Wednesday, 19 February 2014 12:42

Eyesight and Military Academies

The existence of a refractive abnormality was and still is a reason for rejection from Military Academies. Even if the candidate fulfills all requirements to enter such a school, the existence of a refractive fault, even if it is corrected with glasses or contact lenses (visual acuity 10/10), will not allow him to participate in the examinations.

Each of these Military Academies has its own criteria regarding the required visual acuity and in some of them, candidates will be accepted even if they wear glasses or contact lenses, as long as their corrected acuity is not lower than what is required.

In particular, in the table below you can see the visual requirements for the candidates of every Military Academy. It is worth noting that except for the Hellenic Air Force Academy (Pilots), none of the other schools mention restrictions or exclusions due to correction with refractive surgery.

 

Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 6 diopters (spherical equivalent)
Hellenic Military Academy (Arms) Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 4.5 diopters (spherical equivalent)
Hellenic Air Force Academy (Engineers) Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 4.5 diopters (spherical equivalent)

Noncommissioned Officers Army Academy

Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 4.5 diopters (spherical equivalent)

Hellenic Air Force Academy (Technical NCO School)

Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 4.5 diopters (spherical equivalent)

Hellenic Air Force Academy (Administrative NCO School) Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 4.5 diopters (spherical equivalent)
Hellenic Military Academy (Corps) Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 6 diopters (spherical equivalent)

Corps Officers Military Academy

Officers' School of Nursing Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 6 diopters (spherical equivalent)
Naval Cadets Academy (Combatants) Visual acuity with or without correction 10/10 in each eye without correction

Naval Cadets Academy (Engineers)

Visual acuity without correction 1/10 in each eye, 10/10 with correction, myopia should not be above 2.5 diopters, hyperopia 3 diopters and astigmatism 2 diopters. All candidates for naval schools should not have undergone refractive surgery with radial keratotomy
Hellenic Navy's Petty Οfficers' Academy Visual acuity without correction 1/10 in each eye, 10/10 with correction, myopia should not be above 2.5 diopters, hyperopia 3 diopters and astigmatism 2 diopters. All candidates for naval schools should not have undergone refractive surgery with radial keratotomy
Hellenic Air Force Academy (Pilots)

Visual acuity in close or in a distance no less than 10/10 for each eye without correction and they should not have undergone any refractive surgery.
Their myopia should not be higher than 0.25 diopters, hyperopia higher than 1.75 diopters and astigmatism higher than 0.75 diopters for each meridian. Also, esotropia up to 10 diopters, exotropia up to 5 diopters and hypertropia up to 1 diopter and close convergence point no lurther than 70cm.

Hellenic Police Academy Visual acuity with or without correction 10/10 in each eye and refractive anomaly should not be above 4.5 diopters (spherical equivalent). Astigmatism should not exceed 5 diopters.

It is evident that even if visual acuity with correction is adequate, the degrees of refractive abnormality are an obstacle for the participation of the candidates in some schools.

In the past, the only ways to correct these refractive abnormalities were glasses and contact lenses. In some of those schools, however, vision should be perfect without correction. In others, even if corrected visual acuity was 10/10, if the refractive anomaly was above the accepted limit, the candidate was rejected.

The problem of refractive abnormalities can now be surpassed with refractive surgery (LASIK and PRK), which are considered routine surgeries in the hands of an experienced ophthalmologist surgeon. The improvement of laser technology and surgical techniques used today provide painless, safe procedures with excellent, predictable and stable in time results. Refractive surgeries are now undoubtedly an excellent application of advanced technology, which can open the doors of a secure profession to many young people who thought their options limited due to the condition of their eyes, while they were fully qualified for a brilliant career.

Remember: Your ophthalmologist is the best source for responsible answers on issues related to your eyes and their health. Under no circumstances is information taken from our website intended to replace him. Seek your doctor for complete information.

Published in FAQ
Wednesday, 19 February 2014 10:57

Developments in Refractive Surgery

Refractive surgery has brought a revolution in myopia, hyperopia and astigmatism correction. We are already in the third decade of laser use and we can really observe that precision and safety are already here. With the use of this impressive technology, we can forever eliminate our dependence on corrective glasses or contact lenses.

There are two methods of effective correction of high or low degrees of myopia, hyperopia and astigmatism: PRK and LASIK (conventional LASIK, where the creation of the flap is done with a mechanical microkeratome and FEMTO-LASIK, where it is done with a femtosecond laser). The difference between these two methods lies in the fact that, in the first, the correction occurs on the surface of the cornea, while in the second in its interior. In PRK there is some minor discomfort the first 2-3 days, while in LASIK the discomfort is insignificant and eyesight restoration happens almost immediately, on the very first day. The final result is the same in both cases. An important role in the patient's decision to do away with glasses and contact lenses plays the trust and relationship between doctor and patient. The most important part of a refractive surgery is thorough preoperative tests, which will show us if the patient is eligible for a procedure in that particular area. Detailed and thorough preoperative tests ensure the success of the procedure. Timewise, the procedure lasts only a few minutes and it is never longer than 5 or 6 minutes for both eyes. The doctor uses local anesthesia and the patient feels no pain. It is important to note that the correction is permanent and in the very few cases where some degrees of the condition remain, then an additional laser procedure can be done to achieve full correction. The 25 years of laser use allow us to say that the possibility of serious complications is negligible. Even those rare complications can be treated. We are in a position to say with absolute certainty that the chances of infection from contact lenses are more than the possible complications of refractive surgery.

Keratoconus is a non-inflammatory disorder of the cornea, which is characterized by the presence of a progressive deformation of its surface. The cornea gradually takes a “conical” shape (it expands by creating an extrusion), deforming the reflection formed in the fundus of the eye. A progressive thinning can also be observed, as well as scarring, and finally opacity in the area where the cone has formed. Despite ongoing research, the causes of keratoconus are essentially unknown. It is generally considered a genetic disease caused by multiple factors, mainly irregularities in the structure or the metabolism of various segments of the cornea. It used to be considered a rare disorder, perhaps because there weren't any diagnostic means to detect it in the early stages. Today we know that keratoconus is not so rare. There are more than 20,000 people in Greece with keratoconus (approximately 1 for every 2,000 people). It usually appears in adolescence and progresses relatively fast, while later the rhythm of deterioration decreases and stops at around 35 years of age. Physical examination does not always provide evidence for a positive diagnosis. However, keratometry can give altered parameters. The patient presents an irregular progressive astigmatism that previously did not exist. In more advanced stages, the diagnosis is easier and with the help of a slit lamp, the cornea can present the known conical form, as well as thinning and haze of its central area. Nonetheless, positive diagnosis occurs with the help of an electronic device and a test called “corneal map” (corneal topography). In this test, a 2D image of the corneal topography is taken and, based on that, we can diagnose even the subclinical forms (those that haven't presented any symptoms). It is strongly believed today that the riboflavin method can substantially delay or even stop the development of keratoconus, saving the patient from a potential corneal transplant. This method is still evolving and is called C3-R (Corneal Collagen Crosslinking with Riboflavin). Through lab tests and clinical examinations, it has been proven that it reinforces the inner structure of the cornea, stabilizing its architecture and, specifically, strengthening the bonds of the corneal collagen fibers, which are among the basic ingredients for maintaining its structure.

C3-R treatment can be done at the clinic and lasts about 60 minutes. During the treatment, drops of a riboflavin (B2) mix are instilled, which are then activated with UV rays.

Cataract is a haze of the natural lens inside the eye. This lens, which is found behind the iris (the colored part of the eye) is capable of moving and changing shape, so that it can function exactly like the lens of a camera, by focusing bright images on the retina, which, in turn, sends them to your brain. The human lens, consisted mainly of protein and water, can present some haze, in such a degree that the light and images are not allowed to reach the retina. Eye damage, certain disorders or even some medicine can cause this haze. In more than 90% of the cases, however, this haze is cause by the aging process. Cataract isn't a deposition in the eye and cannot be removed with diet or laser. The best way to treat cataract is to remove the old, hazy lens and to replace it with an artificial one. Cataract can be the cause of the blurring of clear images, the dimming of bright colors or a decrease in vision at night. It is also possible that it is the reason why reading or bifocal glasses that used to help you read or perform simple tasks, cannot help you any longer. Unfortunately, it is not feasible to prevent cataract, but only to remove and replace it with an artificial lens which can restore your vision and significantly improve quality of life. The proper time to remove cataract is when the quality of your vision starts causing restrictions in your activities and your enjoyment of life.

Modern technologies, as well as our top-ranking scientific, personnel make us capable of developing pioneering methods to treat even the most demanding eye disorders, like Inflammations, Glaucoma, Age-Related Macular Degeneration, Diabetic and Hypertensive Retinopathy, Retinal Detachment, Strabismus, Optic Neurolopathies etc., even in the most difficult of cases.

George Chronopoulos

Ophthalmologist Surgeon

Published in Publications

 

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