C-Arm equipment is commonly used for three-dimensional patient imaging in real time using fluoroscopy techniques. This study aims to evaluate the effective dose of eye lens received by radiation workers during cardiac catheterization. The main tool uses the C-Arm equipment and the calibrated TLD detector chip. The object of observation is the eye lens of radiation workers consisting of one radiologist and one nurse. Catheterization was carried out to 10 patients with different examination times. As the observation results, for the eye lens without protective glasses; the average effective doses received by medical doctors and the nurse for a single imaging are, respectively in the ranges of 0.0011 and 0.0054 mSv, and in the ranges of 0.0010 mSv and 0.0025 mSv, or about 0.0037 mSv/h - 0.0135 mSv/h for the medical doctors and about 0.0027- 0.00830 mSv/h for the nurse. Estimated dose received by medical doctors and nurse are, respectively, in the range of 0.0037 - 0.0135 mSv/h and 0.0027-0.0083 mSv/h