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Optometrists at The Mancine Center
Frequently Asked Questions
What is Astigmatism?
An astigmatic eye generally requires two different powers to create a clear image. Without correction, astigmatism causes distortions both at far and near viewing distances.
The correction for astigmatism is a different lens power at a specific location in the lens. It is possible for an astigmatic eye to minimize the blur by accommodating, or focusing to bring the "circle of least confusion" onto the retina.
What is Hyperopia?
Hyperopia is often referred to as "long-sightedness" or "far-sighted". An eye is hyperopic when the far point is at a virtual point behind the eye. Generally the hyperopic eye is too short with respect to the refractive state of the standard eye (i.e. an emmetropic eye or eye requiring no optical correction) or because the optical power of the eye is too low relative to the length of the standard eye.
The focus is correctly adjusted using a "plus" lens power or convex lens.
What is Myopia?
Myopia is often referred to as “short-sightedness” or “near-sighted”. An eye is myopic when the “far point”, a point at which light from an object is focused on the retina, is located at a finite distance in front of the eye.
Myopia can be due to either an eye, which is too long relative to the optical power of the eye (axial myopia), or because the optical power of the eye is too high relative to the length of the standard eye (refractive myopia). The focus is correctly adjusted with a “minus” power lens, or concave lens.
What is Emmetropia?
Emmetropia is just another name for an eye that has no optical defects and a precise image is formed on the retina.
Contact Dr. Angelo Aiello and Dr. Laura Stocksdale based in Delran, New Jersey, if you have any other questions for our optometrist’s office that were not answered above.
Can I store my lenses in tap water?
No. There are a number of micro-organisms, which like feeding on corneal tissue. Storing lenses in water also defeats the purpose of using a disinfecting solution as there is no disinfection occurring. If anything you are exposing your lenses to more potentially dangerous microorganisms.
Solutions required for contact maintenance
In general all contact lenses, whether soft of rigid type, will require a cleaning, disinfecting and rinsing solution. Enzymatic agents (protein remover) may also be required to reduce buildup of protein on the lens surface.