Rodrigues PF, Moscovici BK, Hoehne JL, Campos MSDQ, Morandim-Giannetti ADA, Bersanetti PA, Nosé W. Spectrophotometric Analysis of Different Polymethyl Methacrylate Filters and their Importance in the Implantation of Corneal Rings.
Curr Eye Res 2023;
48:731-735. [PMID:
37092541 DOI:
10.1080/02713683.2023.2202365]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/15/2023] [Accepted: 04/09/2023] [Indexed: 04/25/2023]
Abstract
PURPOSE
This study evaluated the luminous behavior applied to materials used in intraocular surgeries.
METHODS
Discs of the different products were delivered in 19.00 mm × 3.00 mm. Each sample was fixed on support keeping it perpendicular to the spectrophotometer beam. Later, their analyses were carried out in the air/PMMA ratio. The graphs of individual profiles of the measurements along the length were constructed according to each of the filters from the spectrophotometric analysis. In addition, descriptive statistics of transmittance and absorbance for each wavelength presented were correlated for each filter.
RESULTS
It is possible to observe that the minimum absorption measure was found in the Red Filter, especially in the blue and green light spectrum.
CONCLUSION
Using filters in PMMA materials appears to improve visual quality in corneal implants, especially the red filter, due to greater absorbance of light leading to fewer light scattering phenomena through corneal rings. However, further studies comparing the effects of different filters on Intracorneal rings should be carried out to elucidate this field of study.
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