[Comparison of postoperative results after implantation of hydrophilic acrylic or hydrophobic acrylic intraocular lens: data of one-year prospective clinical study].
OBJECTIVE
To evaluate and compare the impact of two sharp-edge optic foldable intraocular lenses (IOLs) of similar design made from different material (hydrophilic acrylic or hydrophobic acrylic) on visual function, anterior and posterior capsule opacification at one-year follow-up after cataract phacoemulsification.


METHODS
Seventy-two eyes of 72 patients scheduled for cataract surgery were included in a prospective clinical study. Two foldable sharp-edge optic posterior chamber acrylic IOLs of similar design were used. Thirty-nine eyes of 39 patients received a single-piece hydrophilic acrylic (PC 511, Ophtec) IOL and 33 eyes of 33 patients - single-piece hydrophobic acrylic (AcrySof, SA60AT, Alcon) IOL. Visual acuity, anterior capsule opacification (ACO), capsulorrhexis/optic overlapping, and posterior capsule opacification (PCO) were evaluated. The intensity of ACO was assessed subjectively. PCO values in the entire IOL optic area and in the central 3-mm optic zone were assessed using a photographic image analysis system (EPCO 2000). The patients were examined at one year postoperatively.


RESULTS
There were no significant differences in best-corrected visual acuity and capsulorrhexis/optic overlapping between IOL types at 1-year follow-up after surgery. In the single-piece hydrophilic acrylic IOL group, the grade of ACO density was significantly higher in capsulorrhexis rim area (1.56+/-0.71 and 1.00+/-0.75) and in the capsule/optic area (1.62+/-0.67 and 1.00+/-0.75) (P<0.05). PCO values of the entire IOL optic area (0.12+/-0.13 and 0.024+/-0.02) as well as in the central 3-mm optic zone (0.06+/-0.11 and 0.001+/-0.003) was significantly higher in the single-piece hydrophilic acrylic IOL group one year postoperatively (P<0.05). In 33.3% of cases of the single-piece hydrophilic acrylic IOL group, contraction of haptics to IOL optics was present one year postoperatively, which was not present in any case of the single-piece hydrophobic acrylic IOL group.


CONCLUSIONS
One-year follow-up after cataract surgery has shown a significant difference in ACO and PCO development comparing single-piece hydrophilic acrylic and single-piece hydrophobic acrylic intraocular lenses. The effect of hydrophobic acrylic foldable lenses on preventing anterior and posterior capsule opacification is mainly a result of the acrylic hydrophobic biomaterial.
Zemaitiene
Reda
R
Department of Eye Diseases, Kaunas University of Medicine, Eiveniu 2, 50009 Kaunas, Lithuania. reda.zemaitiene@kmuk.lt
Speckauskas
Martynas
M
Glebauskiene
Brigita
B
Jasinskas
Vytautas
V
D000180:Acrylic Resins; D000368:Aged; D019923:Capsulorhexis; D003263:Contact Lenses, Hydrophilic; D005500:Follow-Up Studies; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008875:Middle Aged; D018918:Phacoemulsification; D011183:Postoperative Complications; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D014792:Visual Acuity
D000180:Acrylic Resins