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FUNCTIONAL DISPENSING

MADE BY : SWATI PANARAFROM : BHARTIMAIYA COLLEGE OF

OPTOMETRY2nd YEAR 3rd SEMESTER

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• Thousands of people are blinded each year from work-related eye injuries.

• Each demand individual consideration.

• These consideration set the scene for functional dispensing.

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OCCUPATIONAL DISPEN

SING

YOUNG CHILDR

EN DISPENS

ING

SPECIAL PURPOS

E DISPENS

ING

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VOCATIONAL DISPENSING

• Gardener• driver• Sports person• School teacher• Carpenter• Golfer • Executive• Bookkeeper • Musician• dentist • Housewife

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• Receptionist • Laboratory worker• Nurse• Needle woman• Socialist• Computer user• Fisher man• Welder• Army• Shop keeper• Industrial worker• Socialist• theatergoer

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SHOPKEEPER

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• A job with wide variation seeing distance.• Also include bookseller , hosier , grocer.

• Visual demands :• Correction above and below eye level to select

good.

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Options • A trifocal with deep intermediate segment is best.

• A bifocal with top section having intermediate correction and around near segment of 32 or 38 mm.

• Progressive addition lenses

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SCHOOL TEACHER

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School Teacher

• Visual demands :• Needs distance for seeing

students..• Near correction at arms length

is more useful.

• Option :• Reduced reading add and

distance correction• 45 diameter or straight-top

executive bifocal

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Nurse or hospital sister

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• Visual demands:• Distance vision for ward work• Near vision for charging syringe , checking

chart• Intermediate label reading• All 3 ranges operating theatre• All ranges vision are good …..

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Option

• Trifocal • Progressive

addition lenses

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GOLFER

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Visual demands:• Distance vision good for all his shots• Near for making, reading score cards, identifying ball.

Options:• Lens size should be extra large (widest possible angle of

vision).• Small, low reading segment.• Metal frame.

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MUSICIAN

Visual demands:• Need near & intermediate

works to view notes & play instruments.

Options:• Up curve bifocal (smaller

distance segment)• Enhanced near visions.

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Receptionist

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– Visual demands :• Near and Intermediate visual tasks

more rather than distance.– Options :• Executive bifocal• PALs• 3 piece frames• Enhanced near visions

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LABORATORY WORKER

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Laboratory worker

– Visual demands :• Involves close seeing of minute details.

– Options :• Large segment (45mm)executive bifocals.• Double segment executive bifocal.

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Needle worker

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Needle worker

Visual demands:• Fine detail vision is very essential.

Options:• Full reading lenses• Near vision corrected• bifocals

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Carpenter

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Visual demands• Intermediate for drilling, plumb-lining,

planning, turning.• Near vision for drawing, marking up, tool-

setting.

Option:• near correction • Bifocal with rigid clip on• Temple -curl sides

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GARDENER

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• Visual demands:• Needs to inspect plants, pricking, labeling.

• Intermediate task is also necessary like planting out, hoeing, forking….

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Options

• Weak intermediate and near correction.

• Trifocal and PALs are alternative

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HOUSE WIFE

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– Visual demands :• More of near and distance. • Intermediate for polishing, washing, ironing, making

beds.– Options :• Progressive addition lenses• Bifocal having rectangular segments

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SPORTS PERSON

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• For non prescription eyewear : • wraparound frames • & lenses are useful

• Polycarbonate lenses & use strong frames

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• For swimming special swimming goggles are used which are back surface antifogging coated

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• Addidas ready Rx sunglasses are also given

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• For bicycling special small mirror mounted spectacle frames are given.

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• UV protected glasses• Photochromatic lenses

• Contact lenses are also given with approved sports eye protector

• For shooter polarizing lenses are better

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• For bicycling or riding select frame that can be set high on the face with adjustable pads

• For shooters select large aviator frame

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FISHER MAN

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OPTION

• Frame with comfort cable temples.

• UV coated lenses.

• Sunglasses.

• Tinted lenses: depending upon fishing time.

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POLARIZING SPECTACLE

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ARMY OFFICER

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• Refractive correction is given.• Prescription eye wear Solution.

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• A flight helmet

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Night vision glasses

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Welder

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• Refractive correction is given polycarbonate or trivex.

• UV filter goggles.

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• Refractive correction given in polycarbonate or trivex

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• Welding goggles

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• Welding goggles flip-ups

• UV filter goggles

Welding hoods or welding helmets

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THEATREGOER

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• Visual demand : more of distance task then near.

Option : lorgnettes bifocal

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Executive

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Executive

Choice:• PALs are ideal

• Bifocals with very large, straight top segments set high and possibly a special pair of single focus lenses .

• Bifocal with an intermediate correction in the upper part of lens and a large reading segment.

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SOCIALIST

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SOCIALIST

• Visual demands:• Combination between dress & frame.• Option :• PALs • Small segment bifocal.

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INDUSTRIAL WORKER

• Workers in different industries have to face impact hazards, extreme heat, strong chemicals, harmful dust and from radiational energy.

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• Visual purpose– Give full refractive correction

– Polycarbonate lenses or trivex are better option– For worker work in hot climate, frames made from

optyl, kevlar or rubber are better– In chemical factory workers frames from

polyamide is better option

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• For enhancement of vision– UV coated lenses

– Light tint especially – yellow tint is given

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• Facial shields

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– UV filter splash goggles

Wind & dust protected goggles

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– Chemical splash goggles

– UV protective high impact goggles

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BOOK KEEPER

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• Visual demands:• Close range• Refers records and files intermediated.• Option:• Single vision lens for reading.• Large segment bifocal full reading segment.

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DRIVER

• Refractive correction with glasses or plastic lenses.

• Wide range of frame selection

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Options

• If one pair, glasses should have good transmission.

• If two pairs :1. can have polarized lenses that protect against bright

sunlight with refractive correction.2. should have a good transmission level for night driving.

• Bifocal with a low segment.

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• In presbyopic age progressives are the better option

• ARC or UV protected lenses are given

• Photochromatic lenses are better option

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• For day time polarizing lenses are helpful• In night driving special lenses are given

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DENTIST

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Visual demands :• Clear near vision that is closer than his normal reading

distance for his operations so requires a little higher add.• Intermediate for seeing x-ray films, drugs, bottle label. Option: bifocal and clear near correction .

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COMPUTER USER

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Long time work at computer screen give sensation of eye fatigue & blurring vision.

For solution Optical treatmentNon-optical treatment

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optical treatment For visual purpose

Proper distance correction

In patients of presbyopic ageOccupational bifocals

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• Distance correction.• Bifocal lenses• Trifocal • Progressive lenses

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E-D trifocals

occupational progressive lens

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For enhancement of visionAnti reflection coating

Computer glasses with tint is also available in clip-ons

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• Non – optical treatment– Placement of monitor

– Anti-glare filter for– computer screen

– Change lighting conditios

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– Change the screen display

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– Use LCD screens

– Blink more often

– Take frequent breaks

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•THANK YOU