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C. Kim, J.–M. Seo, H. Yu, H. Chung; Surgical Retinal Field of View During Vitreoretinal Surgery in Phakic and Pseudophakic Eyes . Invest. Ophthalmol. Vis. Sci. 2005;46(13):2568.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: Intraocular lenses (IOL) may reduce the surgical field of vitreoretinal surgery because they have smaller optical diameters than the crystalline lens. We investigated the effect of optical diameters of the IOL on surgical field in vitrectomy patients. Methods: Real surgical field was measured with digital photography and ImagePro Plus computer program. Surgical retinal field was also calculated on the basis of fully–dilated pupil size, axial length, refractive power, keratometry, and optical diameters. Real and calculated surgical field were compared, and the effect of optical diameters was analyzed. Capsular opacity in pseudophakic eyes was also quantified. Results: Mean surgical field of phakic eyes was 42.05 ± 5.73mm2 and that of pseudophakic eyes was 28.30 ± 1.88 mm2, which means the decreased surgical field of view by 32.03 ± 4.78 %. Calculated field area correlated well with a real value (p <0.05). Optical diameter was the most important determining factor to the surgical field, thus patients with the smallest IOL showed the least surgical field. Capsular opacity aggravated the field constriction additionally up to 14.02 ± 4.45 %. Conclusions: IOL with small optic diameter decreases surgical field during vitrectomy, and accompanying capsular opacity contributes to additional field constriction in pseudophakic eyes.
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