Previously known as opticians, optometrists are trained to examine the eyes to detect defects in vision, signs of injury, ocular diseases or abnormality and problems with general health, such as high blood pressure or diabetes They make a health assessment, offer clinical advice, prescribe spectacles or contact lenses and refer patients for further treatment, when necessary br br Optometrists study at university for at least three years and must participate in a period of assessed clinical training in practice, before being deemed to have the knowledge and skills needed to be registered Once registered, they have the opportunity to take further qualifications and develop their interests in specialist areas of practice br