According to the United Nations definition from 2019, the elderly include people over the age of 60. Age brings many changes in various aspects of a person's functioning, among which there is a decline in the general health of the individual and the risks of various chronic diseases and disabilities. Because many eye functions are impaired, vision problems are common in the elderly. Some eye diseases are more common or more specific to older age. Cataracts, senile macular degeneration, primary open-angle glaucoma and diabetic retinopathy together can be classified as eye diseases of the third age and are the most common cause of visual impairment in this population. The aim of this thesis is to investigate which eye diseases are the most common cause of visual impairment that are most present in the third age, and what is the incidence of visual impairment. The sample includes all persons of third age and who are enrolled as patients in the city of Makarska in the ophthalmology office of Dr. Damir Mendeš. The research was conducted by the method of data collection, independent collection of diagnoses based on insight into medical records. The results of this research provide insight into the percentage of the occurrence of visual impairment in the area of Makarska and its surroundings, and the processed statistical data are an indicator of relevant information used by the Croatian Institute of Public Health. The thesis shows how many elderly people go through under the radar of many institutions, which is why there is a lack of adequate support in adapting to the new circumstances in which people find themselves. It is also possible to see how much information the Croatian Association of the Blind has about the occurrence of third-degree impairments in the city of Makarska and based on the extent to which it includes visually impaired people in its education and rehabilitation programs. With the increase in the number of the elderly population, the number of damaged species is also increasing, which results in the growing need for adequate methods of their evaluation and rehabilitation. Given the focus of this thesis, the results could contribute to more successful prevention of visual impairment in old age and increase awareness of the importance of their quality of life, which includes rehabilitation of visually impaired persons within the biopsychosocial framework.