Monday, March 10, 2008

Contacts Lit review

Cameron Johnston (2006, June). Soft contact lens use alters outcomes of LASIK eye surgery. Medical Post, 42(20), 61. Retrieved March 7, 2008, from Research Library database. (Document ID: 1065471191).

Patient who had previously wore contacts had less residual and a better outcome after surgery in the means of contrast and glare conditions. Patients who wore glasses were more likely to be over treated. This study by Dr. Tuan, was based on 131 patients who wore contacts and 25 who wore glasses. A follow-up was taken six months after the surgeries and the results show that those who wore soft contacts had a better contrast to sensitivity under photopic, mesopic and mesopic with glare. These results were statistically significant. Some of the contacts previously worn were the hydogel-type, which are left in place while sleeping. Dr. Bruce Nichols is the president of the Canadian Society of Cataract and Refractive Surgeons and a medical director at TLC Laser Centre in London, Ont; he states that the results of this experiment are surprising, but that surgeons know that soft contacts will result in thinner corneas. That is why they enforce the rule that no soft contacts must not be worn two weeks before surgery and no hard contacts must not be worn four weeks before. Thin corneas can cause a thin stromal bed which can lead to keratoectasia. All of the patients, no matter their past eye wear, were satisfied with the sharpness, day vision, and night vision. None of the patients suffered from dryness, blurriness, haloes, ghosting, or double vision.

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