Contact Lenses Care

Handling such small, delicate objects takes some practice. In time, as you develop your own technique, you’ll be able to relax and insert, center, remove, and clean your lenses on autopilot.

Always wash and dry your hands before handling the lenses. Prepare your work area, be it sink or tabletop. Establish your routine and then stick to it to avoid mixing up the lenses. It’s advised that you always start with the right lens. I place a tiny dot on the rim of the right lens of my patients to allow them to distinguish it from the left lens and to banish the right-or-left problem forever. Whenever you rinse your lenses with water, be certain the water is cool. Never use hot water.

Hard contact lens solutions

Proper contact lens care includes using the proper solutions. These all play different roles in making contact lenses more comfortable and safer to wear. Essential solutions are wetting, cleaning, and soaking solutions, though you may find you occasionally need to use a lubricating solution while the lenses are in place. As is the case with the lenses themselves, the standards for hard-lens solutions are set by the American National Standards Institute. These standards apply to the solutions‘ functions, labeling and packaging, sterility, and the tolerance of the eye to the solutions.

Wetting Solution. Essentially, this turns a hydrophobic lens surface into a hydrophilic one that’s readily kept wet by the tears. It coats the lens surface and helps prevent any bacteria and dirt on your fingertip from being transferred onto the lens during insertion. It also provides a liquid cushion between the lens and the eyelid, and the lens and the cornea, making the lens more comfortable.

Cleaning Solution. This solution removes the dirt, oil, protein, and any other residues that have built up on the lenses during normal wear. If you don’t remove these particles regularly, they will collect in the micropores of the plastic, making your lenses less comfortable and less optically clear. Always rinse off the cleaning solution thoroughly with cool water and use a wetting solution before inserting a lens, because it may irritate the eye. I find that the cleaning solutions that have a gellike consistency tend to do a slightly better job than the more liquid ones; perhaps this is because they require more rubbing, an essential factor in mechanical cleaning.

Soaking Solution. In addition to further removing the oil and protein deposits, a soaking solution is a disinfectant. It protects the eye from bacterial and fungous infections. Soaking solutions also keep your lenses moist; though essentially hydrophobic, PMMA does absorb a slight amount of water. Tap water is not a suitable substitute, since the minerals it contains irritate the mucous membranes in the eye. It may also cause insoluble calcium deposits to form on the lenses, and it isn’t sterile. Make certain that you change the soaking solution each day and clean the storage case with hot water once a day.

Some practitioners prefer to store the lenses in a dry state. No microorganisms except for fungus spores can survive under dry conditions.

Although both these procedures are acceptable, I prefer the soaking method and feel that the lenses are cleaner and more comfortable when kept moist continuously.

All-in-One Solutions. A few companies produce an all-purpose solution to be used for wetting, cleaning, and soaking. Although this may be a convenience, I prefer the use of separate solutions because each contains different ingredients for its specific function. Anything else represents a compromise, because the various ingredients would negate each other’s effectiveness. For instance, substances that are contained in good soaking solutions negate the wetting effect; also the cleaner in a cleansing solution would be an irritant when it came into contact with the eye.

Comfort and Lubricating Solutions. These are instilled into the eye while the contact lenses are in place. They rewet, lubricate, clean, and cushion the lenses, and act as a kind of “artificial tears” that aid the spread of the normal tears. They are particularly useful for “dry eyes” that result from hormonal disturbances (such as the dryness of the mucous membranes that occurs after menopause, allergies, antihistamines, and birth control pills). They may be used as often as needed. Although the lubricating solutions are essentially the same, some patients may prefer one to another. These solutions are specially formulated to be used with contact lenses, and should not be confused with ocular decongestants, which whiten the eye and are not recommended.

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