角膜切割激光矯視術(LASIK) @養和醫院 – 手術後分享

2014 年 1月 13 日

決定做矯視手術後，我係1月13日到養和醫院登記和預約手術時間。當日主要接受眼部檢查和電腦角膜掃瞄，一共需時2-2.5 小時，其中有一部分需要使用擴瞳眼藥水，滴左之後約半個鐘後睇近野會比較模糊 (大概持續左5-6 個鐘)。

醫生(張叔銘醫生)話我角膜比正常人薄，好彩自己近視唔算深(左右眼近視約250-300度，散光約200度)。醫生判斷後，認為我適合接受呢個手術，於是我就預約左手術時間(2月13日上午10點，張醫生只在星期一或星期四上午做手術)。

當天總費用: 檢驗費(EXAMINATION FEE) $850 + 電腦角膜掃瞄 (TOPOLYZER) $350 = $1230

2014 年 2月13日

當日我7點就起左身，因為姑娘要求我當日早上9點正去到養和醫院(手術前1小時)，去醫院前最好洗左頭先(因為未來幾日唔洗得頭)，同埋去到養和要量體溫、血壓、食止痛藥、滴麻醉藥等等，之後姑娘帶左我去一個地方坐。

手術過程主要分為兩部分:

第一部分:

1.      滴眼藥水作表面麻醉。

2.      用微形切割器或激光切割器在角膜表面製造角膜瓣。

無記錯手術前一共滴左2次麻醉，製造角膜瓣前醫生會有儀器令到你眨唔倒眼，我唯一要做既就係集中精神望住光環中間既黑色部分，之後有舊野會壓一壓隻眼，唔痛，但有感覺。做完呢PART 眼入面有D氣泡，睇野朦朦地，姑娘帶我番去岩先既地方坐。

約30-45分鐘後，經姑娘檢查發現我雙眼無晒氣泡後，我就繼續接受第二部分既手術:

第二部分:

1.      將角膜瓣掀開,再利用激光於角膜基層上進行打磨。

2.      將角膜瓣回復原位。

一樣，係進行第二部分前姑娘再次為我滴麻醉藥，係網上聽倒人地話掀開角膜瓣同打激光果陣會痛…但我做果時就一D 痛既感覺都無，只係當醫生掀開角膜瓣果時我睇野會突然朦左好多, focus 唔倒，有幾次唔集中唔倒同埋睇唔倒中間既綠燈。打完激光醫生會用幫我清洗傷口，感覺涼涼地，之後佢同我講可以合埋眼，繼續做另外果隻。由掀開角膜瓣到打完激光每隻眼都係需時1分鍾左右(掀開角膜瓣約15-20秒，打磨角膜約15-20 秒，將角膜瓣回復原位和清洗傷口約20-30 秒)

做完之後出去休息左約20分鐘，醫生檢查左一下我對眼，之後姑娘幫我戴一個膠既眼罩(第二日早上先可以除)。當日我話無屋企人接我走，佢地就派人送我落去搭的士。番到屋企之後我訓左8個鐘，夜晚9點先起身，當中並無任何唔舒服，醫院比果3粒止痛藥我都無食到。

*當天約中午12點離開醫院

當天總費用: 視力矯正術(REFRACTIVE SURGERY):$22000


2014年2月14日

2月13號比既費用己包翌日、一週、一個月、 三個月及六個月既覆診費用，當日我照舊9點去到養和覆診，醫生檢查完我雙眼話我傷口康復得比人般人慢，叫我多D休息，之後姑娘帶左我出去，介紹尋日比我既果個藥包，入面有3支眼藥水，仲有8支好細既人工液淚。標籤寫晒幾時開始用同埋幾耐用一次，所以唔需要擔心唔知幾時用邊隻。張醫生既病人一般3星期之後先番黎，但我3月7號果日唔得閒，所以約左3月14號覆診，直接skip 左一星期果次。

藥包同藥水

 人工淚液

每2小時滴一次，開啟後12小時須棄掉。

因為要一直滴人工淚液到下一次覆診，所以當日要買多盒人工淚液。

當天總費用: 人工淚液(MEDICATION) : $120


2014年3月14日

當日按預約時間早上9點去到，姑娘幫我做左個視力測試後再去見醫生。醫生話我康復得幾好，問我眼有無成日好易乾(我無)，佢叫我黎緊呢兩個月繼續滴一隻叫 "FML" 既眼藥水(好似話用黎穩定視力)。當日10 點半就離開養和。

當天總費用: FML眼藥水(2支, 一個月用一支) : $90

2015年2月20
事隔一年，最後一次去養和做medical check for eyes, 呢次只係由視光師幫你量度散光/近視，唔使見醫生。原來自己無近視，但左、右眼各有75同50度散光(有朋友做完一段時間都有番散光)，平時睇野都仲係無問題，希望散光唔好再深:)

[PS]除去面部皺紋教學/Removing Wrinkles

Today we are going to remove the wrinkles of this beautiful lady.

In Layer window, copy the background layer by dragging the layer to the "create new layer" button (as shown below)

Press the button "Edit in Standard Mode" and change the foreground colour to black.

Choose the Brush Tool and a suitable brush size, set the opacity to 100%.

Brush the wrinkles.

After that, press the button  "Edit in Standard Mode" again and you should see something like below.

"Select" > "Inverse"

"Filter" > "Noise" > "Dust & Scratches"

Choose a set of value that looks good in preview.

It looks pretty good now. But if you want to make it looks even better, follow the steps below.

"Select" > "Save Selection"

Click "OK"

"Image" > "Calculation"

Use the setting below.

In the "Channels" window, the newly created channels should be selected, press "Ctrl + C" to copy it.

Press the "RGB" channel and go back to the "Layer" window.

Select the background layer and press "Ctrl + V" to paste the new layer.

Select the pasted layer (layer 1)and set the blending mode to "Overlay".

Hide the copied later (the layer on top) and we should see something like this.

In Layer 1,  "Image" > "Adjustments" > "Invert"

In Layer 1,  "Image" > "Adjustments" > "Levels"

Choose a set of value that looks good in preview.

Make the top layer visible. 

Finish.

[PS]高級去背教學/High Level Removing Background Technique

Today we are going to remove the background of the following photo. 

To begin with, use the Pen Tool to select the majority of the area you want to keep.

No need to make it very precise.

Go to the Paths channel and click the button "Load path as a selection". (Windows > Paths)

 You should see something like this.

Go to "Select" > "Modify" > "Feather" and give it a value "2".

Go back the the layer channel. (Windows > layers)

Copy the selected area and paste it on a new layer.You should see something like this.

(bottom layer is hided for better illustration)  

Go to the "Channels" layer. (Windows > Channels)

 Copy the blue channel.

 Go to "Image" > "Adjustments" > "Invert"

 Go to "Image" > "adjustments" > "Levels"

Change the 3 values below to "0", "1" and "149".

Press "control" on your keyboard and left-click the copied blue channel.

Make all the channels visible except the copied blue one.

Go back to "layer 0"

Copy the selected area and paste it on a new layer (Layer 2 in our case).

Insert a background you want and put it under layer 2.

Go to "Layer" > "Matting" > "Removing White Matte"

Make Layer 1 visible and it is finished

We can see that the effect is quite awesome.