Yoga asanas are extremely healing. In fact, each asana has significant health benefits and fixes. There are asanas for the eyes, and every other possible health problem I can think of. It is sometimes a good thing to think of each asana or sequence as a prescription.
Because eye problems can cause discomfort when practicing full inversions...you should always listen to your body no matter what the asana. If you are feeling dizzy, pressure, or lightheadedness for any reason during your practice...slowly rise with a deap breath and rest in either child's pose or corpse. Listen to your body.
Below are specific asanas to help dry eyes. Do not attempt any asana without instruction. I don't know what level of yogi you are...so I will assume you are at a novice level. Therefore, the list will be limited to lower level poses. If you can go futher...reply...and I can give you a list that includes intermediate to guru level asanas.
To practice this...you MUST refer to B.K.S. Iyengar's, "Light on Yoga." He explains in detail a step by step process to do these techniques. I would NOT advise attempting pranayama without following Iyengar'r process verbatim.
Uttanasana Eight, Paschimottanasana, Sanmukhi Mudra Four (also called Parangmukhi Mudra = facing inward), and Savasana are great poses to help your condition.
In addition, it is very beneficial to practice Trataka (gazing with the eyes closed at the tip of the nose for some time andin between the eyebrows for some time).
In addition, you can do a special form of yoga called Pranayama. "Prana means breath, respiration, life, vitality, wind, energy, or strength...the word is generally used in the plural to indicate vital breaths. Ayama means length, expansion, stretching, or restraint. Pranayama thus connotes extension of breath and control. This control is over all the functions of breathing, namely (1) inhalation or inspiration, which is termed puraka (filling up); (2) exhalation or expiration which is called rechaka (emptying the lungs), and (3) retention or holding the breath , a state where there is no inhalation or exhalation, which is termed kumbhaka. Kumbha has 2 states...(1) when breathing is suspended after full inhalation (the lungs being compltetly filled with life-giving air), and (2) when breathing is suspended after full exhalation (the lungs being emptied of all noxious air).
Pranayama is thus the science of breath.
NOTE: PLEASE FOLLOW THIS WARNING...OTHERWISE IT CAN BE EXTREMELY DANGEROUS!!!!
Do NOT practice pranayama before you practice vinyasa or any asana in general. If you do...you must allow an hour to elapse before starting asanas. You may do some pranayama before regular asana practice. If you are exhausted (especially from your asana practice) do NOT do pranayama. Your body should heal for a day. 30 Minutes in not enough time to restore your body. Why? You can pass out!
You CAN practice pranayama AFTER a mild practice of asanas. Stress the word mild. Strenuous asanas cause too much fatigue. In that case...do Ujjayi breathing (the breath you do during normal yoga always) in a reclined position...like corpse pose.
***Pranayama breathing is done through the nose only (only 2 exceptions).
-No strain should be felt in the face, eyes, and ears, or in the neck, shoulders, arms, thighs, and feet.
-Keep the tongue passive. If not..saliva will accumulate in the mouth.
-During inhalation and retention the rib cage should expand both forwards and sideways, but the area between the shoulder-blades and armpits should only expand forwards.
-Before starting pranayama practices, the bowels should be evacuated and the bladder emptied.
-It is preferable to practice on an emty stomach. Wait 6 hours after a meal before practicing pranayama. No JOKE! Keep the eyes closed.
-No pressure should be felt inside the ear.
-After Pranayama...lie down in Savasana for at least 10 minutes in silence.
-*****PERSONS SUFFERING FROM EYE TROUBLE SHOULD NOT ATTEMPT TO HOLD THE BREATH!!!!
The following Pranayama techniques and only these specific techniques are good for your condition. The other Pranayama techniques will actually harm instead of help. So once again...stick to these 2...
(1) Sitali Pranayama....Sitali means cool. This pranaya,a cools the system.
(2) Nadi Sodhana Pranayama...Nadi is a tubular organ of the body for the passage of prana. Sodhana means purifying or cleansing. Therefore...the object of Nadi Sodhana Pranayama is the prurification of the nerves. Once again... do NOT attempt to hold your breath after exchalation. It will cause a bad effect on the eyes.
I hope this information is helpful. Please consult Iyengar's book if you attempt the Pranayama practice. I encourage going for it. It is extremely effective. I have many health issues...and Pranayama combined with my strict asana practice allows me to be in the best shape of my life. If you would like any more information...send me a message and I will be glad to answer any question.