Since the early 1980s, civil airmen have been allowed to correct refractive error (i.e., myopia, hyperopia, astigmatism) with corrective surgery. Prior Federal Aviation Administration research studies have shown that the number of civil airmen with refractive surgery continues to increase. A study that reviewed refractive surgery use in civil airmen for the years 1994-96, reported that the larg...

There is less predictability of LASIK treatment in hyperopic eyes than in myopic eyes because with hyperopic eyes there is a higher risk of regression and a greater tendency toward losing corrected distance visual acuity (CDVA) [1-3]. Regression is defined as a return divergence of refraction from the targeted refraction toward the original refractive error mostly occurs 3-6 months after refrac...

The purpose of this case report is to verify if the adaptation a rigid gas-permeable contact lens can improve VA and comfort in patient with complications derived from radial keratotomy (RK) surgery. A semi-scleral was fitted 46-year-old female who had undergone bilateral RK before 30 years. uncorrected distance visual acuity right eye (RE) left (LE) 0.5 0.6 logMAR (minimum angle resolution), r...

PURPOSE A seventh annual survey was carried out by mail in February 1999 to investigate the current trends in cataract and refractive surgery in Japan. METHODS Questionnaires were sent to 925 ophthalmologist members of the Japanese Society of Cataract and Refractive Surgery. Data received from 411 (44.4%) of the recipients were cross-analyzed and compared with those from the previous surveys....

At the time of writing, the most advanced technique of LASIK uses a femtosecond laser for the creation of the flap. This instrument has reduced the complications associated with the creation of the corneal flap to a minumum, with a reduction in the cut depth and a consequent increase in the thickness of the residual stromal bed. The femtosecond laser can therefore be considered to be a major ev...

Case reports of six patients having pre-existing corneal irregularities were prepared. They included patients with keratoconus, hexagonal keratotomy, corneal transplant, LASIK, ABMD and previous penetrating injury. Pre and postoperative refraction and topography were analyzed. All patients received biaspheric IOLs and some received corneal or limbal relaxing incisions at the time of the surgica...