CA1 Flashcards
What are the cationic emulsifiers
Benzalkonium chloride o/w
Cetylpyridimium chloride o/w
What are some anionic emulsifiers
Alkaline soap (mg and na stearate)
Alkylsulfonate (na lauryl sulfate)
What are some non ionic emulsifiers
Fatty alcohols
Fatty acids
Glycerol and sorbitan fatty acid ester
Polysorbate
What is the % for same size spheres
52%
What is the % of different size spheres
74%
What are the components of the lacrymal layer
Mucin
Aqueous (philic)
Lipid
What are the layers of the cornea
Stroma (philic)
epithelium
Endothelium
What are the layers of conjunctiva
Lymphatic vessels (philic)
Epithelium
What is the vol of tear fluid
7-10 ml
What is the daily production of tear fluid
0.6-1 ml
What is the ph of the eye
7.1-7.5
What is the viscosity of the eye
2mpa
What is the blood ph
7.2-7.4
What is the viscosity of liphphilic eyedrops
1-1.5 mpa
Wht is the acceptable range for tonicity
225-430 mosmol
What is the range for tonicity for typical
250-300 mosmol
What is the ph for no pain
5.6-10.5
What is the ph for no irritation
7.1-9.7
What is the ph for pain
<5 or >10.5
Which item is affected by temp
Poloxamer 127
What item is affected by ph
Cellulose acetate phthalate
What is affected by ion conc
Gellan gum
What is the cause for anterior blepharitism
Infectious cause : streph aureus or seborrheic
What is the cause of posterior blepharitis
Dysfunction of meibomian gland
