significant changes were seen in mean vision quality
Objective studies evaluating the effects of orthokeratology showed that vision improvement was more likely to be maintained in patients who underwent surgery for myopia, hypermetropia and presbyopia, than in those who did not. Other results: a reduction in glare, improved nighttime vision and an improved ambience. Subjective outcomes were also more favorable than in the control group. Results: The mean difference between eyes at night was 0.2 with no significant change from baseline. In the group receiving surgery, significant changes were seen in mean vision quality, ocular hypertension, refractive error (the optical equivalent of myopia or astigmatism), visual acuity, and ocular contrast.
Effects of Orthokeratology on the patient: The results are encouraging for most people but the best approach is still undergoing surgery for better vision quality and for other possible benefits that may be obtained by correcting eye weaknesses. As already stated, the primary goal is to correct for the refractive errors. However, patients can also expect the effects of Orthokeratology to increase with time, as the natural ability of the eyes to adjust to light changes, accommodation, etc., should remain intact. Also, in some cases, the effects of the surgery may enhance or improve conditions such as sleep apnea, snoring, dry eyes, sinusitis, and headaches.
What are the long term effects of the treatments?
In most of the studies, there have been long term effects of the treatments on various aspects of the patient’s life, but there was only one study focusing on the patient’s emotional well being. There was an overall significant improvement in the emotional well-being of patients, especially those who had opted for PRK (para-pleural keratectomy) rather than LASIK, as this procedure corrects for the high variation in the horizontal meridian. In addition, there was a significant decrease in depression.
What are the possible complications from these treatments? The only possible complication that has been reported during treatment is dry eye syndrome, which occurs when there is too much moisture in the eyes and it causes the eyelids to close too tightly. Dry eye syndrome can be resolved by discontinuing the use of PRK or LASIK; if this fails, the most common alternative is the use of an artificial tear trough that can be worn while driving.
What about contacts and eye glasses?
During PRK or LASIK, the myopic refractive error is corrected by cutting off the sharp edge of the cornea and thus, reducing the effects of myopia. However, since most people with myopia do not wear contact lenses, they cannot benefit from this method of treatment and will revert back to glasses after stopping PRK or LASIK. As a result, these patients must wear glasses to maintain their independence and not lose the benefits of PRK or LASIK.
Myopia (nearsightedness) and presbyopia (cross-eyedness) are associated with many health problems. However, if these problems are not treated early, these problems can deteriorate and eventually cause more serious effects. For example, myopia control may be corrected through PRK or LASIK, but this does not prevent the onset of crossed-eye wear, cataract, or eye disease. Orthokeratology provides an effective pathogenetic treatment for myopia control and for several other myopia conditions. This treatment is based on conventional surgical techniques and modern nutritional approaches.