A Prospective Multicenter Trial of Excimer Laser Phototherapeutic Keratectomy for Corneal Vision Los

Diamond burr superficial keratectomy in the treatment of visually-significant anterior corneal lesions

“…Our study suggests that DBSK is a safe and effective surgical treatment for the removal of visually-significant anterior corneal lesions, and its results appear similar to that of excimer laser PTK (3)(4)8) . In addition, DBSK has the benefit of simplicity, low cost, easy availability, and minimal refractive effects.…”

“…Excimer laser phototherapeutic keratectomy (PTK), for instance, is used for the treatment of a variety of superficial corneal disorders, such as recurrent corneal erosions and the removal of anterior corneal opacities (1)(2)(3)(4)(5)(6)(7)(8)(9)(10) . The main drawbacks of PTK are their high cost and the postoperative refractive shifts towards hyperopia (3)(4) . However, superficial treatment of less than 10 µm would not be expected to cause a significant hyperopic shift.…”

Management of band keratopathy with excimer phototherapeutic keratectomy: visual, refractive, and symptomatic outcome

“…However, concurrent ocular pathology was common in this group of eyes, and it was difficult to determine the extent of visual loss attributable to these other factors. Previous studies 4,12 have shown PTK to be less effective in regard to visual outcome for band keratopathy than for some other superficial corneal disorders, mainly because of coexisting ocular disease.…”

“…4,13 Hyperopic shifts may be expected with deeper central ablations, and have been reported to occur in 40-81% of eyes following PTK for various corneal pathologies. [1][2][3][4] O'Brart et al 10 reported a mean hyperopic shift of 1.4 D at 6 months following PTK in 32 eyes treated for visually significant band keratopathy. However, a number of patients may develop a myopic shift postoperatively, the reasons for which are unclear.…”

“…Corneal surface irregularity, epithelial instability, and superficial opacification may all benefit from the procedure. [1][2][3][4][5][6][7][8] Band keratopathy is a relatively common superficial corneal degeneration in which deposition of extracellular granular material throughout the epithelial basement membrane, Bowman's layer, and anterior stroma may result in any combination of these problems. Histological analysis shows that cases may be due to deposition of calcific, noncalcific, or mixed-type materials.…”