CHEMICAL STRUCTURE AND OPTICAL PROPERTIES OF HYDROPHILIC AND HYDROPHOBIC INTRAOCULAR LENSES

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BEHNAM GHADER A.A.; LATIFI A.; NEGHABAT SHIRAZI R.; SIATIRI H.

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Journal: BINA Year:2011 | Volume:16 | Issue:4 (65) Page(s): 344-351

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Information Journal Paper

Title

CHEMICAL STRUCTURE AND OPTICAL PROPERTIES OF HYDROPHILIC AND HYDROPHOBIC INTRAOCULAR LENSES

Author(s)

BEHNAM GHADER A.A. | LATIFI A. | NEGHABAT SHIRAZI R. | SIATIRI H. | Issue Writer Certificate

Keywords

INTRAOCULAR LENSQ3

OPTICAL PROPERTYQ3

CHEMICAL STRUCTUREQ3

HYDROPHILICQ3

HYDROPHOBICQ3

Abstract

Purpose: To compare the optical properties of HYDROPHILIC and HYDROPHOBIC INTRAOCULAR LENSes (IOLs) containing UV-absorber and to determine their chemical composition.Methods: Optical properties of different foldable HYDROPHILIC and HYDROPHOBIC as well as non-foldable HYDROPHOBIC polymethylmetacrylate (PMMA) IOLs were evaluated in three powers of 15, 22 and 25 diopters. Optical properties were measured using UV-VIS (UV-Visible) spectroscopy between wavelengths 200 and 800 nm and CHEMICAL STRUCTURE characteristics were determined by ATR (attenuated total reflectance) spectroscopy.Results: ATR spectroscopy revealed that foldable HYDROPHILIC and HYDROPHOBIC IOLs and non-foldable HYDROPHOBIC IOLs were respectively composed of hydroxyethylmethacrylate, a copolymer of phenylethylacrylate and phenylethylmethacrylate, and PMMA (in accordance with manufacturer’s claim).Cut-off points of the lenses were found to be around 350-420 nm. Increasing the IOL power from 15 to 22 diopters did not significantly change the cut-off points of foldable HYDROPHOBIC IOLs, however a considerable cut-off shift to higher wavelengths was noted when power increased to 25 diopters. PMMA lenses showed a constant cut-off at 400 nm for all power values.Conclusion: The increase in power is associated with absorption of lower energy UV radiation and shift of cut-off points to higher wavelengths in HYDROPHOBIC IOLs but with no considerable effect on cut-off points in PMMA IOLs.

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APA: Copy

BEHNAM GHADER, A.A., LATIFI, A., NEGHABAT SHIRAZI, R., & SIATIRI, H.. (2011). CHEMICAL STRUCTURE AND OPTICAL PROPERTIES OF HYDROPHILIC AND HYDROPHOBIC INTRAOCULAR LENSES. BINA, 16(4 (65)), 344-351. SID. https://sid.ir/paper/358358/en

Vancouver: Copy

BEHNAM GHADER A.A., LATIFI A., NEGHABAT SHIRAZI R., SIATIRI H.. CHEMICAL STRUCTURE AND OPTICAL PROPERTIES OF HYDROPHILIC AND HYDROPHOBIC INTRAOCULAR LENSES. BINA[Internet]. 2011;16(4 (65)):344-351. Available from: https://sid.ir/paper/358358/en

IEEE: Copy

A.A. BEHNAM GHADER, A. LATIFI, R. NEGHABAT SHIRAZI, and H. SIATIRI, “CHEMICAL STRUCTURE AND OPTICAL PROPERTIES OF HYDROPHILIC AND HYDROPHOBIC INTRAOCULAR LENSES,” BINA, vol. 16, no. 4 (65), pp. 344–351, 2011, [Online]. Available: https://sid.ir/paper/358358/en

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