A contact lens is a medical device used for cosmetic and therapeutic reasons, basically used for vision correction as it enhanced peripheral vision and does not accumulate moisture from the atmosphere. Moreover, the contact lens offers high compatibility as it can be worn along with other eyewear choices such as sunglasses. Furthermore, contact lenses are more comfortable than spectacles as it is widely used to correct refractive errors efficiently, compensates for visual deficiencies, and typically improves conditions such as myopia, hyperopia, astigmatism, and presbyopia. Nowadays contact lenses can be produced with the help of advanced technology such as cast molding which offers higher accuracy and quality. Lenses can be classified based on their materials, wear, schedule, and primary function into a multifocal contact lens, corrective contact lenses, and monovision.