Comparison between OPD-scan results and contrast sensitivity of three intraocular lenses: spheric AcrySof SN60AT, aspheric AcrySof SN60WF and multifocal AcrySof Restor lens

Abstract

Purpose: Compare the OPD-scan results and the contrast sensitivity in patients who had implantation of the AcrySof SN60D3 multifocal IOL, the AcrySof SA60AT spheric monofocal IOL and the AcrySof SN60AT aspheric monofocal IOL. Methods: Thirty-two eyes received the multifocal IOL, 32 eyes received the spheric monofocal IOL and 32 eyes received the aspheric monofocal IOL. They were closely paired in age, sex, pre-operative wavefront analysis and contrast sensitivity. All patients was tested with the OPD-scan aberrometer, ETDRS chart at 100% and 9% contrasts and contrast sensitivity. Results: Statistically significant differences were detected more total aberration in SN60AT group (KW = 9.42; p=0.009) when compared to SN60D3 group (p=0.016) and SN60WF group (p=0.0047). The SN60AT group (KW = 16.20; p=0.0003) showed with high spherical aberration values compared to the SN60WF (p=0.00046) and SN60D3 (p=0.0014) group. No significant differences were found between groups in fardistance VA measured using ETDRS at 100% and 9% contrast. The SN60D3 group compared to SN60AT group (p=0.016) had low contrast sensitivity (log units) with statistical difference in 6.0 cpd (KW = 7.84; p=0.0199), but no statistical difference between SN60WF and SN60AT group (p=0.91) and SN60WF and SN60D3 group (p=0.051). The SN60D3 group had low contrast sensitivity performed under mesopic conditions (KW = 10.79; p=0,0045) in 6cpd spatial frequency compared to the SN60AT group (p=0.011) and to the SN60WF group (p=0.007) with statistical significant differences. Conclusion: In all analyzed parameters of OPD-scan aberrometry the aspheric and the multifocal IOLs provided less total and spherical aberrations than spheric IOLs. All IOLs provided an excellent high and low contrasts vision, the multifocal IOL was as good as the spheric and aspheric monofocal IOLs.

Comparative study on optical performance and visual outcomes between two diffractive multifocal lenses: AMO Tecnis® ZMB00 and AcrySof® IQ ReSTOR® Multifocal IOL SN6AD1

“…Nevertheless, it is understood that the same difficulty in measurement was imposed upon both groups, making comparisons reasonable. Hida et al compared the ZM900 and SN60D3 lenses and found similar aberrometric results, as did Nakano et al (10,27) . Moreno et al evaluated a system for analyzing the wavefront of a double-passage Optical Quality Analysis System (Visiometrics, S.L., Cerdanyola, BCN, Spain) that could differentiate the two wavefronts and thereby assess the optical quality more accurately for better differentiation (29) .…”

“…Considering CS, ZA9003 IOL has been considered better than the ZMA00 IOL (10,22,23) . Nakano et al and Vingolo et al concluded the same by comparing SN60WF and SA60AT IOLs with SN60D3 and ZM900 IOLs (27,28) . This phenomenon could be explained through the analysis of the concept of multifocality promoted by these kind of lenses by splitting light energy into two foci and overlapping near and far images.…”

Facoemulsificação versus extração extracapsular no sistema público de saúde: análise de custos para o hospital, para o governo e para a sociedade

“…Segundo dados do Ministério da Saúde, em 2002, foram realizadas, no Sistema Único de Saúde (SUS), aproximadamente 300.000 cirurgias de catarata. Após esse período, impulsionado por benefícios clínicos relacionados a novas tecnologias dos facoemulsificadores (3) e das lentes intraoculares (LIOs) (4)(5)(6)(7)(8) , e por uma maior segurança cirúrgica (9)(10)(11)(12) , houve um aumento no número …”