What Happens During A Contact Lens Assessment

Familiarise yourself with the procedures commonly included in a contact lens assessment. Being prepared helps take away anxiousness, so you can have a worry-free trip to your optometrist!

Planning to go for an event or holiday and want to lay off those cumbersome glasses? Have you been considering getting contact lenses to aid your vision? If you’re wondering what really happens during a contact lens exam, you came to the right place. We will be discussing here all the necessary things you need to know in case you’re planning a trip to your eyecare specialist soon.


A contact lens assessment mainly focuses on the health and measurement of the front part of the eye to ensure that optimal fitting of the contact lenses is achieved. It is made specifically for those who want to wear contact lenses instead of eyeglasses. In addition, special tests such as tear film assessment are done to ensure that contact lens usage will be feasible for the wearer.

Here are the common procedures undertaken in a contact lens exam.

  1. a. Asking of lifestyle preferences: Expect your healthcare professional to ask you to share things pertaining to lifestyle preferences and habits. He or she may want to know if you’re a person who likes to move about, into frequent usage of computers, or someone who easily dozes off. These will serve as factors that may affect which type of contact lens and wearing schedule will specifically fit your lifestyle.
  2. b. Vision test: This test is usually done with the Snellen Acuity Chart to determine how well you can see. This eye chart, named after Dutch ophthalmologist Herman Snellen, measures visual acuity. The test is done from a distance of 6 meters, beginning with the largest letter. As you descend lower into the lines, the size of the letters decreases. The optometrist will then record the smallest line that you can see with your right, left, and both eyes.
  3. c. Refraction: This test aim’s to measure a person’s refractive error which includes myopia, hyperopia, astigmatism, and presbyopia. Using a series of eye testing charts and comparing which lenses makes your vision clearer, the optometrist will be able to get an accurate result of your refractive errors. The results will be used to calculate the required degree for your contact lenses so as to achieve clear and comfortable vision when you wear your contact lenses.
  4. d. Front eye health assessment: This assessment allows the optometrist to assess the front part of your eye to ensure that your eye is suitable for lens wear. You will be told to place your chin and forehead in front of a device called the slit lamp. The device will shine a light to the front part of your eye while the optometrist is assessing your eye. During this test, the optometrist may instruct you to look at different positions and also touch your eyelids for a full assessment. This is done to ensure that no complications will arise during contact lens wear.
  5. e. Tear film evaluation: This test is done to make sure that you eyes produce enough tears and that it is stable enough for you to be able to wear contact lenses comfortably. Depending on the severity of dryness, our optometrist will advice you on what measures have to be taken for comfortable contact lens wear. This exam is essential to avoid future eye irritations.
  6. f. Cornea measurement: The curvature of your eye’s clear front surface, the cornea, will also be measured. An instrument called keratometer is used for this exam. It maps out the curvature of your cornea so that your optometrist can accurately choose the proper curve and size of your contact lenses. This ensures that contact lenses do not get stuck onto your eye or moves too much when worn.
  7. g. Prescription: You will then be prescribed with contact lenses that are just right for you. Your optometrist will also discuss how to properly wear it, remove it, and some safety precautions that should be noted while wearing it. During your first attempt with contact lenses, you will be given a trial pair and then a follow-up exam will be done to make sure that you are doing well with your new found vision.
  8. h. Aftercare: During aftercare, the contact lenses prescribed will be assessed to ensure its optimal fitting. The front part of the eye will also be assessed to make sure that your eye is adapting well to the lenses. We recommend you to set an appointment for aftercare session every six months to ensure good fitting of contact lenses and healthy eyes.

Eye exams like these are meticulously done using state-of-the-art facilities for the safety of your prolonged usage of contact lenses. It is best to get one first instead of buying over-the-counter products right away to avoid future damages to your vision.

For accurate contact lens assessment, call 6802 4726 or visit our store at 79 Serangoon Gardenway!