Clinical Research Directory

Inclusion Criteria: CXL Group * Age 8-35 years * Clinical diagnosis of keratoconus and seeking CXL treatment * English speaking ability sufficient to comprehend consent with parental assistance * MRI compatible * Ability to lie still for an MRI session (60 minutes) Control Group * Age 8-35 years * No diagnosis of keratoconus * English speaking ability sufficient to comprehend consent with parental assistance * MRI compatible * Ability to lie still for an MRI session (60 minutes) Exclusion Criteria (Both Groups): * Claustrophobic * Weight \> 285 lbs (weight limit of the MRI table) * Significant medical history, including: Current DSM-IV-TR axis I psychiatric disorders. Chronic pain Significant head injury Seizures Brain tumor Cerebrovascular accident Neurological disease aside from migraine HIV-AIDs Prescription medication strongly implicated in causing dry eyes * Magnetic implants or metal-containing tattoos on their chest or above * Pregnancy * History of contact lens wear * Any allergic response to a numbing eyedrop in the past