Name: ORTHOLENS Orthokeratology Contact Lenses - Biolens Lab
Availability: InStock

Description

OrthoLens is a modern Orthokeratology lens, and thanks to its special geometry it eliminates all or most myopia by reversible modeling of the cornea. The OrthoLens is worn at night while sleeping, allowing the wearer to enjoy clear vision all day without glasses or contact lenses. The correction is 70% from the first night, complete after 3 to 4 nights and stabilizes after 4 weeks.

OrthoLens significantly improves the quality of life of patients and allows myopia control for younger patients without irreversible changes.

OrthoLens design

The posterior surface of the OrthoLens lens is made up of five zones

Central area

Reverse area

Two alignment zones

A peripheral clearance zone

Each of these areas is defined with a specific curvature and width calculated for a given cornea

The Central Zone: called the optical zone, its diameter defines the treatment zone and its radius r0 is determined according to the myopia to be reduced. Exerts a positive corneal tissue flattening force.

The Inverse zone: Characterized by a radius (RC) less than r0, creating a negative force and forming a tear reservoir.

The Alignment Zone: composed of two curvatures AC1 and AC2, this is the zone whose rays align with the paracentral cornea, this zone controls the centering and movement of the lens.

The Peripheral Zone: 0.5 to 0.8 mm wide, its radius is defined by the desired edge lift (AEL). It facilitates tear exchange and lens movement.

Fit

The success of adjustment of OrthoLens lenses depends on the consideration of three essential points

Have a mastery of the principles and rules of the practice of Orthokeratology

Selecting the right candidate for orthokeratology

A precise topography is mandatory for the practice site

Choice of trial lens

The fit of the OrthoLens does not require a trial lens; the lens is custom-made based on the corneal topography, and specially dedicated software will calculate the parameters of the OrthoLens lens to be fitted.

Send to the laboratory :

The topography :

Corneal radii of curvature
Eccentricity in both meridians
Corneal diameter
Pupillary diameter in ambient light

The refraction glasses

Evaluation of fit:

Use a drop of physiological serum without preservative (or moisturizing eye drops) before inserting the lens, then proceed to evaluate the fit:

Centering : It is essential that the lens is well centered, as the ortho-K effect will be weak, and distortions may appear if the lens is off center.

Mobility : about 1 mm after blinking; the lens should not adhere to the cornea

Fluorescent image :

Central zone: centered vertically and horizontally, approximately 3 to 5 mm in diameter
- If the area is not identifiable, the lens is too tight
- If the area is too dark, the lens is too flat
- Center pitting also indicates fit is too flat
Tear reservoir: 0.5 to 1 mm wide, without air bubbles
Alignment zone: Aligned with the paracentral cornea 1 to 1.5 mm wide
Peripheral clearance: from 0.5 to 0.8 mm

Ortholens bien Adaptée — Ortholens Bien Adaptée

Parameters

Diameter	9.00 to 12.50 mm by 0.1
Radius	Function of myopia to be corrected by 0.01
Optical Zone	5.00 to 8.00 mm by 0.1
Power	-2.00 to +3.00 by 0.25 D
Myopia to be corrected	-0.75 to -5.00 D

Material

	OPTIMUM EXTREME	OPTIMUM INFINITE
Classification	Focon III 5	Focon III 5
Name	Roflufocon E	Tisifilcon A
DK	125	180
Hardness	77	81
Light transmissibility	94%	96%
UV Filter	Yes	Yes
Tint	Transparent	Transparent

Care

We recommend using a care solution for rigid contact lenses without preservatives Regard K®

See Product

Guarantees

Biolens Lab offers a 3 month guarantee of fit for OrthoLens lenses.

ORTHOLENS

ORTHOLENS

Orthokeratology Contact Lenses