liana al-labadi, o.d.. optometric terms astigmatism : a condition in which the cornea's...

Liana Al-Labadi, O.D.

Optometric terms

Astigmatism : A condition in which the cornea's curvature is asymmetrical (the

eye is shaped like a football or egg instead of a baseball); light rays are focused at two points on the retina rather than one, resulting in blurred vision. Additional symptoms include distorted vision, eyestrain, shadows on letters, squinting and double vision

Anisometropia : A condition where the eyes have a significantly different

refractive power from each other, so the prescription required for good vision will be different for each eye.

Amblyopia - Also called lazy eye. Undeveloped central vision in one eye that leads to the use of

the other eye as the dominant eye. Strabismus is the leading cause, followed by anisometropia.

There are no symptoms. The patient may be found squinting and closing one eye to see; there may be unrecognized blurred vision in one eye and vision loss.

http://www.opted.org/files/public/Eyes_Have_it_Career_Guide_-_FINAL_02_10.pdf

Optometric terms Refraction:

The test performed during an eye exam to determine the eyeglass lens powers needed for optimum visual acuity.

An automated refraction uses an instrument that does not require the patient to respond.

A manifest refraction is the manual way to determine the best lenses, by placing various lenses in front of the patient's eyes and asking, "Which is better, lens 1 or lens 2?“

Strabismus : A misalignment of the eyes

The eyes don't point at the same object together. Crossed eyes (esotropia) are one type of strabismus; "wall-eyes" (exotropia) are another.

The exact cause is unknown, but appears to be a problem with the eye muscles.

Strabismus can affect depth perception.


Optometric terms

Prescription lenses : Lenses that provide vision correction as

prescribed by an eye care practitioner. Best corrected visual acuity (BCVA):

The best vision you can achieve with correction (such as glasses), as measured on the standard Snellen eye chart.

For example, if your uncorrected eyesight is 6/60, but you can see 6/6 with glasses, your BCVA is 6/6

Optometric terms Diopter:

Unit of measure for the refractive (light-bending) power of a lens

eye care practitioners use it in eyeglass and contact lens prescriptions

A negative number refers to nearsightedness; a positive number, farsightedness. For example, someone with -8.00 diopter lenses

is very nearsighted, while someone with +0.75 diopter lenses is only slightly farsighted.

Phakic: An eye that still has its natural lens. When an eye is aphakic, usually the lens has

been removed during cataract or other eye surgery.

Optometric terms

Cataract: Clouding of the natural lens of the eye Usually caused by:

Aging – most likely cause Other risk factors:

Exposure to the sun's UV rays Smoking Steroid intake Diabetes.

Symptoms include blurred vision, glare, halos around lights, colors that are less bright, a cloudy spot in your vision and, sometimes, temporary vision improvement.

Intraocular lens (IOL) Artificial lens that a cataract surgeon places in a patient's eye

after removing the eye's natural lens. Like a contact lens, it has a built-in refractive power tailored

specifically to the patient's visual condition.


Optometric terms

Low vision Also called partial sight. Sight that cannot be satisfactorily corrected with

glasses, contacts, or surgery. Low vision usually results from an eye disease such as

glaucoma or macular degeneration.

Age-related macular degeneration (AMD) Disorder characterized by changes in the eye's

macula that result in the gradual loss of central vision. The exact cause is unknown, but appears to be

related to a genetic predisposition, smoking and several other risk factors.

Central vision may be blurred, distorted or shadowy before vision loss occurs.


Optometric terms

Intraocular pressure (IOP): Eye pressure, as determined by the amount of

aqueous humor filling it. High IOP (ocular hypertension) can be a sign of

glaucoma

Diabetic retinopathy Leaking of retinal blood vessels in advanced or

long-term diabetes, affecting the macula or retina. Most people have no symptoms at first, but can

develop blurred near vision, double vision, floaters, and retinal/vitreous hemorrhages.

In later stages, you can also suffer vision loss.

Optometry Faculty

In responding to the needs of the Palestinian people, An-Najah National University added the Faculty of Optometry to it 19 existing Faculties in 2004

Today the Faculty has 90 students

It is the only Faculty of Optometry in Palestine and is a full member at the World ld Council of Optometry

Optometry Faculty

http://www.najah.edu/page/626

Program Goals Goals:

Offer a professional scientific education in Optometry for the students of Palestine.

Offer a scientific and educational environment for researchers in Optometry.

Offer a base to develop academic and professional experiences in Optometry.

Offer medical treatment to patients in Palestine.

Improve a professional and academic level of workers in the field of Optometry.

Advisory Plan

At the end of the program, the students will receive a Bachelor of Science Degree in Optometry

Graduation requirements for the BSc. Degree in optometry: The students have to complete 159

credit hours distributed as follows: 20 credit hours compulsory elective

courses 6 University credit hours elective courses 133 credit hours Faculty requirements


Advisory Plan


Academic Staff Dean:

Dr. Anwar Dudin Dean of the Medical School

Assistant Professors: Dr. Khereyah Fakhri Ebraheem Al-kharoof

PHD in Vision Science from UK She now serves as the President Assistant

for International Affairs Dr. Liana Mohammed Abdulllah Labadi

Doctor of Optometry Dr. Mazen Mohammad Ali Mahfooth

Khowaira Doctor of Medicine- Ophthalmology Medical degree from Al-Quds University;

Residency from Jordan University

Academic Staff Visiting Professors:

Professor Adel Khudarieh Bachelor of Optometry degree from UK

New Professors: Dr. Mohammad Shehadeh

Doctor of Medicine- Ophthalmology Medical degree from Al-Quds University;

Residency from Jordan University Dr. Mohammad Aqawi

Doctor of Medicine- Ophthalmology Medical degree from Al-Quds University;

Residency from Jordan University

Optometric terms

Accommodation : Eye's ability to automatically change focus from

seeing at one distance to seeing at another. Binocular vision:

Ability of both eyes to work together to achieve proper focus, depth perception and range of vision

Diplopia: Also called double vision. When two images of the same object are perceived

by one or both eyes. i.e. when someone sees two instead of one


Optometric terms Single vision:

A lens that has the same power throughout the entire lens, in contrast to a bifocal or multifocal lens that has more than one lens power.

Reading glasses : Also called readers. Glasses to help with close work, particularly for people who are presbyopic

Multifocal: Type of spectacle lens, IOL, or contact lens design that includes more than one area

through which the eye focuses. Examples are bifocals or trifocals. This enables sight at multiple distances, typically for people with presbyopia

Bifocal: Lens with one segment for near vision and one segment for far vision. Can apply to both spectacle lenses and contact lenses

Progressive lenses : Also called progressive addition lenses or PALs. Multifocal lenses whose corrective powers change progressively throughout the lens. A wearer looks through one portion of the lens for distance vision, another for

intermediate vision, and a third portion for reading or close work. Each area is blended invisibly into the next, without the lines that traditional bifocals

Trifocal: Similar to PALs but with visible lines on the glasses


Optometric terms

Peripheral vision: The edges of your visual field.

Refractive surgery: Surgery that corrects visual acuity, with the objective of reducing or eliminating the

need for glasses and contacts. Includes radial keratotomy, PRK, LASIK, and corneal implants.

Soft contact lenses : Contacts made of gel-like plastic containing varying amounts of water.

RGP (Rigid Gas Permeable): Type of contact lens made of breathable plastic that is custom-fit to the shape of the

cornea. RGPs are the successor to old-fashioned hard lenses, which are now virtually obsolete.

Toric: A lens design with two different optical powers at right angles to each other for the

correction of astigmatism.


liana al-labadi, o.d.. optometric terms astigmatism : a condition in which the cornea's...

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