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Alois K. Dexl, Theresa Rückl, Orang Seyeddain, Wolfgang Riha, Melchior Hohensinn, Wolfgang Hitzl, Günther Grabner; Reading Performance After Implantation Of A Small Aperture Corneal Inlay For The Surgical Correction Of Presbyopia: Two-Year Follow-Up Of 32 Patients. Invest. Ophthalmol. Vis. Sci. 2011;52(14):847.
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To evaluate the effectiveness of the KAMRATM intracorneal inlay - as it effects changes in the parameters of reading performance over a follow-up period of 2 years.
This prospective, non-randomized, non-comparative study comprised 32 naturally emmetropic, presbyopic patients. Bilateral reading acuity, reading distance, reading speed and smallest log-scaled sentence, have been evaluated in a standardized testing procedure using the Salzburg Reading Desk (SRD). Minimal postoperative follow-up was 24 months.
The SRD results showed a significant improvement in each of the parameters tested. After a mean follow up period of 24.2±0.8 months the mean reading distance changed from pre-op 48.1±5.5cm to 38.9±6.3 cm (p <0.001), the reading acuity "at best distance" improved from 0.3±0.14 logRAD to 0.24±0.11 logRAD (p <0.001), and the reading speed increased from 142±13 wpm to 149±17 wpm (p =0.029). One patient lost one line, and in one patient there was no change at all, where as all other patients (30/32) improved up to 6 log-scaled lines, with a mean improvement of 2.7±1.6 lines.
The KAMRATM intracorneal inlay causes an improvement in all tested parameters of reading performance in emmetropic, presbyopic patients, by increasing the depth of field, and it seems to be an effective treatment for presbyopia, over a minimum follow-up period of two years.
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