散光

散光	sǎn guāng	astigmatism
散光	sàn guāng	to diffuse light
散	sàn	variant of 散
散	sǎn	scattered / loose / to come loose / to fall apart / leisurely / powdered medicine
散	sàn	to scatter / to break up (a meeting etc) / to disperse / to disseminate / to dispel / (coll.) to sack
光	guāng	light; ray (CL:道) / bright; shiny / only; merely / used up; finished / to leave (a part of the body) uncovered