Outline for a comprehensive classification of retinal dystrophy and its consequences.

ABSTRACT

Classification of all relevant factors is a prerequisite to the formulation of specific objectives to attain goals of prevention of retinal dystrophy (RD) and effective provision of services. National and international agreement on a classification is sought. This outline stresses the importance of a sound conceptual basis. The root meaning of dystrophy (difficult nourishment), and the concepts given in the World Organization's International Classification of Impairments, Disabilities and Handicaps are emphasized. The proposed classification is designed to be statistical as well as assisting diagnosis and case management. The scheme for RD entities takes into account special features, in contrast to most treatable eye diseases. Genetics is stressed because of the importance of genetic counseling and rapid research advances. Three appendices illustrate portions of a comprehensive classification already in operation at the Retinal Dystrophy Service of NSW.