other diseases and in persons who are apparently healthy.
Decreased corneal sensitivity often with small epithelial pits and folds in Descemet's membrane are also common findings in diabetics.
Open angle glaucoma appears to have only a chance association with diabetes while diabetic iridopathy, changes in refractive power and cataract are more closely allied with abnormalities in carbohydrate metabolism.

Rubeosis iridis with secondary organization and occlusion of the aqueous humor outflow channels is one of the disastrous complications of diabetes mellitus.

Diabetic ophthalmoplegia, another poorly understood phenomenon, may falsely suggest the presence of intracranial aneurysm, tumor or other space occupying mass resulting in needless diagnostic tests.

The physician who manages diabetic patients should recognize these abnormalities, the fact that many are harmless and require no treatment, that some are easily treated by simple medical or surgical measures and that others are catastrophies for which no satisfactory therapy is at hand.

and one more thing.... in diabetic pt.. there r more chances of expulsive h'age..

can any one say vt is PL nd PR? and vt do they signify?

Originally Posted by rupu

can any one say vt is PL nd PR? and vt do they signify?

projection of light and perception of rays.
Read retinal function tests.