نتایج جستجو برای: microkeratome

تعداد نتایج: 237  

Journal: :Investigative ophthalmology & visual science 1984
J R Samples P S Binder E Y Zavala S D Baumgartner J K Deg

The pathology of 14 keratophakia procedures in nine nonhuman primates using various hydrogel lenses as donor lenticles is presented. The lenses were treated as if they were human donor corneas using currently practiced keratophakia procedures. This included microkeratome resection of the recipient cornea, staining of the lenses before cryolathing and, in most instances, lathing according to a m...

Journal: :Journal of refractive surgery 1998
J Güell

The primary goal of refractive surgery is the smallest residual refractive error and preserved contrast sensitivity with the same visual capacity under bright and dim illumination. Corneal refractive surgery cannot correct very high ametopias; from -10 to -14 D is the limit of myopia correction in the cornea and from +4 to +6 D, the limit of hyperopia correction. Intraocular refractive surgery ...

ذبیحی یگانه, حمیدرضا,

          This study was performed to evaluate the efficacy of anterior keratoplasty    with microkeratome in the improvement of visual acuity (V.A) in superficial    corneal disorders in patients admitted to Labbfi Nezhad hospital and Tehran    Bassir Clinic .         &nbs...

Journal: :Journal of cataract and refractive surgery 1999
S MacRae D C Macaluso L F Rich

Numerous etiologies have been suspected to lead to sterile interface keratitis after laser in situ keratomileusis. This tan interface haze with a rippled appearance has been called Sands of the Sahara. We present 2 cases in which red blood cells entered the interface after a small hemorrhage from peripheral corneal vascularization during the microkeratome pass. Although this bleeding was contro...

2007
Jason E Stahl

Greater corneal biomechanical stability has been demonstrated following photorefractive keratectomy (PRK) compared with traditional microkeratome laser-assisted in situ keratomileusis (LASIK). Thin LASIK flaps exhibit biomechanical properties similar to PRK but with the advantage of no haze formation or pain. These findings suggest that thin flaps created with consistent thickness across the co...

Journal: :Archives of ophthalmology 2012
Massimo Busin Vincenzo Scorcia Luca Zambianchi Diego Ponzin

To improve visual and refractive outcomes, microkeratome-assisted lamellar keratoplasty for the treatment of keratoconus (exchange of a 9.0-mm anterior recipient lamella with a 9.0-mm donor lamella, using a 200-μm head for the former and a 300-μm head for the latter) was modified by adding a 6.5-mm incomplete full-thickness incision in the recipient bed before suturing the donor graft in place....

Journal: :Journal of cataract and refractive surgery 2004
Eric D Donnenfeld Michael Ehrenhaus Renée Solomon Jeremy Mazurek Joshua C Rozell Henry D Perry

PURPOSE To investigate the effect of hinge width on corneal sensation and dry-eye syndrome after laser in situ keratomileusis (LASIK). SETTING TLC Laser Eye Center, Garden City, New York, USA. METHODS Fifty-four patients at least 18 years of age had bilateral LASIK with a narrow nasal hinge microkeratome flap in 1 eye and a wider nasal hinge microkeratome flap in the other eye. In all eyes,...

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