Again this is 'easily' answered :
Explanation of Scripture read by Orthodox Christians - The healing of the paralytic
"Our passions are like blindness or paralysis, because they impair our ability to live a righteous life, and cause us to miss the knowledge of God, as a blind man cannot see and a paralyzed man cannot go where he wants. This connection between the passions and sin and physical afflictions is well known in the mind of the church. This is not to say that sin always CAUSES physical afflictions. This is possible, however, in every case, afflictions are a reminder of our primary affliction and need for God.
Our Lord makes the connection between sin and afflictions repeatedly. In many cases, He forgave a man's sins before he healed him of his physical infirmity, to affect a complete healing and regeneration of the man. In other cases, he healed someone of their physical infirmity first, then later enlightened them concerning Himself (such as in the case of the man born without eyes), or reminded them about sin, which is their major affliction."
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""{1} And as Jesus passed by, he saw a man which was blind from his birth. ... {6} ... He spat on the ground, and made clay of the spittle, and he anointed the eyes of the blind man with the clay, {7} And said unto him, Go, wash in the pool of Siloam, (which is by interpretation, Sent.) He went his way therefore, and washed, and came seeing. ...{35} Jesus heard that they had cast him out; and when he had found him, he said unto him, Dost thou believe on the Son of God? {36} He answered and said, Who is he, Lord, that I might believe on him? {37} And Jesus said unto him, Thou hast both seen him, and it is he that talketh with thee. {38} And he said, Lord, I believe. And he worshipped him. (John 9:1-38, parts)"