However, laser surgery has a higher cost and is used for those with astigmatism who need a premium lens implant. The surgical center will ask the individual to pay the difference between the ...

Monovision is the name given to the art and science of fitting contact lenses on a patient who has developed presbyopia. Presbyopia is the unavoidable change in vision that usually occurs at around 40 ...

Abstract: This paper presents a measurement system based on the transmission fringe deflectometry, which is designed to facilitate the rapid attainment of the free-form lens optical parameters, ...

This paper proposes the measurement method for the surface profile of aero-engine blades based on multi-line laser sensing, which demonstrates excellent applicability for the 3D surface measurement.

If you're an astrophotographer out to capture January's planetary parade, picking up one of the best lens heaters can make a real difference to the quality of your photographs. Winter is a ...

CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, ...

The device comes with a dedicated temperature controller and a USB lens heater, can be powered by commercially available power banks, and is compatible with battery packs equipped with PowerIQ.