sigma sinusmedii

Abstract— Optical measurement of straylight in the human eye is a challenging task. Issues such as illumination geometry, detector sensitivity and dynamic range as well as various inherent artifacts must be addressed. We developed a novel instrument based on the principle of double-pass optical integration adapted for fast measurements in a clinical setting. The experimental setup was validated using four different diffusers introduced in front of the eyes of ten subjects. Measurement limitations and future implications of rapid optical measurement of straylight in ophthalmic diagnosis are discussed.

Abstract— A mechatronic system designed for automated corneal cross linking treatment on keratoconus patients is introduced. Keratoconus is a serious illness if not treated may cause serious distortion of vision. Regular treatment of this disease is performed manually. Developed automated system aims to increase the efficiency in treatment and to eliminate any potential side effects and risks of the treatment. The system consists of an image processing algorithm developed on OpenCV sharp, a servomechanism system consisting of various mechanical, electronic components to track the eye of the patient, and a digital PID controller to eliminate any errors.

Abstract— In this project, we proposed a laser guided robot able to follow the reflection of a spot from a laser light. A laser light source generates light in the frequency range between 30 KHz and 60 KHz. While the detection system is immune from sun light, by taking the advantage of an modulated laser light, the prototype system was experimented under various environmental conditions. The detection area was limited for 10 cm circular path. Because of the high sensitivity Hamamatsu, S1223- 01 silicon PIN photodiode is used. The detection circuit transfers position information of the laser light to the computer via RF transmitters. The control algorithm runs in a computer and decides the direction of the robot and returns the motion information back to the robot via another transmitter. Mainly, action of steers was achieved by the data from sensor units located at four sides of the robot.