Revisão sistemática de literatura sobre o exame OPD scan III relacionado com cirurgia de catarata

Abstract

Cataract is a condition caused by the opacification of the crystalline. It is considered to be the principal cause of reversible blindness in the world. The advenced age is one of the principal risk factors of this condition. The treatment of cataract is exclusively surgical, through facectomy, wich is a procedure that replaces de opacified crystalline for a intraocular lens (IOL). The IOL has suffered great tecnological advances, wich resulted in a wide diversity os intraocular lenses, such as convencional, premium, toric and acomodative lenses. Aiming the ideal prescription for each patient, it’s necessary to run a series of tests to analyze the refractive state of the patient’s eye. OPD-Scan III is one of the exams that are fundamental to do the correct analysis, it’s done through the review of the following parameters: placid rings, size of the pupil, Chord Mu, astigmatism, spherical aberrarions and coma. OBJECTIVES: describe the parameters of the OPD-Scan III exam for presciption of IOL, mainly premium IOL, for patients that will be submitted to cataract surgery. METHODOLOGY: This is a sistematic review based on the checklist PRISMA. The search was made on Pubmed, Scielo and Google Academic, with the descriptors: “cataract surgery AND iol AND opd scan III” , “ premium lenses AND cataract” e “OPD-Scan III AND iol”. It was selected articles writted between 2006 and 2022, in languages English and Portuguese, “free full text”and “full text”, at ophthalmologic journals with quails A and B, getting n=18. After complete reading and consenting of both authors was include 8 articles for writing of this study. RESULTS: All analyzed articles (n=8) used the OPD Scan III examination for pre- and post-operative analysis of patients undergoing phacoemulsification with intraocular lens (IOL) implantation for the correction of ametropias. It was observed that 5 articles studied the post-implantation indices of multifocal IOLs, 2 studied the post-surgical outcomes of patients with toric IOLs, and only one analyzed the influence of IOL design and material on patients. The studied ametropias included myopia, astigmatism, and presbyopia. Furthermore, the main changes correlated with OPD Scan III indices were decentralization, tilt, and spherical aberrations. CONCLUSION: As outlined, the OPD Scan III examination is a fundamental tool in the pre- and post-operative evaluation of patients undergoing phacoemulsification surgery, enabling the correct prescription of the most suitable IOL for each case, thus achieving improved visual acuity and complete emmetropia. However, a scarcity of in-depth studies on the topic was noted. Additionally, it is evident that the included studies discussed three main optical ametropias (presbyopia, myopia, and astigmatism), without analyzing other optical dysfunctions. In this context, there is a need to expand studies on the OPD Scan III in intraocular lens prescription to facilitate a more appropriate and accurate prescription of intraocular lenses for each patient.