Contact lens wearers may experience red, itchy, and watery eyes due to allergies caused by irritants such as pollen, dandruff, and protein buildup. Proper hand washing and lens care can help, as can wearing disposable lenses or switching to sensitive eye contact solution. GPC, caused by protein buildup, can also lead to allergic reactions. Some […]
Gravitational lensing is when a massive object bends light from a distant light source due to the deformation of space-time. It can cause quasars to appear in different places and produce multiple images. There are three types of gravitational lenses: strong, weak, and microlensing. Gravitational lensing is an astronomical phenomenon observed when a massive object, […]
Test targets are patterns used to check the accuracy of optical equipment. They ensure reliability and are used to test the resolution of devices. The target must have a higher resolution than the device being tested. Test lenses are used in factory settings and by those who rely on optical instruments. Targets come in various […]
