Portuguese Society of Ophthalmology and Portuguese Society of Human Genetics Joint Clinical Practice Guidelines for Genetic Testing in Inherited Retinal Dystrophies.

The Portuguese Society of Ophthalmology and the Portuguese Society of Human Genetics developed clinical practice guidelines to streamline genetic testing for inherited retinal dystrophies (IRDs), underlining the critical role of molecular diagnosis in enhancing patient care. Genetic testing is pivotal in diagnosis, genetic counselling, prognosis and access to clinical trials, and new gene-specific therapies. These guidelines recommend genetic testing in all IRD patients and provide a detailed assessment of available testing methods, ensuring that genetic counselling is integrated into ophthalmic care. Essential to this process is the inclusion of at least one genetic counselling session to effectively communicate and discuss implications of test results with patients and families/carers. Key recommendations include cascade testing to identify at-risk family members and standardisation of variant classification according to international criteria to ensure consistency in diagnosis and care. Ophthalmological follow-up is generally prescribed at intervals of 1-2 years for adults and 6 months for paediatric patients, to monitor disease progression and complications. Paediatric considerations are addressed, reflecting the complexities and ethical concerns associated with testing minors. These guidelines aim to elevate diagnostic accuracy, guide therapeutic decisions and ultimately improve patient outcomes, marking a significant advance in the genetic management of IRDs.