J Korean Ophthalmol Soc.  2016 Jun;57(6):898-904. 10.3341/jkos.2016.57.6.898.

Clinical Features of Cataract Extraction with Negative-Power Intraocular Lens Implantation in High Myopia

• Kim MK
• Shin WB
• Jeong HK
• Choi JB

• KMID: 2290491
• DOI: http://doi.org/10.3341/jkos.2016.57.6.898

Abstract

PURPOSE
To evaluate the clinical features of high myopic eyes with cataracts implanted with negative power intraocular lenses (IOLs) at the time of cataract surgery.
METHODS
A retrospective chart review was conducted of 18 eyes of 14 patients who underwent cataract surgery with negative power IOLs and 10 eyes in 9 patients with low power IOLs. We investigated axial length, IOL power, preoperative and postoperative best-corrected visual acuity (BCVA) and preoperative and postoperative spherical equivalent (SE) refractive errors.
RESULTS
Mean BCVA showed significant improvement in both groups. We measured postoperative SE refraction and the difference between the mean intended and the mean achieved SE refractive errors in the negative power group (17 eyes) was +1.59 ± 1.34 D and +0.31 ± 0.50 D in the low power group.
CONCLUSIONS
BCVA was significantly improved in the majority of eyes, although they had myopic macular degeneration or posterior staphyloma. However, the mean achieved postoperative SE refraction was more hyperopic than the predicted postoperative SE error. Additionally, hyperopic refractive error was greater in the negative power group than the low power group. Therefore, we recommend that postoperative hyperopic refractive error should be considered when performing cataract surgery in high myopic patients.

Keyword

Cataract; High myopia; Negative power intraocular lens

MeSH Terms

Cataract Extraction*
Cataract*
Humans
Lens Implantation, Intraocular*
Lenses, Intraocular*
Macular Degeneration
Myopia*
Refractive Errors
Retrospective Studies
Visual Acuity

Figure

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  Figure 1. Distribution of the difference between postoperative spherical equivalent (SE) and target refraction. (A) Negative-power group.(B) Low-power group. Postop. = postoperative.

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  Figure 2. Pearson correlation of axial length with (A) the difference between postoperative spherical equivalent (SE) and target refraction (r = 0.560, p = 0.019), (B) intraocular lens (IOL) power (r = −0.559, p = 0.016) in negative-power group. Postop. = postoperative.

• 

  Figure 3. Pearson correlation of axial length with (A) the difference between postoperative spherical equivalent (SE) and target re+fraction (r = 0.508, p = 0.134), (B) intraocular lens (IOL) power (r = −0.578, p = 0.080) in low-power group. Postop. = postoperative.

Reference

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