What are tinted lenses?
- Tinted Lenses
- Polaroid lenses
- Photochromatic Lenses
- Special Filters
Significance of Tinted Ophthalmic Lens
- To protect the eyes from glare and harmful radiations
- Mainly protective and cosmetic purposes. (Protection / Clarity / Appearance)
- Purposes vary as per variety of tints: solid glass tint, surface coated, dyed tints etc.
- Transmit or block specific wavelength lights
- Absorb or block UV/Infrared lights
- Response to the ambient level of light
- Reduce Surface Reflections(If other coatings are done )
- Enhance contrast
How the tinted lens made?
|Iamge: Techniques Chimiques Nouvelles|
Why tinted ophthalmic lenses prescribed?
- Light sensitivity
- Contrast enhancement
- Reducing migraines
- Reading comfort and performance
- Driving factors.
- Age-related macular degeneration (ARMD)
- Retinitis Pigmentosa (RP)
- Diabetic retinopathy
- Cone dystrophy
- Oculo-cutaneous albinism
|Reducing glare effects by using Tinted Ophthalmic Lens on an Albinism Patient, Image Albinism Matters|
Various Ophthalmic Tints and its element used
- Pink- Cerium or Didimium or Manganese
- Blue- Cobalt
- Green-Ferrous oxide or Chromium
- Yellow- Uranium or Silver
- Red- Gold
- Amber (Sulphur+Iron)
Prescribing Indications for Tinted Lens
- Best all-around tint, not a true colour.
- Neutral density filter
- Absorbs all colors of the spectrum equally
- Ideal for people who do not want relativity of colors affected
- Allows colors to be seen in their natural state relative to one another
- Reduces the light intensities but not remove any particular wavelengths.
Selection of Grey Tints:
- Light sensitive people / Anti-Fatigue
- Intolerant to color distortion
- Night Drivers
- Cool sunglass color
- Indoor use to reduce glare from fluorescent lamps, visual display screen and television screen
- Limitation- not best contrast-enhancing colour, the slight reduction in visual acuity.
- Is an example of unsaturated red
- Mainly given to attenuate the light in a pleasing way
- Sweetest color especially for women
- Cosmetically better as it blends well with the skin tones
Selection of Pink Tints:
- For low light-sensitive individuals
- Good eye cosmesis
- Color of choice in neurological problems(eg Migraine)
- Appreciated for indoor use
- Computer user, TV etc.
- Limitation- poor UV absorption, not suitable for outdoor use
- Transmit more dangerous high energy part of the spectrum(blue and UV)
- Absorbs light into the yellow-orange wavelengths
- Good for light-sensitive individuals
- A light scattering of blue light will cost more than relief they get from the elimination of peak sensitivity wavelength of yellow and orange.
Indication of Blue Tints
- Indoor tints for eye cosmesis
- Watching computer, TV, overhead projector etc
- Prescription for foundry work, furnace, smelters, boiler tender etc
- For light-sensitive individuals
- Blue eyes and fair-skinned youngsters with large pupils and reading difficulties.
- This tint is trendy and aesthetically pleasing as well which enhances color perception.
- Limitation of Blue tints- older individuals with media opacities( scattering effect)
- Not good UV and IR filter(welding application)
- Contraindicated for outdoor use.
- Pleasing warm cosmetic colour
- Absorbs more blue light scattered by the atmosphere
- Transmission is controlled with high peaks in the blue, green and red region
- Offers better contrast than green or grey
- Good general purpose filter reducing glare and UV absorption.
Indication of Brown Tint Lens
- Good sun protection
- Ideal tint for daytime driving
- A better option in the hazy condition
- Limitation of Brown tint- tends to distort color a little more than other tints.
- It evenly transmits the whole visible spectrum thus allowing color to be perceived in a neutral state which also improves depth perception.
- Focus in the area of the eye with the greatest sensitivity to color in daylight
- Transmits the brilliant green, yellow, orange and red while absorbs blue and violet region
- Good sunglass tint with enhanced contras
- Good intermediate filter to use when grey or yellow does not seem right.
Indication of Green Tints:
- Sunglass color in tropical climates
- Filters UV as well as IR radiations
- Real protection in bright sunlight
- Enhancing contrast and true color perception
- The essence of brown tint
- Reduces the transmission of blue and green wavelengths
- Increase in contrast
- Ideal support for cycling, mountain tours, skiing etc.
- Allows excellent depth perception in low light
- Strongly blocks the transmission of blue and green wavelengths with sharp contrast
- Indication- good for cycling/racing, hunting and skiing, can be helpful for hue discrimination in color deficiency.
- Red tint for protanopes and green for deuteranopes.
- Colour varies from very light straw to deep reddish-brown
- Improves night vision with light-enhancing effect
- Improves VA and depth perception
- Reduces the glare from front headlights
- Absorbs Blue, Violet and UV light (low wavelength)
- Designed as contrast filters
- Concentrates light in the area of spectrum to which the eye is most sensitive
- Better for light insensitive individual
Indication of Yellow Tint Lens
- Pick up the contrast in hazy conditions, eg snow, cloudy and foggy weather
- For shooters and hunters to enhance target definition
- Limitation- distorts color perception.
- The least chosen tint of all
- It is photoactive as ultraviolet
- Can irritate eyes
- Can cause eye damage.
Light sensitivity and Selection of tints
- Choose Grey, Blue or Green tints
- Reject orange and yellow
- Red, Orange, Yellow, Green and Brown
- Tend to allow the transmission of light that is the same as the color of the filter
- Suppress other color
- Absorbs Blue and UV which give background haze.
Tinted Ophthalmic Lenses for Migraine
- Pink or Blue tints- the past experience of migraine
- Less frequently after 1 month of wearing
|Image Google: By TheraSpecs|
- It filters out certain light frequencies
- Blue tint lens can help for reading in learning disabilities
- Increase the rate of reading and maintain good fixations
Driving and selection of tints
- Must not be too dark
- May reduce VA
- Brown tint is ideal for drivers for daytime
- Night driving lenses-Yellow or Amber tints with ARC
- Improves contrast and reduces glare.
- Graduated tint beneficial(dark at the top).
Conditions for selecting tints
Indication of Tinted Lens By Profession
We can also use Tinted lens sunglasses, Always consult with your eye care service providers and get advice from them about which of above mentioned color suit for you according to your overall eye health conditions.