Name of the Procedure:

Prescription of Optical and Physical Characteristics of and Fitting of Contact Lens, with Medical Supervision of Adaptation; Corneal Lens for Aphakia, Both Eyes

Summary

This procedure involves prescribing and fitting contact lenses designed for patients without a natural eye lens (aphakia) in both eyes. It includes a medically supervised adaptation period to ensure the lenses fit correctly and comfortably.

Purpose

The purpose of this procedure is to correct vision in patients who have undergone the removal of their natural lens due to cataracts or other medical conditions, resulting in aphakia. The goal is to provide clear vision and improve the quality of life by using specially designed corneal lenses.

Indications

• Patients who have had both natural lenses removed (bilateral aphakia).
• Individuals with difficulty achieving clear vision using traditional glasses.
• Patients seeking an effective alternative to eyeglasses for better visual acuity.

Preparation

• Comprehensive eye examination to assess the corneal shape and eye health.
• Measurement of the optical power required for the contact lenses.
• Discussion about the patient's lifestyle and visual needs.
• Instructions to avoid wearing any existing contact lenses for a specified period before the fitting.

Procedure Description

1. Initial Consultation: A thorough eye examination is conducted.
2. Prescription: Determination of the optical characteristics required for each lens.
3. Trial Lenses: Initial fitting with trial contact lenses to assess fit and vision.
4. Adaptation Period: Close monitoring and adjustments during the adaptation phase.
5. Final Fitting: Once the optimal fit is achieved, final lenses are prescribed. Tools/Equipment: Diagnostic tools for eye measurements, trial lenses. Anesthesia: Not typically required, but numbing drops may be used if needed.

Duration

The fitting process typically takes 1-2 hours initially, followed by several follow-up appointments over a few weeks.

Setting

Outpatient clinic or eye care center.

Personnel

• Optometrist or ophthalmologist
• Trained contact lens specialist
• Support staff for patient instruction and follow-ups

Risks and Complications

• Temporary discomfort or irritation
• Difficulty adjusting to lens wear
• Risk of corneal infection if proper hygiene is not maintained
• Rare allergic reactions to the lens material or solutions

Benefits

• Restoration of clear vision in aphakic patients.
• Improvement in the quality of life by reducing dependence on eyeglasses.
• Enhanced peripheral vision compared to glasses.

Recovery

• Patients may experience mild discomfort initially, which typically resolves as they adapt to the lenses.
• Instructions for proper lens care and hygiene to prevent complications.
• Follow-up appointments to monitor fit and eye health.
• Most patients fully adapt within a few weeks.

Alternatives

• Spectacle lenses with high-powered prescriptions (thicker lenses, less aesthetically pleasing).
• Intraocular lens implants (surgical option with its own risks and benefits). Pros and Cons:
• Contact lenses provide better visual quality and aesthetics but require diligent care and adaptation.
• Glasses are non-invasive but may be impractical due to lens thickness.
• Intraocular lenses offer a permanent solution but involve surgical risks.

Patient Experience

During the fitting, patients may feel mild discomfort or a sensation of a foreign body in the eyes, which generally subsides with time. Proper hygiene and care are crucial, with specific instructions provided to ensure comfort and prevent infections. Pain management measures are usually minimal, focusing on patient education and support during the adaptation period.