contactlensrecept

A contact lens prescription is a formal authorization issued by a licensed eye care professional that allows a patient to purchase contact lenses. It is separate from an eyeglasses prescription and is based on a contact lens fitting that assesses refractive error, corneal shape, tear film, and ocular health. A prescription may specify parameters such as sphere (SPH), cylinder (CYL), and axis (AX) for astigmatism, as well as the base curve (BC) and diameter (DIA) of the lenses. For multifocal lenses, an addition power (ADD) may be listed. The prescription can also indicate lens type (soft or rigid gas permeable), material, water content, and oxygen permeability (Dk). Wear schedules (daily or extended wear) and replacement schedules (daily disposables, biweekly, monthly) may be included, along with any brand or model restrictions.

Eye care professionals issue prescriptions after a fitting exam to ensure proper lens fit, centration, and ocular health. In many jurisdictions, the prescription is valid for a set period (often one year) and must be renewed to continue purchasing lenses. A contact lens prescription is not the same as a glasses prescription, and changing lens type or parameters usually requires a new fitting.

Purchasing and transfer: Retailers often require a valid prescription at purchase time. The prescription can be transferred between providers, or a copy or electronic version can be kept for personal records. Regular follow-ups are recommended to monitor fit, corneal health, and comfort; symptoms such as redness, irritation, or vision changes should prompt professional advice.

Privacy and regulation: The prescription contains health information and is subject to privacy protections and professional guidelines.