1. CONTACTLENSES

2. Coloured SCL are also used in
practice.
The tints used in practice are three
types:
 Prosthetic Tints
 Cosmetic Tints
 Visibility Tints

3.  SCL are usually white and transparent.
 certain tints like the light blue or green
transparent tints are added to improve the
visibility of the lens to the patient during
lens handling procedures.
 These do not affect the eye colour when
worn.

4.  They are used to enhance or change the eye
colour.
 They available in plain and powers.
 They are of two types
 Transparent
 Opaque
The tinted zone of the soft lens covers the iris
colour and changes or enhances it.

5.  These lenses transmit 70 % of the light.
 They are available in various shades.
 The tints is in the form of a concentric ring
which has clear center pupil.

6.  They absorb or reflect all incoming light
,therefore used to completely change or
mask the underlying eye colour .
 They have an iris pattern with a clear
central pupil.
 The clear pupil is typically 5mm in diameter.

7. A prosthetic contact lens is a tinted or
painted contact lens used to improve the
appearance of a disfigured eye or to help
correct the vision of a poorly functioning
eye.

8.  CORNEAL OPACITY AND SCARS

9.  ANIRIDIAS
 IRREGULAR PUPIL
 IRIS COLOBOMA
 ALBINISM
 OCCLUSION THERAPY IN AMBLYOPIA

13.  SCLERAL LENSES
 PMMA or RGP LENSES
 SOFT LENSES

14. ADVANTAGES
 When a corneal lens will not centre on the cornea,
 When one wishes to improve the appearance of the
sclera
 Stable, durable & easy to maintain
DISADVANTAGES
Require greater level of expertise to fit
Expensive

15. INDICATIONS
Disfigured corneas with irregular
astigmatism
Disfigured eyes with moderate to severe
neovascularization
CONTRAINDICATION
Should not be used to mask anomalies that
affect peripheral parts of cornea or large
portions of the eye.

16. INDICATIONS
When a significant proportion of the
anterior eye is disfigured
When the patient is a previous soft
contact lens wearer
When the patient only wants to wear the
lens occasionally

17. Eyes with moderate to advanced
neovascularization
Moderate to extreme dry eye
Irregular astigmatism
People with motor coordination problem

18. TYPE A

22.  MEASURE THE IRIS DIAMETER OF THE FELLOW EYE
AND ORDER IT THE SAME
 NOTE THE IRIS COLOUR AND WHAT TYPE OF TINT IS
REQUIRED
 MEASURE THE DIAMETER OF PUPIL OF THE FELLOW
EYE
 SPECIFY WHETHER A BLACK CLEAR OR TINTED PUPIL
IS REQUIRED
 WHEN REORDERING TINTED LENSES KEEP THE LENS
MATERIAL THE SAME

23. Toxic effects
Corneal oedema
Other problems _almost the same as
faced with standard soft lenses

24. Same as other lenses
Soft solutions can be used