Fitting of Emerging Presbyopes
When the add power is + 1.00 diopter or less it is recommended to use High Definition lenses in both eyes and determine the initial lens power by adding + 0.50 to the patient's spherical equivalent distance Rx.

HDX Progressive Fitting Guide
Select the lens power closest to the patient's spherical equivalent distance Rx for each eye.

Confirm binocular far and near VA.

Make adjustments in power as necessary. The use of hand held trial lenses and over-refraction in ambient light is necessary to achieve accurate results. To improve near vision add plus in +0.25 steps to both eyes. If distance vision becomes unacceptable with this change, add plus to the non dominant eye only. To improve distance vision, add minus in -0.25 steps to both eyes. If near vision becomes unacceptable with this change, add minus to the dominant eye only.

• To improve DISTANCE:
  Add minus in - 0.25 steps to dominant eye.
• To improve NEAR:
  Add plus + 0.25 steps to non-dominant eye.

Modified Monovision Fitting Guide
Dominant eye (HD): Select High Definition lens and determine lens power by adding +0.50 to the patient's spherical equivalent distance Rx.

Non-Dominant eye (HDX Progressive): Select HDX lens power closest to the patient's spherical equivalent distance Rx. Confirm binocular far and near VA.

Make adjustments in power as necessary. The use of hand held trial lenses and over-refraction in ambient light is necessary to achieve accurate results. To improve near vision add plus in +0.25 steps to both eyes. If distance vision becomes unacceptable with this change, add plus to the non dominant eye only. To improve distance vision, add minus in -0.25 steps to both eyes. If near vision becomes unacceptable with this change, add minus to the dominant eye only.

• To improve DISTANCE:
  Occlude non-dominant eye and over refract the dominant eye for best far point correction. If distance vision can not be improved, replace the non-dominant eye also with High Definition lens to fit monovision.