The epithelial flap is repositioned and a bandage soft contact lens is worn for 3-4 days to minimize discomfort and to protect the epithelium. The method is less invasive than LASIK and appears to give rise to fewer complications. LASEK is an acronym made from the following italic letters 'laser assisted epithelial keratomileusis'. See photorefractive keratectomy; pachometer. Want to thank TFD for its existence?
Stair Tread (Run) Length: 10 Inches Minimum Translated: This means that the horizontal distance from the edge of the stair to the back part where it stops (called the riser) should be at least 10 inches long.
1 Riser-Tread formula: Sometimes the stair parameters will be something like riser plus tread equals 17â18 inches (432â457 mm); another formula is 2 times riser + tread equals 24.6 inches (625 mm), the length of a stride. 2  Thus a 7 inches (178 mm) rise and a 10.6 inches (269 mm) tread exactly meets this code.he following stair measurements are important: 1  The rise height or rise of each step is measured from the top of one tread to the next. 2  It is not the physical height of the riser; the latter excludes the thickness of the tread. 3  A person using the stairs would move this distance vertically for each step taken.