Global Patient Registry of Inherited Retinal Diseases

Inclusion Criteria: For Participant Selection: * Participant has any clinically documented sign(s) and/or symptom(s) consistent with an Inherited Retinal Disease (IRD), or asymptomatic with documented retinal changes detected 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 following IRDs: X-Linked Retinitis Pigmentosa (XLRP) and/or Achromatopsia (ACHM) * Participant or legally acceptable representative has provided informed consent (and participant 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 is being screened for an IRD-related interventional trial For Caregiver Selection: \- Caregiver has an IRD diagnosis and presents with symptoms (visual impairment)