EasyFit Fitting Guide

Empirically Fit & Made to Order

GOOD LIMBAL COVERAGE
INSUFFICIENT LIMBAL COVERAGE

Insert – fill the lens with non-preserved saline.
Observe – fluorescein saline coverage to confirm it covers the entire cornea and clears the limbus.

Standard lens diameter has been optimized at 15.0 mm which will cover > 80% of all cases. If you do not observe good limbal coverage, provide and check corneal diameter (HVID) for lens refinement.

All images provided by Ferris State – Fit Scales

Relationship should exhibit approximately a 1:1 ratio.
Note: At insertion, you should observe a central clearance between 250 to 300 microns. This allows the appropriate room for the lens to settle on the eye.
Perform over-refraction.
Conduct a complete insertion and removal training with the patient. It is important to have patient independently remove and insert EasyFit Lenses.

EasyFit and Easy on the Eyes

Follow up appointment should be scheduled with in 7-14 days. Patient should insert lenses 4 hours before appointment.
Observe lenses to verify sufficient limbal coverage and center clearance. (Note: center clearance will ideally be between 100 to 175 microns.)
If patient is experiencing discomfort, use a diffuse white light to check for conjunctival alignment:
- Confirm the edge alignment is proper without excessive lift. Edge lift is usually identified by the patient as “lens awareness”.
- Confirm the conjunctival blood vessels are flowing freely underneath the lens (exhibit A). If you notice blanching or impingement, take note of location and severity for lens refinement.
Check the patient’s visual acuity and perform a spherecylindrical over-refraction.

Check for good alignment
Free flowing blood vessels
Perform an over-refraction

Practitioner Easy 3-Step
Fitting & Dispense Guide

Download Guide

Final Checklist

CONFIRM	OBSERVATION	ANSWER / REFINEMENT
Limbal Coverage	Fluorescein saline covers the entire cornea and clears the limbus	If no, take note and if possible include Smart Phone picture for lens refinement
Center Clearance	Approximately 1:1 ratio between lens thickness (center thickness) and Thickness of fluorescein reservoir (clearance) at insertion	In no, take note and if possible, include Smart Phone picture for lens refinement
Conjunctival Alignment	Good landing and even distribution of lens on conjunctiva. Good conjunctival blood flow underneath the lens	If no, take location note and if possible, include Smart Phone picture for lens refinement
Over-Refraction	Visual acuity is within one line of best corrected vision with eye glasses	If no, perform over-refraction and document appropriate parameters

Evaluation

1. Evaluate Coverage
EasyFit Lifestyle Contacts are digitally designed to fully cover the sensitive area of the limbus. Coverage over the limbus is essential, however, with minimal clearance to allow oxygen transmission to the area. Use wide beam, colbolt blue light to evaluate the presence of flouresciene. Under white light optic section check for clearance. There should be no touch at the limbus.
** A lack of staining at the limbus indicates that there is adequate clearance and no change is necessary.

2. Evaluate Apical Clearance

At insertion, look for clearance of 250-300 microns
After 30 minutes of wear time, look for clearance of 200 microns.
The ideal clearance after 4 plus hours of wear time is 150-175 microns.

1 2

Ideal clearance

(4+hours of wear time)

3. Evaluate Conjunctival Alignment
Look at conjunctival alignment. Be sure there is no edge stand-off, impingement or peripheral seal off.

Ideal edge should not impinge or lift excessively

Ideal
Impingement
Excessive lift

1 2 3

Lens Assessment

EasyFit Lifestyle Contact Lenses will recess on average 100 microns during a full day of wear. About 50% of the settling will occur with in the first 30 minutes of application. Consideration should be given to wearing time when evaluating the clearance.

At insertion, look for clearance of 250-300 microns
After 30 minutes of wear time, look for clearance of 200 microns.
The ideal clearance after 4 plus hours of wear time is 150-175 microns.

Measure with optic section using white light at a 40 degree angle. Anterior segment OCT can also give you a more accurate reading of the fluid layer thickness.

Comfort vs Lens Awareness

This lens is designed to be as comfortable as a soft lens after adaptation. At the initial dispense there can be some lens awareness present. This is most common in new contact lens patients. True discomfort is a sign of an improperly fitting lens. EasyFit Lifestyle Contacts are made to order from data recieved. The lenses are digitally designed based on K readings, cornea diameter and RX and therefore accurate measurements in all categories for all patients is a must. Every precaution should be made to ensure the readings are accurate when submitted for order.

If the patient is not comfortable after 30 minutes of wear time, the primary cause of discomfort is edge stand off.