KISA% is associated with-
Ans. is 'a' i.e., Keratoconus * The KISA index is used in cases of keratoconus and is derived using 4 indices:i) Central keratometry Kii) Inferior- Superior keratometry (I-S)iii) Astigmatism Index (AST)* It is calculated using videokeratograph device and it quantifies th degree of corneal astigmatism and the SRAX index which is expression of irregular astigmatism occurring in keratoconus.
Keratoconus
Keratoglobus
Hypermetropia with astigmatism
Terrien's marginal degeneration
Cornea