What is the meaning of "Asheshah"?
Rashi: It is an expression of Ashashis Ayin; it does not see well. It seems to him that he sees via a glass in front of his eyes.
Rashi citing Menachem: It is an expression of decay, like "va'Atzamai Asheshu" (31:11). The same applies to every expression of Ash (Radak - e.g. "Ash Yochlem" - Yeshayah 50:9. This is an exaggeration.)
What is "mi'Ka'as Eini"?
Radak: I cry amidst anger at my enemies who rejoice over my illness.
Why did he say "Eini" (singular)?
Malbim: One eye decayed due to crying over my illness; the other was displaced due to [crying over] all my afflicters; they are harsher to me than the illness.
What is the meaning of "Askah"?
Rashi: [My eye] became old via its diminished sight. Radak - the Targum of "Yashan" (Vayikra 25:22) is Atik.
Rashi citing Menachem: This is like "va'Ya'atek mi'Sham ha'Harah" (Bereishis 12:8). Radak - this is an exaggeration.
Why did he say "b'Chol Tzorerai"?
Rashi: Due to the afflictions that they pain me.
