@article{Sarwar_Arslan Ashraf_Muhammad Arbab Azeem_Faisal Mehmood_Sobia Yousaf_2022, title={Correlation and Comparison of Anterior and Posterior Corneal Surface Parameters in Healthy Eyes: Doi: 10.36351/pjo.v38i3.1380}, volume={38}, url={https://pjo.org.pk/index.php/pjo/article/view/1380}, DOI={10.36351/pjo.v38i3.1380}, abstractNote={<p><strong>Purpose: </strong>To correlate and compare anterior and posterior corneal surface parameters like K<sub>flat</sub>, K<sub>steep</sub>, K<sub>avg</sub>, R<sub>1</sub>, R<sub>2</sub>, R<sub>avg</sub> and astigmatism in healthy eyes.</p> <p><strong>Study Design: </strong>Descriptive correlational study</p> <p><strong>Place and Duration of Study:</strong> This study was conducted at Mayo Hospital, Lahore from June 2020 to Dec 2020..</p> <p><strong>Methods:</strong> This study included 176 subjects (86 males and 90 females) with mean age of 28.06±9.68 and 28.13±8.24 respectively. The data was collected through non-random convenient sampling technique by self-made proforma after taking patients’ consent. Anterior and posterior corneal parameters (K<sub>flat</sub>, K<sub>steep</sub>, K<sub>avg</sub>, R<sub>1</sub>, R<sub>2</sub>, R<sub>avg</sub> and astigmatism) were measured with GALILEI G4. Pearson correlation test was used for correlation and independent sample t-test / Mann-Whitney U test was used for comparing means of anterior and posterior corneal parameters. Data was entered and analyzed in SPSS-21.</p> <p><strong>Results: </strong>Mean of anterior and posterior corneal curvatures was 44.21±1.01 D and -6.22±0.19 D[p<0.001], K<sub>flat</sub> was 43.76±0.99 D and -6.08±0.19 D [p<0.001] and K<sub>steep</sub> was 44.66±1.08 D, -6.34±0.21 D, respectively [p<0.001]. The anterior and posterior corneal curvature R<sub>avg</sub> was 7.63±0.17 mm, 6.44±0.200 mm [p<0.001], mean R1 was 7.71±0.17 mm, 6.58±0.21 mm, [p<0.001] and mean R2 was 7.56±0.18 mm, 6.31±0.21 mm, respectively [p<0.001]. Anterior posterior corneal astigmatism was 0.90±0.55 D and -0.25±0.11 D, respectively [p<0.001].Anterior corneal parameters also show strong correlation with posterior corneal parameters.</p> <p><strong>Conclusion</strong>: There are significant difference between corneal parameters of anterior and posterior surface. Strong correlation was also found in anterior and posterior corneal parameters except corneal astigmatism.</p>}, number={3}, journal={Pakistan Journal of Ophthalmology}, author={Sarwar, Muhammad Suhail and Arslan Ashraf, Muhammad and Muhammad Arbab Azeem and Faisal Mehmood and Sobia Yousaf}, year={2022}, month={Jul.} }