Cataract, as one of the four blindness-caused diseases in the world, seriously affects people's vision. The Portable slit lamp (iSpector Mini) is a smart ophthalmology device dedicated to cataract screening. It combines the 10x magnification micro lens with the mobile phone camera. And it can also clearly capture the image of the anterior segment of the eye, and upload the image to the cloud instantly, then providing a recommended diagnosis and comprehensive treatment based on the big data AI algorithm. iSpector Mini features small, portability, simplity, accuracy, and AI-assist. So the examination is not limited by the region, environment, patient cooperation or operator's technical level and others,The screening of cataract will be faster and more accurate.