OptiCard – Instructional Video
OptiCard – User Manual
For your patients’ Safety, Must Read this Manual before using this device.
If you lose this manual you may read it online by visiting www.tlabs.pk as mentioned on OptiCard.
Fundoscopy with OptiCard may be done with cell phone or without it using naked eyes.
1. SMD type LED – Golden Yellow Light Source with two light intensity modes operated by two different buttons.2. ON/OFF Slide Button for viewing retina/fundus with low intensity light.
3. ON/OFF Push Button for checking red reflex at a distance of
½ meter (approx. half an arm’s length). Push Button delivers more intensity light as compared to Slide Button and hence, it has a momentary action. Push Button is recommended to visualize red reflex only. DO NOT VIEW RETINA/FUNDUS with more intense light delivered by Push Button. Further details are given below.
4. Card is made of fibre glass.
5. 3 Volt Coin Cell CR2032 Lithium Ion based, Non-Rechargeable and Replaceable.
6. Weight: 16 grams with cell inserted.
7. Dimensions: 7cm X 5cm x 0.8cm
8. Aperture Diameter: 0.3cm
For detailed specifications regarding research purposes you may also consult Technical Specs. & Safety Profile Document or contact TLABS in the Contact Us section of T Labs website: www.tlabs.pk
LED turns ON and OFF with the buttons on OptiCard. Slide button keeps LED turned ON for indefinite time until turned OFF, and it delivers low intensity light for examining retina/fundus. While Push button keeps LED turned ON as long it is pressed, once released LED turns off. Light delivered by Push button has more intensity and is recommended for viewing red reflex from a distance of ½ meter-about half an arm’s length. This more intensity light is safer from the mentioned distance as light emitted by LED is diffused and only a portion of it reaches the pupil of the eye. Details regarding Safety Profile are available online in the Technical Specs. & Safety Profile document.
LED is attached to the edge of the card. Below LED, there is an aperture for direct fundoscopy. This aperture is for fundoscopy with naked eyes and has nothing to do with cell phone camera. See Usage instruction video Online after reading this document.
*As with the use of any other diagnostic instrument, correct usage of this device ensures patient safety.
*OptiCard may be used with cell phone camera or retinal examination may be done with naked eye.
Technique to use with naked eye:
Wash your hands.
CHECKING RED REFLEX: Opticard is held at a distance of ½ meter from the patient’s eye and Push Button is pressed while the physician sees through the aperture of OptiCard. Instead of shining light directly towards the eye, illuminate from an angle of 15-20 degrees. A cooperative patient may be asked to look at some object behind the examiner or in case of children light may be shown from an angle of 15 degrees. Red reflex may be observed if present. Now release the Push Button and it turns OFF the LED. There is no need to use mydriatics for viewing Red Reflex.
If OptiCard is held midway between both eyes of a patient, at a distance of around ½ meter while physician’s eyes level with patient’s eye, one may see Red Reflex from both the eyes at a time and detect squint if present (Brückner’s Test). The eye with squint gives a more Red glow.
** Optimum results will be obtained if a room is dark. If this is not possible, then turn patient’s back towards the light source in the room or ask someone to create shade in light path using an object.
** The recommended distance for checking red reflex using cell phone is about 1 meter (100 cm) vs ½ meter (50 cm) without cellphone.
EXAMINING RETINA AND OPTIC DISC: As the Slide Button is moved Up, LED turns ON. Patient’s pupils dilated already with a mydriatic drug are examined through the aperture of OptiCard. Bring the card closer to eye till retinal vessels are visualized and follow them converging to the optic disc. Retina may then be explored.
Review side effects of Mydriatic Agents that you use, such as bradycardia after systemic absorption or even apnoea in case of neonates. Before instilling mydriatics into eyes of neonates keep resuscitation trolley ready.
Technique to use with a cell phone:
Clean your cellphone using spirit swab. Wash your hands.
Upper border of OptiCard with LED on its edge is placed close to the cell phone camera, aligning it to the edge of camera lens. The card may then be secured on the cell phone using sticking tape. See Usage video online after reading this document. Camera is turned on in the cell phone. Cell phone camera may be in photo or video mode. Flash of camera must be turned off. Focus the phone camera to some distant object about 6 feet away.
TO CHECK RED REFLEX, keep cellphone about 1 meter or 100cm (at an arm’s length) away from patient’s eye, zoom the camera little in cellphone and press the Push Button, red reflex may be visualized if present. Release the Push button. Remember, for the sake of getting the best results we recommend that red reflex be checked from 1 meter using cell phone with camera in zoom. This contrasts with ½ meter distance for checking red reflex without cellphone.
TO EXAMINE RETINA AND OPTIC DISC, zoom out the camera. Slide up the knob of Slide Button to turn-ON OptiCard, and direct it towards patient’s pupil bringing it closer to see through the patient’s pupil. Do not zoom at this point. Once fundus/retina is visualized properly, then you can zoom. To use card with a zoomed camera it needs good practice. Retinal vessels may be visualized which may be followed nasally to examine the optic disc. Video or still images may be taken. You may note that your cellphone camera behaves differently in Video making or Photo capturing mode. One of those modes may be superior to the other.
DO NOT LET CONTACT with eye happen.
If the in-built camera software of the phone allows ‘manual focus’ , sharpest images may be taken in myopic or hyper-metropic patients.
With practice , fundus and retina may be explored through un-dilated pupils also.
**If OptiCard is attached to silicone cover of cellphone, the cover may be simply attached/detached from phone without needing to attach and align OptiCard again and again with cellphone camera.
**If your cellphone has multiple cameras, then only one of those cameras takes actual photo while other cameras are to create depth or to control exposure. You may check actual photo capturing camera by placing fingertip on all cameras one by one so as to see when the view gets obscured.
Creating and Managing The Photo/Video Follow-Up:
Photographs and videos of findings may be saved in cellphone and then transferred securely to the confidential storage system of the hospital with patients’ name labels. Or in case of a private patient of a physician, photos may be stored in personal computer or better in storages such as Google Drive to assist in Photo Follow-Up. Google Drive offers 15GB of free space. From cellphone photos may be Shared to Google Drive and saved in a folder named after a patient. Google drive has an option to search the files also.
Instructions to Replace the Cell:
The cell in OptiCard will last for years. It is very tightly located in its holder such that it cannot be pulled out without using tweezers. The method to replace it is illustrated below:
1. Maintain safe distance with patient’s eye. Do not make contact with
the eye of patient. Do not examine for more than 45 seconds in a single go to
give rest to patient’s eye.
2. The device may be kept in wallet ensuring that no contact with
liquids comes across. If it comes in contact with water, immediately remove the
cell from OptiCard and let the device dry under sunshine or an incandescent lamp for 5 minutes or it may be left to air dry in a room for 1 day. Do not place
cell under the lamp. Clean the dampened cell with a piece of cloth and let it
3. Keep the device out of reach of children as it is not a toy. It has
small parts. If a child ingests the cell, immediately consult nearby emergency
4. If any component of OptiCard is detached or loosely attached, please
do not use the card as it might cause trauma to patient’s eye. You may contact
us to assist you in repair. We’ll respond back in time.
5. Do not recharge the cell.
Designed, Invented, Made in Pakistan.
Whenever you need assistance
with the Card or have any query, there is a web-link on card,
simply go there and Contact
us. We shall respond positively, always.
ALL RIGHTS RESERVED.
T Labs Logo, OptiCard, The Manuals and Photographs are property of T Labs Pakistan.
OptiCard is a patent pending device.