DIA - Diameter (usually a number between 13 and 15) Brand - The brand/type of contact lens that your doctor has fitted you for.
Does the DIA of a contact matter?
The diameter of a contact lens is the width of the lens from edge to edge. When you wear a contact lens with the appropriate diameter, the lens will remain stable in your eye, i.e. hold its position. If you wear a contact lens with the wrong diameter, it can cause discomfort and may even fall out.
What is the difference between 14.0 and 14.2 diameter contacts?
14.0mm and 14.2mm contacts In fact, there is not much difference between these two. Some manufacturers only make 14.2mm diameter contacts, and some others produce 14.0mm diameter contacts. Many 14.0mm contacts users use 14.5mm or 14.8mm contacts to demonstrate dolly effects on their eyes.
Can I wear contacts with a different diameter?
It is not recommended to wear contact lenses with a different diameter from your prescription. If the diameter is too wide, the lens will be loose in the eye and may slip out of place. If the diameter is too small, the lens will have a tight fit, causing discomfort.
Is 14.2 mm contact lens big?
DIA 14.2mm means the total size of the contact lens is 14.2mm. 14.2mm contacts are considered small size contacts that give a little expansion effect on the eyes. Nowadays, many people are using big size contacts such as 15mm diameter contacts.
How important is diameter in contact lenses?
It's very important because it shows in which part of your eye the edges of the contact lens will rest. If the diameter is wrong, too small or too large it wont be stable on your eye and move around too much or it can be too tight and cause eye irritation and corneal abrasions.31 Aug 2019
What is DIA 14.2 contact lenses?
CONTACT LENS POWER (SPH) RANGE DIAMETER
------------------------- ----------------- --------
Proclear 1 Day Multifocal +6.00 to -10.00 14.2
Proclear 1-Day +8.00 to -12.00 14.2
Proclear Compatibles +20.00 to -20.00 14.2
Proclear Multifocal +6.00 to -8.00 14.4
Is the a big difference between 14.0 and 14.2 diameter contacts?
14.0mm and 14.2mm contacts In fact, there is not much difference between these two. Some manufacturers only make 14.2mm diameter contacts, and some others produce 14.0mm diameter contacts. In other words, the predominant size for the small contacts is between 14.0mm to 14.2mm.
Is there a big difference between 8.4 and 8.6 base curve?
Studies show that a single base curve of 8.4mm managed a “good or better” fit in approximately 90% of individuals,1 and base curves of 8.4mm and 8.6mm together encompassed 98% of individuals.1 Sept 2017
What happens if you wear contacts with the wrong base curve?
If your lenses have the wrong diameter or base curve, you'll likely feel that something is always in your eye. If the lenses are too flat, your eyelids will tend to dislodge them when you blink. The wrong size lenses can even cause an abrasion of your cornea.
Is OD and PD the same?
DUAL PD, or monocular PD, consists of two numbers and is the distance between the centers of each pupil to the bridge of the nose. The first number is always the right eye (OD) measurement, and the second number is the left eye (OS).
What does Dia mean on contact prescription?
Diameter: This stands for Diameter and is the length of the contact lens from one edge of the lens to the other. This is effectively the size of the contact lens and is used to make sure the contact lens covers the correct parts of your eye. E.g. DIA 13.8.31 Mar 2015