Farnsworth-Munsell 100 Hue Color Test
14. Name two types of colour vision tests 2 marks
The two types of colour tests are Ishihara colour test plates and Farnsworth Lantern dichotomous test and Farnsworth-Munsell 100 hue colour test.
15. What are the referral protocols and procedures for Optical Dispensers? 3 marks
Optical dispensers do not refer in the medical sense, however there will be times where be times when a n optical dispenser will see an individual with an eye injury or eye condition. The dispenser is not permitted to diagnose, attempt to treat or advise on treatment. However they should be able to distinguish the difference between an urgent emergency or a condition is urgent but an appointment can be made at a later time. If the situation is urgent such as a trauma, and ambulance should be called. If there is an ophthalmologist near by they should be notified as well as the optometrist if on site. …show more content…
The crystalline lens is a complex structure of very fine fibres with delicately balanced chemistry of proteins, water and a small portion consisting of minerals. However if this balance is upset the lens can begin to become opaque. This can result from excess water in the lens, disturbance in the arrangement of the fibres, interference with the proteins in the lens and deposits of calcium compound and other substances thus resulting in a cataract. There are several types of cataracts and several different types. Cataracts can be congenital, acquired, traumatic or senile. Congenital cataracts are there from birth and until they are removed the child is blind. Diseases such as diabetes or exposure to radiation however often cause acquired cataracts. However traumatic cataracts are caused by a blow to the eye that sends a shockwave through the media of the eye causing tissue damage and tears in the material. Senile cataracts are found universally in many people over the age of 80 and are a part of the aging
The two types of colour tests are Ishihara colour test plates and Farnsworth Lantern dichotomous test and Farnsworth-Munsell 100 hue colour test.
15. What are the referral protocols and procedures for Optical Dispensers? 3 marks
Optical dispensers do not refer in the medical sense, however there will be times where be times when a n optical dispenser will see an individual with an eye injury or eye condition. The dispenser is not permitted to diagnose, attempt to treat or advise on treatment. However they should be able to distinguish the difference between an urgent emergency or a condition is urgent but an appointment can be made at a later time. If the situation is urgent such as a trauma, and ambulance should be called. If there is an ophthalmologist near by they should be notified as well as the optometrist if on site. …show more content…
The crystalline lens is a complex structure of very fine fibres with delicately balanced chemistry of proteins, water and a small portion consisting of minerals. However if this balance is upset the lens can begin to become opaque. This can result from excess water in the lens, disturbance in the arrangement of the fibres, interference with the proteins in the lens and deposits of calcium compound and other substances thus resulting in a cataract. There are several types of cataracts and several different types. Cataracts can be congenital, acquired, traumatic or senile. Congenital cataracts are there from birth and until they are removed the child is blind. Diseases such as diabetes or exposure to radiation however often cause acquired cataracts. However traumatic cataracts are caused by a blow to the eye that sends a shockwave through the media of the eye causing tissue damage and tears in the material. Senile cataracts are found universally in many people over the age of 80 and are a part of the aging