Prisms

Visual Alignment Correction with Optical Precision

Prisms are optical elements used in eyeglass lenses to correct misalignments of the eyes, improving visual comfort and eliminating symptoms associated with excessive eye strain.
At Optocentro, we perform a comprehensive evaluation and customize prisms, ensuring a precise, comfortable solution tailored to each patient’s needs.

What Are Prisms in Optics?

Prisms are components built into lenses that deflect the direction of light, allowing both eyes to work in coordination.
They are especially useful when:

• mild ocular misalignment (mild heterophoria or heterotropia);

• convergence difficulties;

• binocular coordination problems;

• frequent eye strain;

• double vision (diplopia) in certain situations.

By adjusting the point where the image is projected, the prisms help the eyes “meet” without excessive strain.

Symptoms That May Indicate a Need for Prisms

The use of prisms may be recommended when the user exhibits:

• frequent headaches;

• intermittent double vision;

• a feeling of eye strain;

• difficulty staying focused while reading;

• instability in line reading;

• unusual eye strain from using a computer;

• discomfort after long periods of concentration.

Many of these symptoms stem from minor misalignments that go undetected in traditional exams.

How Are Prisms Prescribed?

Lenses should only be prescribed following a proper clinical evaluation.
The process includes:

1. Comprehensive Binocular Assessment

Analysis of binocular coordination, eye movements, and convergence.

2. Measurement of Phoria or Tropia

Determination of the degree of ocular misalignment.

3. Fusion and Visual Comfort Tests

Assessment of the ability to keep the two images together.

4. Prism Testing in a Real-World Environment

Instant simulation to confirm comfort and effectiveness.

Each prism is prescribed based on precise, calibrated values for daily use.

Types of Prisms Used

Depending on the user's needs, we can apply:

▪ Prisms Built into the Lenses

The most common method, ensuring aesthetics, durability, and visual balance.

▪ Fresnel lenses

Thin lenses applied temporarily to the cornea, recommended for cases requiring gradual adaptation or clinical changes throughout treatment.

▪ Specific Lenses for Near or Distance Vision

For users who show differences in alignment across different tasks.

Prisms and Vision Therapy

In some cases, the use of prisms is supplemented by visual therapy.
This combined approach:

• reduces muscle strain;

• improves binocular coordination;

• improves the stability of the image blending;

• speeds up the success of vision correction.

Learn more at Visual and Sports Therapy.

Fitting and Adjustment of Prism Lenses

Adaptation to prismatic lenses can vary from person to person.
Optocentro guarantees:

• meticulous technical assembly;

• millimeter-precise alignment;

• continuous adjustments for greater comfort;

• clinical follow-up to monitor progress.

It is essential that the assembly be extremely precise, as even slight differences in the position of the lenses can alter the prismatic effect.

Results and Benefits

With the proper use of prisms, significant improvements can be achieved:

• reduction or elimination of double vision;

• greater comfort while reading and working digitally;

• reduction in headaches;

• less eye strain;

• more stable and natural binocular vision;

• improved everyday vision.

Schedule Your Binocular Eye Exam

If you experience symptoms of eye strain, double vision, or unexplained visual discomfort, schedule a comprehensive eye exam.
Through the website Appointmentspage, you can schedule your appointment and receive specialized care to determine if prisms are the right solution for you.