Name of the Procedure:

Common name(s): Gas Permeable Contact Lens (Toric, Prism Ballast) Technical/medical term: HCPCS Code V2511

Summary

This procedure involves fitting a specialty contact lens known as a gas permeable (GP) toric lens with prism ballast. These lenses are customized to correct specific vision problems such as astigmatism, providing sharp and stable vision.

Purpose

The procedure addresses vision impairments primarily due to astigmatism and provides clear, stable vision. The prism ballast feature ensures that the lens remains oriented correctly on the eye to provide optimal visual acuity.

Indications

• Patients with astigmatism who do not achieve optimal vision with regular soft lenses.
• Patients with uneven corneal surfaces.
• Individuals experiencing discomfort or inconsistent vision with traditional lenses.

Preparation

• Comprehensive eye examination.
• Measurement of corneal curvature.
• Fitting session to ensure the correct size and shape of the contact lens.
• No specific fasting or medication adjustments are typically needed.

Procedure Description

1. The patient undergoes a detailed eye exam.
2. Measurements of the corneal surface are taken.
3. A trial lens fitting to determine the best fit and vision correction.
4. The patient is instructed on lens insertion, removal, and care.
5. After the fitting, the customized lens is ordered.
6. Once the lens arrives, it is placed in the patient’s eye to ensure a proper fit and vision clarity.

Tools: Keratometer, fitting sets, and diagnostic lenses.

Duration

Initial fitting and evaluation typically take about 1-2 hours. Additional follow-up visits may be necessary for final adjustments.

Setting

The procedure is performed in an ophthalmology or optometry office.

Personnel

• Optometrist or ophthalmologist specializing in contact lenses.
• Trained technicians or assistants.

Risks and Complications

• Temporary discomfort or irritation.
• Difficulty adapting to the lens.
• Potential for mild eye infections if proper hygiene is not maintained.
• Rare complications include corneal abrasions or ulcers.

Benefits

• Improved vision quality for individuals with astigmatism.
• Stable, clear vision with reduced dependence on eyeglasses.
• Long lifespan compared to soft lenses, providing cost-effectiveness over time.

Recovery

• Patients may require a short adaptation period to get used to GP lenses.
• Regular follow-up visits to ensure a perfect fit and optimal vision.
• Adherence to prescribed lens care and hygiene practices.

Alternatives

• Soft toric contact lenses.
• Eyeglasses with astigmatism correction.
• Refractive surgery, such as LASIK.
• Pros and cons: Soft lenses are more comfortable initially but may not provide as sharp vision. Surgery is permanent but comes with surgical risks.

Patient Experience

• Some initial discomfort and adaptation period, typically lasting a few days to weeks.
• Awareness of the lens in the eye is common initially, reducing over time.
• Pain management is generally minimal, with over-the-counter lubricating eye drops recommended for dryness or irritation.