
| 
							 Technical Parameter  | 
						
							 
  | 
					
| 
							 Sphere:  | 
						
							 Range:-19.00~+16.75-1 Step:0.25-1m、3.00m-1  | 
					
| 
							 Cylinder:  | 
						
							 Range:0.00~-6m-1(Measuring Range with Accessories 0.00~-8.00m-1) Step :0.25m-1  | 
					
| 
							 Cylinder Axial:  | 
						
							 Range:0~180°Step:5°  | 
					
| 
							 Cross Cylinder:  | 
						
							 ±0.25m-1  | 
					
| 
							 Rotating Prism:  | 
						
							 Range:0Δ~20ΔStep:1Δ  | 
					
| 
							 Distance of Optical center(also known as pupil):  | 
						
							 Range:50~75mm Step:1mm  | 
					
| 
							 Sight Switch:  | 
						
							 Range:∞~380mm(distance of Optical center is 64mm)  | 
					
| 
							 Front Chin Test:  | 
						
							 Range:0~16mm  | 
					
| 
							 Distance(from cornea vertex to the lens surface):  | 
						
							 16mm  | 
					
| 
							 Standard Accessories Lens:  | 
						
							 Two pieces of Auxiliary Cylinder -2.00m-1and-0.12m-1 respectively  | 
					
| 
							 Standard Accessories:  | 
						
							 One piece of M2 hexagon wrench , one piece of a myopia standard card Two piece of myopia standard card, one piece of standard card holder, a dust cover  | 
					
| 
							 Product Size:  | 
						
							 338L×99W×292H(mm)  | 
					
| 
							 Package size:  | 
						
							 410L×200W×370H(mm)  | 
					
| 
							 NW:  | 
						
							 About 5kg  |