The study examined factors affecting the kappa angle in 715 cataract patients using biometric measurements. The kappa angle is an important parameter of the eye, which is measured in three components (chord mu, X and Y component). The researchers found that chord mu (one component of the kappa angle) was significantly correlated with anterior chamber depth, lens thickness, axial eye length, and other parameters. The main determinants of chord mu were the depth of the anterior chamber, the diameter of the cornea and the distance to the center of the iris. For the X component of the kappa angle, the determinants were the depth of the anterior chamber, the thickness of the lens, the axial length and the position of the center of the iris. The Y component of the kappa angle was influenced by patient gender, corneal diameter, and iris center position. The results of the study contribute to the understanding of how different biometric parameters affect the kappa angle in cataract patients.