Global Patient Registry of Inherited Retinal Diseases

Inclusion Criteria:

For Participant Selection:

• Participant has any clinically documented sign(s) and/or symptom(s) consistent withan Inherited Retinal Disease (IRD), or asymptomatic with documented retinal changesdetected by imaging or electrophysiology

• Participant has documented genetic variant(s) (known pathogenic, likely pathogenic,or variants of uncertain significance) in relevant genes for any of the followingIRDs: X-Linked Retinitis Pigmentosa (XLRP) and/or Achromatopsia (ACHM)

• Participant or legally acceptable representative has provided informed consent (andparticipant assent, when applicable) in accordance with local requirements

• Participant is able to have relevant visual and/or retinal assessments performed

For Caregiver Selection:

• Caregiver has consent from the associated participant to participate in the study,or participant assent and consent from their legally acceptable representative

• Male or female aged greater than or equal to (>=)18 years

• Identified by an enrolled participant (or their legally acceptable representative*)as a primary caregiver

• Caregiver has provided informed consent in accordance with local requirements

Exclusion Criteria:

For Participant Selection:

• Participant has received a treatment in an IRD-related interventional trial, or isbeing screened for an IRD-related interventional trial

For Caregiver Selection:

• Caregiver has an IRD diagnosis and presents with symptoms (visual impairment)