Name of the Procedure:

Prescription of optical and physical characteristics of contact lens, with medical supervision of adaptation and direction of fitting by independent technician; corneal lens for aphakia, 1 eye

Summary

This procedure involves prescribing and fitting a specialized contact lens, known as a corneal lens, for individuals who have lost the natural lens of the eye (aphakia). Medical professionals oversee the process, ensuring that the lens is correctly adapted and fitted by a trained technician.

Purpose

The procedure addresses the condition of aphakia, where the eye's natural lens is absent due to surgery (commonly cataract removal), injury, or congenital absence. The goal is to correct vision by providing a custom-fitted contact lens that compensates for the missing lens, improving the patient's visual acuity and overall quality of life.

Indications

• Loss of natural lens due to cataract surgery, trauma, or congenital absence
• Need for vision correction in one eye with aphakia
• Patient preference for contact lenses over eyeglasses

Preparation

• A comprehensive eye exam, including measurements of the cornea and an assessment of the eye's overall health
• Possible discontinuation of certain medications as advised by the physician
• Patients should avoid wearing eye makeup and contact lenses on the day of the fitting

Procedure Description

1. Eye Examination: An ophthalmologist or optometrist conducts a thorough eye exam to assess the eye's health and measure the cornea.
2. Lens Prescription: Based on the measurements and health assessment, the doctor prescribes the optical and physical characteristics of the contact lens.
3. Lens Fitting: An independent technician uses the prescription to select and initially fit the contact lens on the patient's eye, making adjustments for optimal comfort and vision.
4. Supervised Adaptation: The patient wears the lens under medical supervision to ensure proper adaptation, addressing any discomfort or vision issues.
5. Final Adjustments: Final adjustments are made to the lens fit or prescription as necessary.

Duration

The entire process, including the eye exam, fitting, and adjustment period, typically takes 1-2 hours. Follow-up appointments may be required for final adjustments.

Setting

The procedure is usually performed in an outpatient setting at an ophthalmology or optometry clinic.

Personnel

• Ophthalmologist or optometrist for the prescription and supervision
• Independent technician for lens fitting and adjustments
• Support staff for patient care and administration

Risks and Complications

• Temporary discomfort or irritation
• Risk of eye infection if lenses are not properly maintained
• Rare issues with lens fit causing persistent discomfort or vision problems
• Possible allergic reaction to lens material

Benefits

• Improved visual acuity in the absence of the natural lens
• Enhanced quality of life with better vision
• Custom-fitted lenses provide greater comfort and precision compared to generic lenses

Recovery

• Patients can resume normal activities immediately after the fitting
• Proper lens care and hygiene are essential to prevent complications
• Follow-up appointments to monitor adaptation and make any necessary adjustments

Alternatives

• Eyeglasses with an aphakic lens: Less invasive but may be less convenient for an active lifestyle
• Intraocular lens implant: Surgical alternative providing permanent vision correction

Patient Experience

Patients may feel a brief period of discomfort as they adjust to the new contact lens. Pain is generally minimal and managed through fitting adjustments and proper lens care. Follow-up care ensures any issues are promptly addressed, contributing to a positive experience.