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A lens prescription is a document that is filled in by a qualified optician or ophthalmologist and collects all the necessary parameters to correct your vision problem.

1. Observe your prescription. Locate the initials OS and OD. These are abbreviations of the left eye (OS) and right eye (OD) in Latin. You may also see OU, referring to both eyes.
3. Now look at the numbers next to the abbreviations. The higher the number is, the worse the visual defect will be. The first number is the dioptres (also called spherical) and can be positive (indicating farsightedness) or negative (indicating myopia).
5. If you can see more digits for one or both eyes, this means that you have astigmatism. This means that you will have three values: Spherical, Cylindrical and Axis. The cylindrical can be positive or negative, axis values are between 0° and 180°.
7. If you have presbyopia, two graduations will appear: one for near and the other one for far. The graduation for near may appear as the far one (spherical, cylindrical, axis) or only indicate the addition for near, a value between +0.50 and +3.50 that is depending on the age.
9. Also, on your prescription may appear two values: inter papillary distance and separation of centres.

You can also place an order for glasses without prescription circle lenses to try them at home. If you decide to keep any of the selected frames, put in the return package the chosen frames, the discarded frames, and your old or spare glasses. Specialist will use your old glasses to obtain the inter papillary distance (and the graduation, if it has not changed). We will resend your new graduated glasses and your old ones in the same package. If you need help.

It is never convenient to buy contact lenses without a prescription from the visual health specialist; you have already seen the entire process and exams that you must perform to determine if it is necessary or not to use contact lenses or corrective glasses.

Remember to visit the specialist at least once a year unless there is a special or additional recommendation.

Laser surgery, the alternative to glasses

Modern laser techniques allow astigmatism to be corrected quickly, safely and efficiently. Using high precision instruments, a specialized surgeon separates the corneal epithelium and applies a laser that moulds the cornea until it adopts the appropriate shape that allows for perfect refraction.