A laser system includes a laser source that emits a laser beam along an axis and a corneal astigmeter.The corneal astigmeter comprises a first group of independent light sources equidistant from each other along the first ring and directing the first beam to the eye, and a second group of independent light sources equidistant from each other along the second ring and directing the second beam to the eye, wherein the first ring and the second ring are coplanar and concentric about the axis.The laser system includes a telecentric lens that receives the first and second beams reflected by the eye, and a detector that receives light emitted by the telecentric lens and forms an image.The laser system also includes a processor that receives a signal generated from the detector forming the image and determines an eye astigmatism axis based on the signal.一種激光系統，包括沿著軸綫發射激光束的激光源和角膜散光計。所述角膜散光計包括沿第一環彼此被等距間隔開且將第一光束指向眼睛的第一組獨立光源，以及沿第二環彼此被等距間隔開且將第二光束指向眼睛的第二組獨立光源，其中所述第一環和所述第二環共面，並繞著所述軸綫彼此同心。所述激光系統包括接受由所述眼睛反射出的第一光束和第二光束的遠心透鏡，以及接受由所述遠心透鏡發出的光並且形成圖像的檢測器。所述激光系統還包括接受從所述形成圖像的檢測器産生的信號，並根據所述信號確定眼睛散光軸的處理器。
