The purpose of this study is to examine the long term effect of ultra-violet filtering contact lenses on macular pigment density (MPOD) and accommodative function.

Inclusion Criteria:

• The subject is an adapted soft contact lens wearer of at least 5 years duration of either an UV filtering contact lens or a non-UV filtering contact lens
• The subject must report wearing their contact lenses, on average, for a minimum of 5 days each week.
• The subject must have best corrected visual acuity of 6/7.5 or better in each eye.
• The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
• The subject must read and sign the statement of informed consent
• The subject must be between 18 and 43 years of age

Exclusion Criteria:

• On medication known to affect accommodation
• Active ocular surface pathology
• Had eye surgery
• Significant ocular tissue anomaly
• Any medical condition that may be prejudicial to the study
• Diabetes

Subject selection is based on a history of wearing one of two types of contact lenses for at least five years. Age-matching subjects into 4 age-brackets will be attempted with a target of five subjects in each age bracket among the two types of lenses.