Effectiveness of cataract surgery with intraocular lens implantation: a comparative study between extracapsular cataract extraction and phacoemulsification

Introduction : A randomised single blinded clinical trial comparing the effectiveness of two methods of cataract surgery with intraocular lens implantation: extracapsular cataract extraction (ECCE) and phacoemulsification (PEA) was carried out at Universiti Kebangsaan Malaysia Medical Centre (UKMMC) between March 2000 and August 2001. Methodology : The effectiveness of cataract surgery was assessed from the quality of life specifically for vision via Visual Function 14 (VF-14) preoperatively, one week, two months and six months after surgery. Result : The result showed that there was a significant increased in VF-14 scores after a week, two months and six months post-operation compared to the score before surgery for both techniques. However there was no significant difference in VF-14 scores when compared between ECCE and PEA. Conclusion : This study indicated that both techniques give equal benefit to cataract patients. Since effectiveness of cataract surgery with intraocular lens implantation is unrelated to operative procedures, less costly technique should be promoted

Effectiveness of cataract surgery with intraoular lens implantation: a comparative study between extracapsular cataract extraction and phacoemulsification

Background : A randomised single blinded clinical trial comparing the effectiveness of two methods of cataract surgery with intraocular lens implantation: extracapsular cataract extraction (ECCE) and phacoemulsification (PEA) was carried out at Hospital Universiti Kebangsaan Malaysia (HUKM) between March 2000 and August 2001. Methods: The effectiveness of cataract surgery was assessed from the quality of life specifically for vision via Visual Function 14 (VF-14) preoperatively, one week, two months and six months after surgery. Results : The result showed that there was a significant increased in VF-14 scores after a week, two months and six months post-operation compared to the score before surgery for both techniques. However there was no significant difference in VF-14 scores when compared between ECCE and PEA. Conclusions : This study indicated that both techniques give equal benefit to cataract patients. Since effectiveness of cataract surgery with intraocular lens implantation is unrelated to operative procedures, less costly technique should be promoted

Sol-gel based optically active phenolphthalein encapsulated nanomatrices for sensing application

In this work, synthesis and characterization of phenolphthalein-immobilized titania (T-phph) and silica–titania (ST-phph) nanomatrix is reported. The thin films are deposited by sol–gel method at low temperature. The effect of host–guest chemistry in matrices, on the surface structures, optical and sensing activity of the resultant thin films is studied. The phenolphthalein-immobilized fabricated nanoparticles/nanomatrices are analyzed by field emission scanning electron microscope, energy-dispersive X-ray spectroscopy, atomic-force microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, surface analysis, thermogravimetric analysis, and UV–Vis spectroscopy. Thermally stable and high surface area homogeneous nanoparticles, containing nanocrystalline anatase phase with low refractive index (1.58), low roughness (5.5 nm), and high transparency (95 %) are obtained for phenolphthalein-immobilized ST-phph nanomatrix. Moreover, smaller nanoparticles (56–121 nm) with good incorporation of dye and good response of sensing are obtained. The sensor response is optimized at pH 12 with 10.1 pKa value at 555 nm. Graphical Abstract: [Figure not available: see fulltext