What Makes Shaw Lens Different?

Designing lenses that take into account how both eyes work together is not an easy task. The math is complex in a purely theoretically environment but when you factor in other variables like frame dimensions, the position of the glasses on an individual patient’s face and the limits that lens manufacturing and optics place, it’s no wonder why no one has done this before.

That’s what makes the SHAW lens unique. The SHAW lens process uses a patent-pending method to accurately model eye rotation in order to predict distortions caused by eye glasses. We then use that information to design a lens that reduces or eliminates the distortion other lenses can cause.

The key to making a SHAW lens is the measurement of Motor fusion (vergence) limits by the optometrist using Risley prisms on the phoroptor. It’s these tolerances that make all the difference.

Shaw Lenses are available in Single Vision, Office and Multifocal Lens Designs.

Shaw Lens

SHAW LENS is the gold standard for:

Straight Eye Refractive Amblyopia (as
low as 1 line)

• Strabismic /Refractive Amblyopia

•  Esotropia and Exotropia Strabismus
(when periodic or occasional with and
without anisometropia)

• Previous Slab-off wearers: Shaw
technology eliminates the optically
induced aniseikonia and optically
induced anisophoria (prismatic effect)
eliminating the requirement to consider
slab off.

• Discomfort with eyeglasses

• Keratoconus

• Problematic with new Rx

• Difficulty switching from contacts
to glasses, lots with no aniso, due to
management of distortion

• Mono-Vision Contact Lens Wearers

• Previous Multifocal failures usually due to
vertical vergence comfort

• More comfortable with glasses off

• Stereoacuity > 20”

• Low vergence amplitudes (less than
2D vertical)

• Convergence Insufficiency

• Poor reading, putting, eye-hand
coordination (sports, games)

• Learning impaired

• Eye Strain & Headaches

• Aniseikonia: Patients perceiving
different images sizes in each eye

• Dry eye symptoms (actually it was the
aniseikonia all along, dry eye symptoms
often occur for supposedly unrelated

• Diplopia

• Suppression

• Inability to resolve simulated 3D with

• Poor depth perception

• Bilateral IOL’s: At different distances
resulting in image disparity

• Epi-retinal membrane/Maculopathies

• Brain Injury

• Corneal Surgery complications

• Refractive Surgery complications

• Scleral Buckle Surgery

• Fragile Motor Binocular Vision Systems
(BV patients), characterized by:

o  Low vergence amplitudes

o  Suppression in off-centred gaze

o  Discomfort with off- centered gaze

o  Failure to detect break with
vergence testing

o  Fixation disparity in centred, down
or non-centred gaze

• Fragile sensory fusion systems
characterized by:

o  Suppression

o  Suppression scotoma

o  Poor stereopsis

o  Amblyopia

o  Inability to detect diplopia and to
detect break with vergence testing

• Patients that suffered acute motor
dysfunction that were new to cataract
or refractive procedures that have small
residual anisometropia.

• New Wearers of Multifocal Lenses that are suddenly
forced to look down to read and
impaired by induced vertical prism and
associated motor dysfunction