Correlation of Axial Length and Corneal Radius of Curvature in Adult Indian Population

Titiyal, Jeewan

Correlation of Axial Length and Corneal Radius of Curvature in Adult Indian Population

Sunday, April 19, 2015: 1:16 PM

Room 4 (San Diego Convention Center)

Jeewan S. Titiyal, MD

Tarun Arora, MD

Rajesh Sinha, MD, FRCS

Purpose
To evaluate the correlation between axial length (AL) and corneal radius of curvature (CRC).

Methods
Patients (n= 1228) were categorized based on AL(mm) as normal(AL= 22- 24.5), hyperopes(AL= 21- 21.99 and AL< 21), myopes(AL= 24.5- 27 and AL> 27) and anisometropes(inter-eye difference>1). Correlation between AL and average keratometry were evaluated.

Results
A statistically significant inverse relationship was found between AL and CRC in normals (r= -0.55,p< 0.0001), myopes with AL<27(r= -0.41,p<0.0001) and hyperopes with AL> 21(r= -0.285,p=0.005). No correlation was seen in anisometropes.

Conclusion
Inverse correlation between AL and CRC demonstrates the eye’s ability to compensate for normal physiologically-driven axial length changes.