Home
Articles
Q&A

How to fit orthokeratology lenses

Nov 18, 2025 Source: Cainiu Health
Dr. Wang Lei
Introduction
The fitting process for orthokeratology lenses generally includes a comprehensive eye examination, corneal parameter measurement, trial lens evaluation, and final fitting adjustments. First, an overall assessment of the eye is performed, including checks of visual acuity, intraocular pressure, axial length, and corneal curvature. This helps to rule out ocular conditions such as dry eye, keratitis, and glaucoma that may make the patient unsuitable for lens wear, ensuring that the eye meets the necessary criteria for proper fitting.

The fitting process for orthokeratology lenses generally includes a comprehensive eye examination, corneal parameter measurement, trial lens evaluation, fitting adjustment and confirmation, and training on proper usage. A detailed breakdown is as follows:

1. Comprehensive Eye Examination: Begin with an overall assessment of the eyes, checking visual acuity, intraocular pressure, axial length, corneal curvature, and other indicators. This step aims to rule out ocular conditions such as dry eye, keratitis, or glaucoma that may make the patient unsuitable for lens wear, ensuring the eyes meet the necessary criteria for fitting.

2. Corneal Parameter Measurement: Use specialized equipment to precisely measure corneal characteristics, including corneal diameter, corneal topography, and corneal thickness. These parameters are critical for customizing orthokeratology lenses and directly affect lens fit, comfort, and wearing safety.

3. Trial Lens Evaluation: Based on the measured data, select appropriate trial lenses. After the wearer tries them on, use a slit lamp to observe the lens positioning, movement, and coverage on the cornea. Evaluate the fitting performance and determine whether parameter adjustments are needed.

4. Fitting Adjustment and Confirmation: If issues such as lens misalignment, overly tight or loose fit are observed during the trial, adjust the lens parameters accordingly based on the evaluation. Repeat the trial fitting until optimal fit is achieved, ensuring comfort, effective vision correction, and reduced risk of complications.

5. Usage Training and Guidance: After successful fitting, provide detailed instructions to the wearer and their family on how to insert and remove the lenses, daily cleaning and care procedures, as well as common discomfort symptoms during wear and corresponding management strategies, to ensure correct and safe lens use.

Orthokeratology lens fitting should be performed at正规 medical institutions; self-purchasing and use without professional guidance should be avoided. Regular follow-up examinations are required after starting wear to monitor corneal health and lens condition. If symptoms such as eye pain, redness, swelling, or sudden vision decline occur, lens wear should be stopped immediately and medical attention sought.

Related Articles

View All
What causes darkening of the inner thigh?
In general, darkening of the inner thigh may be caused by friction, hormonal changes, tinea cruris (jock itch), eczema, acanthosis nigricans, or other factors. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. In daily life, wear loose-fitting clothing to reduce friction; maintain local cleanliness and dryness, avoiding damp environments; manage body weight and eat a balanced diet; and avoid scratching if itching occurs.
avatar
Dr. Li Feng
View Full Answer
What causes excessive sweating?
In general, excessive sweating may be caused by factors such as hot environments, emotional stress, hyperthyroidism, diabetes, or hyperhidrosis. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. In daily life, choose breathable and loose-fitting clothing, maintain emotional stability, and avoid excessive tension.
avatar
Dr. Li Feng
View Full Answer
What are the symptoms of premature ejaculation?
In general, symptoms of premature ejaculation mainly include rapid ejaculation, poor control, accompanying anxiety, partner dissatisfaction, and decreased quality of sexual life. In daily life, it is recommended to maintain regular exercise, practice pelvic floor muscle contractions, wear loose-fitting underwear, reduce intake of spicy food and alcohol, try the stop-squeeze technique, communicate openly with your partner, jointly establish a comfortable rhythm, gradually extend duration, and rebuild confidence.
avatar
Dr. Cao Zhiqiang
View Full Answer
Can expired medicinal liquor still be consumed?
It is generally not recommended to consume medicinal liquor after its expiration date. When purchasing or making medicinal liquor at home, clearly label the production date and shelf life, and prioritize small-sized packaging to ensure quick consumption. Store in a sealed glass container with a tight-fitting lid, placed in a cool, dark location, avoiding high temperature and humid environments. Regularly check the condition of the medicinal liquor; if cloudiness occurs, do not consume.
avatar
Dr. Sun Lianqing
View Full Answer
What causes a stiff and swollen toe, and what should be done about it?
In general, hard swelling of the toes may be caused by external compression, ill-fitting shoes or socks, gouty arthritis, paronychia, or purulent tenosynovitis. Depending on the specific situation, patients can choose appropriate management approaches such as conservative treatment, medication, or surgical intervention. Swollen and hardened toes should not be ignored; in daily life, it is important to wear properly fitting footwear and avoid trauma or pressure.
avatar
Dr. Li Feng
View Full Answer
What does it mean if there's a hollow small hole inside a callus on the sole of the foot, and what should be done about it?
In general, hollow small holes within calluses on the soles of the feet may be caused by prolonged friction and pressure, dry skin with accumulated keratin, plantar warts, porokeratosis plantaris (pitted keratolysis), athlete's foot, or other reasons. Depending on the specific situation, improvements can be achieved through daily care, medication, surgical treatment, or other methods. It is important to wear properly fitting shoes and socks in daily life, avoid prolonged walking or standing, keep the feet dry, and thoroughly dry the feet after soaking.
avatar
Dr. Liu Wenmin
View Full Answer
What causes a lump to develop at the toe joint, and what should be done about it?
In general, a lump on the toe joint may be caused by factors such as shoe pressure and friction, local hematoma due to trauma, ganglion cyst, gouty arthritis, or infected sebaceous cyst. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve the condition under a doctor's guidance through conservative management, medication, or other treatments. Daily care should include keeping the toes clean and dry and wearing properly fitting shoes.
avatar
Dr. Liu Wenmin
View Full Answer
How to treat the persistent sensation of ants crawling on the soles of the feet
A persistent sensation of ants crawling on the soles may be caused by ill-fitting shoes or socks, excessive fatigue, peripheral neuritis, lumbar disc herniation, diabetic peripheral neuropathy, or other conditions. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve symptoms through general management, medication, or other methods under a doctor's guidance. In daily life, maintain a regular sleep schedule, avoid staying up late, and follow a balanced diet with reduced intake of high-sugar and high-fat foods.
avatar
Dr. Liu Wenmin
View Full Answer
彩牛养生

Your trusted source for health information and wellness guidance.

Quick Links

Resources

Connect

© 2024 HealthPortal. All rights reserved.