Time Study for Biometry Measurements With the Lenstar and IntraOcularLens (IOL) Master 500

This is an open-label study randomized by sequence. Each eligible subject who signs a consent
form and fulfills all Inclusion/Exclusion criteria will undergo ophthalmic measurements by
the two test products:

A. Haag-Streit Lenstar Version i4

B. Zeiss IOL Master 500

The order of measurements for the IOL Master 500 and the Haag-Streit Lenstar Version i4 will
he randomized. The two possible sequences will be balanced (approximately 22 eyes each:
AB,BA). One eye of each subject will be measured. Time needed to complete testing will be
measured utilizing a stop-watch. Total time needed to complete all measurements of the study
eye using each of the test products to capture a complete ophthalmic exam with the devices
standard operating settings set to automatic measurement and analysis will be calculated by
the following start and stop points:

First Timed Measurement: Measurement Acquisition Start: When the technician starts to acquire
tbe first measurement Stop: When the technician has completed all measurements

Second Timed Measurement: Subject Data Entry Start: When the technician starts to enter the
subject data. Stop: When the technician has completed subject data entry.

Third Timed Measurement: Complete Ophthalmic Exam with each test product Start: When tbe
subject is seated at the instrument, just prior to the technician entering any subject data
into the test product.

Stop: Upon completion of all measurements using one of the test products, just prior to
printing results.

Three trained technicians will operate tbe same study devices (Haag-Streit Lenstar Version i4
and IOL Master 500). Approximately equal number of subjects will be assigned to each
technician.

Inclusion Criteria:

Subjects wbo meet all of the following criteria are eligible to participate in tbe study:

1. Male or female l8 years of age or older on the date of Informed Consent.

2. At least one eye of each subject must be a phakic eye.

3. Subject must be able to fixate on a target.

4. Able to understand and willing to sign tbe informed consent.

Exclusion Criteria:

Subjects will be excluded from the study if the following applies:

1. History of corneal surgery.

2. Use of contact lenses during tbe ophthalmic exam or up to two hours prior to the exam.

3. Any ophthalmic condition preventing use of either of the instruments used in the
study.

4. Any ophthalmic condition which might impair tbe validity of results from any of the
instruments used in the study.

5. Any medical condition, which, in tbe Investigator's judgment, interferes with the
subjects ability to comply with tbe protocol, compromises subject safety, or
interferes with tbe interpretation of the study results.