نتایج جستجو برای: phototherapeutic keratectomy

تعداد نتایج: 1760  

Journal: :Journal of refractive surgery 2001
Y C Lee I J Wang F R Hu W W Kao

PURPOSE Subepithelial haze is a frequent complication and is often the cause of regression after photorefractive keratectomy (PRK). The lack of understanding of this undesirable complication following PRK is in part due to the limited availability of suitable tissues for pathological studies. METHODS We examined the expression of various extracellular components in the cornea of a 46-year-old...

2012
Mohammad A Rashad

PURPOSE This study aimed to evaluate the effectiveness of phototherapeutic keratectomy (PTK) as an alternative treatment to keratoplasty using the Pentacam to assess depth of dense opacities. METHODOLOGY PTK was performed in eleven eyes of ten patients with superficial corneal opacities after assessment by Scheimpflug images of the Pentacam for central corneal thickness (CCT) and opacity leve...

Journal: :Cornea 2008
Namrata Sharma Gaurav Prakash Rajesh Sinha Radhika Tandon Jeewan S Titiyal Rasik B Vajpayee

PURPOSE To analyze the indications and outcomes of phototherapeutic keratectomy (PTK) in the developing world. METHODS In this retrospective study, the records of 203 consecutive eyes of 191 patients who had undergone PTK at a tertiary eye care center were evaluated. The parameters assessed were indications of PTK, demographic features, best spectacle-corrected visual acuity (BSCVA), and pach...

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