Causes A conduction defect in one optic nerve causes the afferent pupillary defect, but it does not account for unequal pupils, which is a separate entity that requires additional explanation if it occurs. The afferent pupillary defect (APD) is seen only in unilateral optic nerve disease.he response to this light reduction is the same as that in the first instance both pupils dilate to an appropriate amount. The afferent pupillary defect (Marcus Gunn pupillary escape phenomenon) depends on the light-reduction response that occurs in the presence of a conduction defect in the optic nerve.
The sun is also getting warmer this time of year, and vacationers who like their weather more than just a little warm may find May to be an appealing option. Typical Weather in May Temperatures in Jamaica during May generally vary between an average high during the day of 86.0 degrees and an average low at night of 75.0 degrees Jamaica in May: Key Facts
See also the US version (Â°F - inches - feet) In Jamaica the climate is tropical, hot all year round, with little difference between winter and summer (just a few degrees). Even in winter, the maximum temperatures are around 27/30 Â°C, and minimum temperatures around 20/23 Â°C.