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Jared P. McDonald, Mary Ann A. Croft, Paul L. Kaufman; Effect Of Scleral Buckling (SB) Procedure On Accommodation. Invest. Ophthalmol. Vis. Sci. 2011;52(14):848.
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© ARVO (1962-2015); The Authors (2016-present)
A previous report indicated that a SB procedure may induce myopia (ARVO 2002). Our goal was to determine whether accommodation was increased in human patients following a SB procedure
Eight subjects, ranging in age from 22 to 64 years, were screened post SB surgery. Accommodation was measured in one or both eyes of each subject. Accommodation was induced pharmacologically by giving 2 drops topically of 4% pilocarpine HCl (PILO) with a 10 min interval. Refraction (Hartinger; HCR) was measured before and after PILO at 15 min intervals. Intraocular distances (A- Scan; Model A-5500), and ultrasound biomicroscopy images (Humphrey Model 840) of the anterior and posterior segments were gathered before and after maximum accommodation was achieved. Accommodation was calculated as the difference between pre-PILO and post-PILO refraction.
The SB eye of two subjects accommodated 4-5 diopters above the contralateral control eye (CC) and exceeded values in Duane’s curve for their ages of 38 and 53 years. One subject had a lower accommodative amplitude (1.75 diopters) in the SB eye compared to the CC eye. The five remaining subjects showed no significant increase/decrease in accommodation amplitudes in the SB eye verses their CC eye. The differences in intraocular distances between SB and CC eyes (SB-CC) in all eight subjects averaged together showed that the anterior chamber was deeper (by 0.11±0.01 [s.e.m.] mm), the lens thicker (by 0.15±0.11mm), and the globe length longer (by 0.45±0.22mm), but the differences were not statistically significant. However, further analyses are proceeding to compare pre SB accommodative amplitudes obtained clinically in the ipsilateral eye, surgical techniques and intraocular distances.
The varied accommodative amplitude results following the SB surgical procedure to correct a retinal detachment in these 8 subjects may be due to differences in SB surgical techniques used and changes in intraocular distances.
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