ClearPath DS-120 Clinical Study Protocol

Inclusion Criteria: * Persons between the ages of twenty-one (21) and seventy (70). Best efforts shall be made to include as many patients as possible between the ages of thirty-five (35) and sixty (60). * Subject must be able to read or understand and give informed consent. * Pass the medical health history and comprehensive ophthalmic examination (which is determined by the investigator if the test subject has a normal ophthalmic examination and is in overall good health). Ophthalmic examination includes a clinical evaluation of the subject's eyes and a complete manifest refraction producing a best aided visual acuity of \<20/40. Exclusion Criteria: * Subject has had the crystalline lens removed from the study eye or has had the crystalline lens removed and replaced with an intraocular lens (IOL) implant in the left eye. * Subject has been clinically diagnosed with cataracts in the study eye. * Subject has had a fluorescence angiogram within the last six months. * Subject has undergone a treatment using photodynamic drugs within the last year. * Subject has Type I or II diabetes or is not deemed healthy from Demographic and Health Questionnaire or the comprehensive eye exam. * Subject was fit with contact lens within the last 30 days. * Subject has ocular surface (dry eye) disease. * Subject is unable to cooperate with or understand clinical instructions. * Subject is unable to complete test sequence