Fitting contact lenses is as much an art as it is a science. There are many different types of vision requirements and available contact lens designs. Some lens designs work better for dry eyes while others may work better for astigmatism or presbyopia. Some lens designs may be worn while sleeping while others may treat certain eye diseases. The options are numerous.
There are lens designs for myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia (bifocal). There are rigid gas permeable (hard) contacts, scleral contacts, soft contacts, toric rigid and soft contacts, rigid and soft multifocal contacts, cosmetic contacts, therapeutic contacts, medically necessary contacts, extended wear contacts, daily wear contacts, daily weekly and monthly disposable contacts, color deficiency contacts, sports contacts, prosthetic contacts, keratoconus contacts, and hybrid (rigid/soft) contacts.
The contact lens fitting process will begin with an initial exam to determine the necessary lens parameters for your particular visual and eye health needs. Trial lenses are than order and dispensed. If it is a new fitting and contact lenses have never been worn before instructions on insertion, removal, handling, and contact lens solutions are provided. You will wear the trial lenses for five to seven days to evaluate there fit and determine if any problems arise. During the fitting process communication is critical. If there are any difficulties with the vision or comfort appropriate adjustments to the fit are made. These modifications may require the ordering of a new lens. When the lens design is found to be appropriate the final contact lens prescription is ordered.
Toric Contact Lenses
Toric contact lenses are contacts specifically designed to correct astigmatism. They are different from the more common spherical contact lenses which have the same power in all axis meridians. A toric contact lens has one power in its horizontal axis meridian and different power in its vertical axis meridian. These lenses must seat with a specific orientation in order to correct the astigmatism properly. The acuteness of vision depends greatly upon how well they orientate. This type of contact lens fitting requires time and often multiple lens trials.
Multifocal Contact Lenses
Multifocal Contact lenses are designed to deal with presbyopia (bifocal) issues. The goal is to create simultaneous distance and near vision that is clear and consistent. At first blush it sounds simple and as straight forward as might be expected with a spectacle multifocal. The reality is different. Because of the complexity of this lens design it usually requires an "out of the box" fitting approach that is persistent and creative. To be successful different options and combination of options must be tried.
Medical Contact Lenses
Medically Necessary Contact Lenses are contacts that are necessary to rehabilitate vision that is otherwise uncorrectable with spectacles, or to treat degenerative corneal conditions. Examples of eye diseases requiring this modality of treatment are keratoconus, corneal transplants, irregular astigmatism, corneal ectasia, some corneal dystrophys, recurrent corneal erosion, certain dry eye conditions, pellucid marginal degeneration, keratoglobus, etc.
Scleral Contact Lenses
Colored Contact Lenses
See how colored contact lenses will change the color of your eyes