Eye-Movement Intervention for Cognitive Impairment Across Schizophrenia Spectrum

Inclusion Criteria: * Age between 15 and 45 years. * More than 9 years of education. * Normal or corrected-to-normal vision without color blindness, color weakness, strabismus, or nystagmus. * Right-handedness. * Impaired cognitive performance defined as a T-score \<40 in at least one MCCB cognitive domain at baseline. * Capacity to complete cognitive and eye-tracking assessments. * Clinical high-risk group: Meet psychosis-risk syndrome criteria based on SIPS/SOPS, including attenuated positive symptoms or brief intermittent psychotic symptoms. * First-episode schizophrenia group: Meet DSM-5 criteria for schizophrenia, with first episode occurring within approximately 2 years of illness onset and minimal prior antipsychotic exposure. * Chronic schizophrenia group: Meet DSM-5 criteria for schizophrenia, with illness duration ≥5 years and stable treatment status for the previous 6 months. * Healthy control group: No current or past psychiatric disorders based on MINI 7.0 and no significant depressive symptoms based on the Hamilton Depression Rating Scale. Healthy controls will also meet the same general criteria regarding age, education, handedness, and vision. Exclusion Criteria: * IQ \<70. * Severe or unstable medical or neurological illness (e.g., stroke, epilepsy, dementia, cardiac disease, or uncontrolled hypertension). * Substance abuse or dependence. * Clinically significant laboratory abnormalities. * Visual or auditory impairments affecting task performance.