Animal Models for Retinal Degeneration

Retinal degeneration is often used to describe a category of human eye diseases, which are characterized by photoreceptor loss leading to severe visual impairment and blindness. An important, yet heterogeneous group of such diseases is called Retinitis Pigmentosa (RP). To understand the molecular mechanisms of disease induction and progression and to develop therapeutical strategies for the preservation of vision in RP patients, appropriate animal models are used in many research laboratories worldwide. The largest category of models consists of mutant (spontaneous and genetically engineered) mice. However, in recent years, zebrafish has been established as a highly valuable tool for the study of various biological problems, including retinal degeneration. In this review, we summarize the currently available mouse and zebrafish models to study retinal degeneration and give a short overview about recent developments in the field.