Which Substance Is Used Following Vitrectomy for Long-Term Support of the Retina

question 39

Multiple Choice

Which substance is used following vitrectomy for long-term support of the retina with fewer restrictions on position?

• A) BSS
• B) silicone oil
• C) hydroxyapatite
• D) perfluoropropane

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Definitions:

Observed Frequencies

The number of times a particular value or event actually occurs in a dataset.

Expected Frequencies

In statistical analysis, these refer to the counts predicted by a probability model or theoretical distribution, used in the comparison of observed data for goodness-of-fit tests.

Contingency Table

A table often used in statistics to show the frequency distribution of variables, helping in the analysis of the relationship between them.

Equality Of Variances

A statistical condition in which two or more groups have the same variance, often an assumption in certain tests of significance.