Showing posts with label contact lenses and glasses. Show all posts
Showing posts with label contact lenses and glasses. Show all posts

Monday, April 1, 2013

Corneal Ulcers: Why Contact Lens Wearers Need Glasses!


What do you think is the biggest risk for really bad infections in contact lens wearers? Give up? The answer is not owning a pair of glasses! That's right, the biggest risk factor for developing a corneal ulcer, as very serious infection, is not having a pair of glasses to wear when your eyes are a little uncomfortable with your contacts, or to give your eyes a break from your contacts.

There are almost 71,000 cases of what eye doctors call ulcerative keratitis each year in the United States. Contact lens wearers are TEN TIMES as likely to get this than non-wearers. There seems to be an increased risk from wearing your contact lenses when you sleep, and wearing contact lenses that you buy from a fashion store is dangerous, too!

Here's a very typical story of how NOT having glasses causes a problem. You have a very high, very strong prescription, and your vision without glasses or contacts is very poor. One of your eyes starts to get red and sore, but you don't have glasses so you just keep wearing your contact lens. Pretty soon...UH OH!...you have a corneal ulcer. Now you CAN'T wear your contacts, but you still don't have a pair of glasses and you're stuck.


Dr. White always says that the first cardinal rule of contact lens wear is to have a back-up pair of glasses, because you never know. Don't let yourself get caught in a bind. Make sure you own a pair of glasses in addition to your contacts!

Monday, January 7, 2013

Do You Know About Your Vision Insurance?



Vision Insurance Overview - Start Your New Year Out Right!

Vision insurance policies typically cover routine eye exams and other procedures, and provide specified dollar amounts or discounts for the purchase of eyeglasses and contact lenses. Some vision insurance policies also offer discounts on refractive surgery, such as LASIK and PRK.

Potentially high costs of routine eye examinations and prescription eyewear can be of real concern, especially for large families. You might be able to defray at least some of these costs by looking into acquiring vision insurance for yourself or better understanding the plan your company already provides.

Vision insurance only supplements regular health insurance. Regular health insurance plans protect you against financial loss due to unexpected eye injury or disease.

Vision insurance, on the other hand, is a wellness benefit designed to reduce your costs for routine, preventive eye care such as eye exams, eyewear and other services.

Where Can I Get Vision Insurance?

Group vision insurance can be obtained through your company, association, school district, etc., or through a government program such as Medicare or Medicaid.  If you are not eligible for a group plan because you are self-employed or for other reasons, most vision insurance providers also offer policies for individuals that you can purchase separately.

Vision insurance often is a value-added benefit linked to indemnity health insurance, health maintenance organizations (HMOs) and preferred provider organizations (PPOs) that have contracted with managed vision care networks to provide eye care services.  Indemnity health insurance is traditional health insurance that allows policyholders access to medical providers of their choice.

An HMO is a group of healthcare providers — doctors, laboratories, hospitals and the like — employed to provide health care to plan members at discounted rates. Usually, plan members are required to access health care (including vision care) only from HMO providers.

A PPO is a network of healthcare providers organized to provide healthcare services to health plan members at a fixed rate below retail prices. Plan members may opt to access out-of-network providers, but usually at a greater cost.

When you buy vision insurance, you receive the following benefits:

Access to a network of providers, including optometrists and ophthalmologists, eyewear stores, optical laboratories and LASIK surgeons

Routine, preventive eye care services at reduced rates

What Kinds of Vision Insurance Plans Are Available?

Vision insurance typically comes in the form of either a vision benefits package or a discount vision plan.

Typically, a vision benefits package provides free eye care services and eyewear within fixed dollar amounts in exchange for an annual premium or membership fee and a relatively small co-pay (fixed dollar amount) each time you access a service.

A discount vision plan, on the other hand, provides eye care and eyewear at discounted rates after you pay an annual premium or membership fee.  In some cases, a vision benefits package or discount vision plan may also include a "deductible" — a fixed dollar amount you must pay your eye care provider out-of-pocket before the insurance benefits take effect.

Both kinds of vision insurance can be custom-designed to meet the requirements of a wide range of customers, including school districts, unions, and big and small companies.

Vision insurance generally covers the following basic services:

Annual eye examinations,  eyeglass frames, eyeglass lenses, contact lenses and discounted rates for LASIK and PRK

Generally, services acquired from network providers cost less than services from out-of-network providers.

Also, a reputable vision insurance company should have a quality assurance mechanism to answer your questions and help you resolve any disputes or issues you have with a vision care provider in your plan's network.


What Does Vision Insurance Cost?

Vision insurance costs vary, depending upon how the program is designed. Costs also may vary based on your state of residence.  As an example, one nationwide vision insurance provider offers the following 2011 rates for individual (non-group) vision insurance plans to New York residents:

Vision Benefits Package

Annual membership: $170.95 for singles; $428.95 for families (includes $10 one-time enrollment fee).   Routine eye exam: covered in full (after $15 co-pay)

Eyeglass lenses — single vision and lined bifocals or trifocals; polycarbonate lenses for children: first pair covered in full (after $25 co-pay)

Eyeglass frames: up to $120 benefit, plus 20 percent off any out-of-pocket expenses (after $25 co-pay)

Contact lenses (instead of glasses): $120 allowance for cost of contact lens exam, fitting and lenses

Other discounts: 20 to 25 percent discounts for eyeglass lens options and extra pairs of glasses (including sunglasses)

Vision Discount Plan

Annual membership: $69.50 for singles; $149.50 for families

Routine eye exam: 20 percent discount,  eyeglass lenses (single vision and lined bifocals):
20 percent discount, eyeglass frames: 25 percent discount, contact lens exam fees: 15 percent discount, laser vision correction: 15 percent, non-prescription sunglasses: 20 percent

It's a good idea to comparison shop several vision insurance providers to make sure you get the best value for the eye care benefits you desire.

Typically, you pay for group vision insurance through payroll deductions or flexible spending accounts (FSAs).  An FSA, sometimes called a cafeteria plan, allows an employee to use pre-tax dollars to purchase selected health benefits such as vision insurance. You save money because you pay for the policy with income that has been set aside for health costs and is not subject to taxation.

If you purchase an individual vision insurance plan because you are self-employed or your employer does not offer vision insurance, you can expect to be billed monthly or annually.

By Madeleine Vessel; additional contributions by Gary Heiting, OD




Wednesday, December 19, 2012

Detection and Treatment of Refractive Errors




Your eye doctor determines the type and degree of refractive error you have by performing a test called a refraction.

This can be be done with a computerized instrument (automated refraction) or with a mechanical instrument called a phoropter that allows your eye doctor to show you one lens at a time (manual refraction).

Often, an automated refraction will be performed by a member of the doctor's staff, and then the eye care practitioner will refine and verify the results with a manual refraction.

An eye care practitioner performs a manual refraction. Your refraction may reveal that you have more than one type of refractive error. For example, your blurred vision may be due to both nearsighted and astigmatism.

Your eye doctor will use the results of your refraction to determine your eyeglasses prescription. A refraction, however, does not provide sufficient information to write a contact lens prescription, which requires a contact lens fitting.

Eyeglass lenses and contact lenses are fabricated with precise curves to refract light to the degree necessary to compensate for refractive errors and bring light to a sharp focus on the retina.

Vision correction surgeries such as LASIK aim to correct refractive errors by changing the shape of the cornea, so that light rays are bent into a more accurate point of focus.

by Gary Heiting, OD



Thursday, April 12, 2012

GET AN EYE EXAM BEFORE YOU GO FOR YOUR DRIVER'S LICENSE RENEWAL

Written By:  Healthy Aging Admin  10-4-2008
Categorized in: Health News

It's your birthday soon and in many states that means your driver's license might be up for renewal.

When was the last time you had an eye exam? Don't be vain or shy. Not knowing if you will pass or not is stressful. Go into your next exam armed with the knowlege that your eye sight is good or that you have taken the corrective measures to make your sight "driving safe".

During driving, the eyes are constantly on the move -- looking at vehicles ahead and to the side;
reading road traffic signs; checking the rear and side view mirrors, and shifting their gaze between external and internal environments in order to check the speedometer, read a map on a global navigation system, change a radio station, or search for a dropped item in the car.

During darkness, these tasks can become more difficult for some drivers. A driver with 20/20 vision during the day can experience a reduction of visual acuity to 20/40 at night.

Research findings from the Pennsylvania Department of Motor Vehicles indicate that over half of those who fail a DMV vision exam are unaware that they have a vision problem. One in four (25 percent) Americans said it has been more than two years since their last eye exam, according to Americans’ Attitudes & Perceptions About Vision Care survey, conducted by Harris Interactive® on behalf of The Vision Care InstituteTM, LLC, a Johnson & Johnson Company.

“Getting behind the wheel of a car with an uncorrected or improperly corrected vision problem can have tragic consequences,” says California-based optometrist Dr. Elise Brisco. “A comprehensive eye exam will include testing to diagnose potential problems and determine the correct form of treatment.”

In the Harris survey, 80 percent of respondents said they believe that correcting vision problems can improve their driving a great deal.

Having a regular eye exam is all part of the Healthy Aging® prevention checklist.

Below are some common vision problems and how they can impact driving.

Distance vision

Poor distance vision and excessive speed can have disastrous results. If your distance vision is poor, you may not see hazards until it's too late to react safely. The faster you travel, the less time you have to see things and react to them.

Depth Perception

You need to be able to judge distances well to pass other vehicles and change lanes, especially in busy traffic. The inability to judge distance can result in the driver stopping too short of the limit line or inside the intersection, turning too wide or too short, and/or failing to maintain speed and/or following distance appropriate for prevailing driving conditions. Poor depth perception also can result in “fender benders” and make parking more difficult.

Accommodation (near vision focusing)

When you're driving, you need to look from the road to the dashboard and back again quite often. This ability to change focus from far to near is called accommodation or near vision focusing. Over the age of 45, most people have increasing difficulty with near vision, and may need bifocal or progressive lenses or contact lenses to help see at all distances from far to near.

Field of vision (peripheral)

In driving, peripheral or side vision is used in part to detect information that may be important for safe driving, such as road signs, appearances of hazards, and changes in the flow of traffic. The ability to see to both sides is important. You need to be able to see cross traffic, pedestrians, and animals at the roadside, without having to look away from the road ahead.

Peripheral vision is also used in controlling the vehicle. When the driver looks in the rear view mirror, peripheral vision is used to monitor traffic in front of the vehicle. In keeping the vehicle centered in the lane, peripheral vision is used to monitor the lane boundaries. Peripheral vision impaired by one or more vision conditions can result in the driver failing to react to a hazard coming from the driver's far left or far right, failing to heed a stop light suspended over an intersection, weaving while negotiating a curve, and/or driving too close to parked cars. Additionally, due to the frame, some eyeglasses also can block peripheral vision so that when looking sideways, upwards or downwards, the wearer is looking outside the perimeter of the lens.

Astigmatism

Astigmatism is a vision condition that occurs when surfaces of the eye, such as the cornea, have an oval shape -- like an egg. This shape prevents light from focusing properly on the back of the eye, the retina. People with uncorrected astigmatism will usually have blurred vision, and in some cases may also experience headaches, eyestrain, or fatigue.

Night vision

The visual ability of two drivers may be about the same during the daylight hours and be markedly different during night or other low-light situations. For example, twilight is one of the most difficult times to drive, because eyes are constantly changing to adapt to the growing darkness.

Drivers need to be able to see in low and variable light conditions, and recover quickly from the glare of oncoming headlights. Glare recovery is best in drivers under the age of 30, and night vision can deteriorate after the age of 40.

Driving safely at night requires seeing well not only under low illumination, it also requires one to see low contrast objects. Someone wearing dark clothes and crossing the street in front of the driver is much harder to detect at night than during the day because there is much less contrast at night between darkly clothed pedestrians and a dark background.

Night vision impaired by one or more vision conditions can result in a driver at night failing to react to hazards located directly in front of the vehicle, tailgating, and/or failing to steer when necessary because the driver is unable to see low contrast features of the roadway such as its edges and irregularities in the road surface.

Color vision

Color plays an important part in road safety. Drivers must instantly recognize traffic lights, indicator signs, hazard warning lights and stoplights, and people with color vision defects may react slower to them.

SOURCES: ACUVUE, Mayo Clinic