Abstract

Age-related impairments are becoming more and more severe for aging societies. The sensory organ diseases are particularly troublesome as they exclude seniors from their everyday activity. Therefore, maintaining good quality eyesight is essential for normal functioning. New medical therapies help restrain age-related changes, but still, monitoring is essential to the treatment process. Humans do not have the natural ability to see infrared radiation, but they can see ultra-short nearinfrared laser pulses. The visual system reacts as if one photon of visible radiation has been absorbed, instead of two photons of infrared radiation have been absorbed in the photoreceptors. Further research on the two-photon vision assumes the development of a new diagnostic method – the two-photon perimetry. The two-photon perimetry is a new tool for the investigation of the near-infrared perception of the human eye. Before the method will be introduced to ophthalmic clinics, it is important to understand its physical and technical limitations. Therefore, the measurement setup and software have been developed, and tests on volunteers and patients have been performed. All system modalities: eye stimulation, pupil imaging, and the patient interface were made from scratch. The obtained results will help to find optimal solutions applicable to clinical practice.

Author (1)