Repeatability and Reproducibility of the IOLMaster 700 Vers 1.70 and Agreement With IOLMaster 700 Vers. 1.50 and Pentacam

Inclusion criteria

• Male or Female 22 years of age and older.
• No history of rigid contact lens wear for at least 2 weeks. Soft lenses, if worn, should be removed at least one hour prior to the measurement.
• Able and willing to make the required study visits.
• Able and willing to give consent and follow study instructions.
• Group 1: normal eyes with best-corrected visual acuity of 20/20 or better, and lens opacities of 1.0 or less in the study eye using the LOCS III system, and no prior Laser Vision Correction.
• Group 2: cataract in the study eye greater than Grade 1 using the LOCS III system for one or more: nuclear opacity, nuclear color, cortical opacity, or PSC.
• Group 3: history of Laser Vision Correction (LVC).

Exclusion criteria

• Previous intraocular surgery other than Laser Vision Correction in the study eye.
• Previous corneal surgery other than Laser Vision Correction in the study eye.
• Presence of any corneal or retinal abnormality on slit lamp examination in the study eye.
• Corneal Cylinder < 0.75D measured with a IOLMaster.
• Active ocular infection or inflammation.
• Poor tear film/insufficient corneal reflex.
• Best corrected visual acuity worse than 20/200 in the study eye.
• Physical inability to be positioned at the slit-lamp biomicroscope or study devices (e.g. torticollis, head tremor, etc.).
• Insufficient eyelid opening or eyelashes which partially conceal alignment or keratometry reflections and prevent capture of all measurements.
• Inability to fixate (e.g. due to nystagmus, amblyopia or ocular disease, such as macular degeneration).
• Rigid contact lens wear during past two weeks.
• Principal Investigator's determination that the subject is not suitable due to other medical condition (reasons to be listed on eCRFs).