Eyes, Beautiful eyes !! - கண்களும் கவி பாடுதே

 Before you read this post, do you perceive what this is ??

கண்களும் கவி பாடுதே கண்ணே உன்

கண்களும் கவி பாடுதே உன்னாசையால்

காலமெல்லாம் இன்ப காதல் மேவும் நீதியோடு – உன்

கண்களும் கவி பாடுதே 

-  இந்தோள ராகத்தில் அமைந்த மிக அற்புதமான  போட்டிப் பாடலை -  சீர்காழி கோவிந்தராஜன், திருச்சி லோகநாதன் குரல்களில் கேட்டு ரசித்து இருப்பீர்கள்.  ‘அடுத்த வீட்டுப் பெண்’ (1960) படத்தில் அமைந்த இந்த படத்தின் நாயகி அஞ்சலிதேவியின் கணவர் ஆதிநாராயணராவ்தான் இசையமைப்பாளர்.  ஸ்வரங்கள், ஆலாபனை என இந்தோள ராகத்தின் சாரத்தைப் பிழிந்து தந்திருப்பார்கள் பாடகர்களும் இசையமைப்பாளரும்.  சினிமா கதை அல்ல இந்த பதிவு ! - கண்கள் பற்றியது ! - உங்கள் கண்களால் எவ்வளவு விஷயங்களை ஒரே சமயத்தில் காணமுடியும் ??  

The field of view (FOV) is the extent of the observable world that is seen at any given moment. In the case of optical instruments or sensors it is a solid angle through which a detector is sensitive to electromagnetic radiation. In the context of human and primate vision, the term "field of view" is typically only used in the sense of a restriction to what is visible by external apparatus, like when wearing spectacles  or virtual reality goggles. Though  eye movements are allowed in the definition. They  do not change the field of view when understood this way.  

Eyes  are the most important  organs of human body that provides vision. They provide beauty to the face, more importantly  make us see beautiful things.  They provide living organisms with vision, the ability to receive and process visual detail, as well as enabling several photo response functions that are independent of vision. Eyes detect light and convert it into electro-chemical impulses in neurons.   Eye is a wonder object, slightly asymmetrical globe, about an inch in diameter. The front part  includes:  Iris, Cornea, Pupil, Sclera, Conjunctiva, .. .. and all these work together to give us the vision that we see !!    The  brain through a lengthy process  turns the signals into the images you see. .. . and eyes need tears to work correctly !!  

Lens is a clear crystalline structure in the eye. It helps in focusing images on retina. Any changes causing denaturation of lens proteins makes it opaque thus blocking visual pathway and leads to blurred vision.  Some of the symptoms could be :  Cloudy/milky/foggy/blurry vision; Poor night vision; Seeing a halo (glare) around lights especially when looking at headlights in the night; double vision and a feeling of improper vision !!   

When proteins present in the eye form clumps, it muddles the vision with a cloudy, hazy outline. It gradually develops and starts interfering with your vision and unless treated could lead to total blindness. This medical condition is often called Cataract.  The word “cataract” is derived from the Greek word katarraktes which loosely translates to waterfall. It was believed that a congealed fluid from the brain had flowed in front of the lens of the eyes. Today, eye cataract is defined as the clouding of the lens of your eyes. 

Cataract : (Noun) means :

1 : a clouding of the lens of the eye or of its surrounding transparent membrane that obstructs the passage of light

2 :  waterfall; especially : a large one over a precipice 

A cataract is an eye disease in which the normally clear lens of the eye becomes cloudy or opaque, causing a decrease in vision. The lens focuses light onto the back of the eye (the retina) so images appear clear and without distortion. The clouding of this lens during cataract formation distorts vision. Cataracts are usually a very gradual process of normal aging but can occasionally develop rapidly. 

 

Here are some photos of eyes taken by me !:

 

Giraffe

Cat

Squirrel

Gorilla

Crow

Calf

Parrot

Maadu - cow

Pigeon

Rhino

Tiger 

Eyes are extremely sensitive and a surgery in the eyes is most feared yet the modern technology has ensured that Eye cataract surgery today is more of a daycare / outpatient procedure – Surgeon skillfully removes the clouded lens, replaces them with artificial lens and the person just walks out of the bed !!  

               A few decades ago, this was a big procedure, as there would incision and patients would be advised on many things including how to sleep and avoiding oil bath etc.,  now a days,  it is done with laser, minimally invasive, small incision surgery – that has changed the way of cataract surgery.   

Phacoemulsification is a procedure in which surgeon makes small incisions with help of blade to enter the eye and cataract is removed with the phacoemulsification probe. Surgeon uses ultrasound energy to dissolve cataract. Traditional phacoemulsification procedure is highly skilful surgery, very much dependent upon surgeon’s dexterity, experience and volume of surgeries one has performed.  In laser assisted cataract surgery, an advanced femtosecond laser replaces or assists use of a hand-held surgical tool.  

For more than couple of decades, SYMA has been organizing free Cataract detection camp on every Aug 15 (Independence Day of India) – more than 100 patients get screened – around 25 to 30 people requiring Cataract surgery are taken to  Sri Sankara Eye Hospital, Pammal  and surgery conducted free of any charge. 

Hopefully after Cataract people get full vision back and are able to see things better without the need for spectacles (one may still require a glass for reading or for correction of vision !!) .. .  .. concluding with a close-up photo of the most captivating eyes that exude karunyam – Sri Varadha Raja  Perumal  at Thiruvallikkeni divyadesam.

The photo at the start is that of a Lion undergoing Cataract surgery !! 

 
With regards – S. Sampathkumar
28.9.2023