Correct Contact Pdf For Free

A typical contact lens prescription will include the following abbreviations: OD ? This stands for Oculus Dexter, which is Latin for ?right eye?. ... OS ? This stands for Oculus Sinister, which is Latin for ?left eye?. ... OU ? This stands for Oculus Uterque, which is Latin for ?both eyes?.

While squeezing the lens, observe the edges. If the edges of the lens point upward (like a hard-shell taco) or look like they would meet when folded in, then the contact is right side in. If the edges of the contact flare outward toward your thumb and forefinger, then the contact lens is inside out.

A simple rule of thumb exists. For every 0.05mm that the BOZR is steeper than K, the tear lens power increases by +0.25D. Therefore, you must counter this by adding -0.25D to the power of the contact lens.

Don't worry, if you accidentally put a lens on inside out, it won't necessarily damage your eye or the lenses, though the lenses are more likely to fall out. If you put the lens on inside out, you will just feel some discomfort and irritation in that eye.

While squeezing the lens, observe the edges. If the edges of the lens point upward (like a hard-shell taco) or look like they would meet when folded in, then the contact is right side in. If the edges of the contact flare outward toward your thumb and forefinger, then the contact lens is inside out.

Any high quality contact lens laboratory can make a set of these for you ranging from 30.0 D to 45.0 D in one diopter steps. A good general rule of thumb is to use a contact lens base curve that is approximately 95% of the average measured Ks.

Checking Your Eyes It's possible you won't feel as if your contact lens has moved out of place. Still, irritation, redness, or the feeling of something being stuck in your eye are common indicators that your contact lens is stuck in your eye.