User:14tcm1/sandbox

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This is place to practice clicking the "edit" button and practice adding references (via the citation button). Please see Help:My_sandbox or contact User_talk:JenOttawa with any questions.

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 * Note: Please use your sandbox to submit assignment # 3 by pasting it below. When uploading your improvements to the article talk page please share your exact proposed edit (not the full assignment 3).


 * Talk Page Template: CARL Medical Editing Initiative/Fall 2019/Talk Page Template

Central Retinal Artery Occlusion

Assignment 2
Citations:

Hayreh S. S. (2018). Central retinal artery occlusion. Indian journal of ophthalmology, 66(12), 1684–1694. doi:10.4103/ijo.IJO_1446_18

https://emedicine.medscape.com/article/1223625-workup#c5

Answers to questions:

1) How you searched for a source (search strategy – where you went to find it).

Search strategy for resource 1

When using PubMed as a method of finding a resource my search strategy generated 11 results, unfortunately within these 11 articles only a fraction contained information on the diagnosis of CRAO using angiography. Additionally this review article is recent within two years. Though the article is very specific to this topic, the Indian journal of ophthalmology has an impact factor of 1.019, which is less than what I would hope for for a research.

The first reason this is an acceptable source for wikipedia is it is a review which means it is not a primary resource. Next, the second reason this is an acceptable source is it was published within the 7 years, making it recent enough to use for wikipedia. Finally, the author of this review has published multiple other reviews on ophthalmology topics which have been published in a variety of scientific journals. I believe this provides sufficient evidence for the content in this review to be of a high enough quality to reference on Wikipedia even though the journal that this review was published in has a low impact factor.

Search strategy for resource 2

A search of “central retinal artery occlusion diagnosis on medscape”. I believe this is an appropriate resource because it was last updated in June of 2019, meaning it is recent enough. It is also appropriate to use because it comes from a major medical authority. Lastly, it is a secondary resource, so it is appropriate to use on wikipedia.

Proposed Changes
One diagnostic method for the confirmation of CRAO is Fluorescein angiography, it is used to examine the retinal artery filling time after the fluorescein dye is injected into the peripheral venous system. In an eye with CRAO the time it takes for the branches of the retinal artery to fill will be increased, this is visualized by the leading edge of the fluorescein moving slower than normal through the retinal artery branches to the edges of the retina. Fluorescein angiography can also be used to determine the extent of the occlusion as well as classify it into one of four types non-arteritic CRAO, non-arteritic CRAO with cilioretinal artery sparing, transient non-arteritic CRAO and arteritic CRAO.

* a picture of fluorescein angiography provided by Dr. Sanjay Sharma will also be included in this change

Rationale for Proposed Changes
This change is part of the addition of the new "diagnosis" section. The article currently lacks a diagnosis section which is often present on the Wikipedia pages of other diseases and disorders. I chose to focus my addition on fluorescein angiography specifically because it is a technique that is well established and is considered the gold standard of diagnosis of CRAO.

It is possible that there is varied opinion on what the best method of diagnosis is for CRAO. To address this another one of my group members will be writing about alternate methods of diagnosis.

Critique of Source
I believe my first source is very appropriate for this section. The paper does follow the criteria for Wikipedia sources, mainly it is a review paper that is less than five years old. One critique of this source is that this paper was published in a journal that has a low impact factor (1.019). However, the author of this paper, Sohan Hayreh, is considered to be one of the pioneers of fluorescein angiography and an expert in the field of ophthalmology. Dr. Hayreh's personal involvement in the creation of this method, may mean that this paper is bias towards other diagnostic methods.

My second source comes from Medscape and is also appropriate to use for Wikipedia as it is a major medical authority. Though this information was initially published many years ago, the CRAO page was last updated in June of 2019, meaning this source is being kept up to date. I am unable to identify any sources of bias with this source.